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This chapter describes the function and displays the syntax for interface commands. For more information about defaults and usage guidelines, see the corresponding chapter of the Configuration Fundamentals Command Reference.
Use the access-list global configuration command to establish MAC address access lists. Use the no form of this command to remove a single access list entry.
access-list access-list-number {permit | deny} address mask| access-list-number | Integer from 700 to 799 that you select for the list. |
| permit | Permits the frame. |
| deny | Denies the frame. |
| address mask | 48-bit MAC addresses written in dotted triplet form. The ones bits in the mask argument are the bits to be ignored in the address value. |
Use the access-list global configuration command to build type-code access lists. Use the no form of this command to remove a single access list entry.
access-list access-list-number {permit | deny} type-code wild-mask| access-list-number | User-selectable number between 200 and 299 that identifies the list. |
| permit | Permits the frame. |
| deny | Denies the frame. |
| type-code | 16-bit hexadecimal number written with a leading "0x"; for example, 0x6000. You can specify either an Ethernet type code for Ethernet-encapsulated packets, or a DSAP/SSAP pair for 802.3 or 802.5-encapsulated packets. Ethernet type codes are listed in the appendix "Ethernet Type Codes." |
| wild-mask | 16-bit hexadecimal number whose ones bits correspond to bits in the type-code argument that should be ignored when making a comparison. (A mask for a DSAP/SSAP pair should always be at least 0x0101. This is because these two bits are used for purposes other than identifying the SAP codes.) |
To enable automatic receiver polarity reversal on a hub port connected to an Ethernet interface of a Cisco 2505 or Cisco 2507, use the auto-polarity hub configuration command. To disable this feature, use the no form of this command.
auto-polarityTo set a bandwidth value for an interface, use the bandwidth interface configuration command. Use the no form of this command to restore the default values.
bandwidth kilobits| kilobits | Intended bandwidth in kilobits per second. For a full bandwidth DS3, enter the value 44736. |
To increase the pulse of a signal at the receiver and decrease the pulse from the transmitter using pulse equalization and line build-out for a T1 cable on an AS5200, use the cablelength interface configuration command. To return the pulse equalization and line build-out values to their default settings, use the no form of this command.
cablelength long {dbgain-value dbloss-value}| long | Specifies a long cable length for channel service unit (CSU) connections. |
| dbgain-value | Number of decibels by which the receiver signal is increased. Use the keyword gain26 or gain36 to specify this value. |
| dbloss-value | Number of decibels by which the transmit signal is decreased. Use one of the following keywords to specify this value:
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To configure channelized T1 timeslots with channel associated signaling (also known as robbed bit signaling), which enables an AS5200 modem to answer and send an analog call, use the cas-group controller configuration command. Use the no form of this command to disable channel associated signaling for one or more timeslots.
cas-group channel-number [timeslots range]| channel-number | Specifies a single channel group number. The channel number can be between 0 and 23. |
| timeslots range | (Optional) Specifies a timeslot range of values from 1 to 24. The default value configures 24 timeslots with the channel associated signal called E&M (Ear and Mouth), which is the default signal type. |
Use the channel-group controller configuration command to define the timeslots that belong to each T1 or E1 circuit.
channel-group number timeslots range [speed {48 | 56 | 64}]| number | Channel-group number. When configuring a T1 data line, channel-group numbers can be values from 0 to 23. When configuring an E1 data line, channel-group numbers can be values from 0 to 30. |
| timeslots range | Timeslot or range of timeslots belonging to the channel group. The first timeslot is numbered 1. For a T1 controller, the timeslot range is from 1 to 24. For an E1 controller, the timeslot range is from 1 to 31. |
| speed {48 | 56 | 64} | (Optional) Specifies the line speed (in kilobits per second) of the T1 or E1 link. |
To reboot the LAN Extender chassis and restart its operating software, use the clear controller lex privileged EXEC command.
clear controller lex number [prom]| number | Number of the LAN Extender interface corresponding to the LAN Extender to be rebooted. |
| prom | (Optional) Forces a reload of the PROM image, regardless of any Flash image. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
To clear the interface counters, use the clear counters EXEC command.
clear counters [type number]| type | (Optional) Specifies the interface type. |
| number | (Optional) Specifies the interface counter displayed with the show interfaces command. |
| ethernet | (Optional) If the type is lex, you can clear the interface counters on the Ethernet interface. |
| serial | (Optional) If the type is lex, you can clear the interface counters on the serial interface. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
Use the clear hub EXEC command to reset and reinitialize the hub hardware connected to an interface of a Cisco 2505 or 2507 routers.
clear hub ethernet number| ethernet | Indicates the hub in front of an Ethernet interface. |
| number | Hub number to clear, starting with 0. Since there is currently only one hub, this number is 0. |
Use the clear hub counters EXEC command to set to zero the hub counters on an interface of a Cisco 2505 or 2507 routers.
clear hub counters [ether number [port [end-port]]]| ether | (Optional) Indicates the hub in front of an Ethernet interface. |
| number | (Optional) Hub number for which to clear counters. Since there is currently only one hub, this number is 0. If you specify the keyword ether, you must specify the number. |
| port | (Optional) Port number on the hub. On the Cisco 2505 router, port numbers range from 1 to 8. On the Cisco 2507 router, port numbers range from 1 to 16. If a second port number follows, then this port number indicates the beginning of a port range. If you do not specify a port number, counters for all ports are cleared. |
| end-port | (Optional) Ending port number of a range. |
Use the clear interface EXEC command to reset the hardware logic on an interface.
clear interface type number| type | Specifies the interface type. |
| number | Specifies the port, connector, or interface card number. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| :channel-group | (Optional) On Cisco 7500 series routers supporting channelized T1, specifies the channel from 0 to 23. This number is preceded by a colon. |
| :t1-channel | (Optional) For the CT3IP, the T1 channel is a number between 1 and 28.
T1 channels on the CT3IP are numbered 1 to 28 rather than the more traditional zero-based scheme (0 to 27) used with other Cisco products. This numbering scheme ensures consistency with telco numbering schemes for T1 channels within channelized T3 equipment. |
Use the clear interface fastethernet privileged EXEC command to reset the controller for a specified Fast Ethernet interface.
clear interface fastethernet number (Cisco 4500 and 4700 series routers)Use the clear rif-cache EXEC command to clear entries from the Routing Information Field (RIF) cache.
clear rif-cacheUse the clear service-module serial privileged EXEC configuration command to reset an integrated CSU/DSU.
clear service-module serial number| number | Number of the serial interface. |
Use the clock rate interface configuration command to configure the clock rate for the hardware connections on serial interfaces such as network interface modules (NIMs) and interface processors to an acceptable bit rate. Use the no form of this command to remove the clock rate if you change the interface from a DCE to a DTE device. Using the no form of this command on a DCE interface sets the clock rate to the hardware-dependent default value.
clock rate bps| bps | Desired clock rate in bits per second: 1200 2400 4800 9600 19200 38400 56000 64000 72000 125000 148000 250000 500000 800000 1000000 1300000 2000000 4000000 or 8000000.
For the synchronous serial port adapters (PA-8T-V35, PA-8T-X21, PA-8T-232, and PA-4T+), a nonstandard clock rate can be used. You can enter any value from 300 to 8000000 bps. The clock rate you enter is rounded (adjusted), if necessary, to the nearest value your hardware can support except for the following standard rates: 1200 2400 4800 9600 14400 19200 28800 38400 56000 64000 128000 or 2015232. |
Use the clock source controller configuration command to specify where the clock source is obtained for use by the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers. Use the no form of this command to restore the default clock source.
clock source {internal | line}| internal | Specifies that the internal clock source is used. This is the default. |
| line | Specifies that the network clock source is used. |
Use the clock source interface configuration command to select the clock source for the time-division multiplexing (TDM) bus in a Cisco AS5200 access server. The no form of this command configures the clock source to its default setting.
clock source {line {primary | secondary} | internal}| line | Clock source on the active line. |
| primary | Primary TDM clock source. |
| secondary | Secondary TDM clock source. |
| internal | Selects the free running clock (also known as internal clock) as the clock source. |
Use the clock source controller configuration command to set the T1-line clock-source for the MIP in the Cisco 7200 series and Cisco 7500 series or for the NPM in the Cisco 4000 series.
clock source {line | internal}| line | Specifies the T1 line as the clock source. |
| internal | Specifies the MIP (Cisco 7200 series and Cisco 7500 series) or the NPM (Cisco 4000) as the clock source. |
Use the clock source interface configuration command to control which clock a G.703 E1 interface will use to clock its transmitted data from. The no form of this command restores the default value.
clock source {line | internal}| line | Specifies that the interface will clock its transmitted data from a clock recovered from the line's receive data stream (default). |
| internal | Specifies that the interface will clock its transmitted data from its internal clock. |
To control which clock a G.703-E1 interface will use to clock its transmitted data from, use the clock source interface configuration command. The no form of this command restores the default value.
clock source {line | internal}| line | Specifies that the interface will clock its transmitted data from a clock recovered from the line's receive data stream (default). |
| internal | Specifies that the interface will clock its transmitted data from its internal clock. |
| primary | Primary TDM clock source. |
| secondary | Secondary TDM clock source. |
Use the cmt connect EXEC command to start the processes that perform the connection management (CMT) function and allow the ring on one fiber to be started.
cmt connect [interface-name [phy-a | phy-b]]| interface-name | (Optional) Specifies the FDDI interface. |
| phy-a | (Optional) Selects Physical Sublayer A. |
| phy-b | (Optional) Selects Physical Sublayer B. |
Use the cmt disconnect EXEC command to stop the processes that perform the connection management (CMT) function and allow the ring on one fiber to be stopped.
cmt disconnect [interface-name [phy-a | phy-b]]| interface-name | (Optional) Specifies the FDDI interface. |
| phy-a | (Optional) Selects Physical Sublayer A. |
| phy-b | (Optional) Selects Physical Sublayer B. |
To configure compression for Link Access Procedure, Balanced (LAPB), Point-to-Point Protocol (PPP), and High-Level Data Link Control (HDLC) encapsulations, use the compress interface configuration command. On Cisco 7200 series routers and Cisco 7500 series routers, hardware compression on the compression service adapter (CSA) is supported for PPP links. To disable compression, use the no form of this command.
compress {predictor | stac}To configure the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the controller t3 global configuration command.
controller t3 slot/port-adapter/port| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibilty. |
To download an executable image from Flash memory on the core router to the LAN Extender chassis, use the copy flash lex privileged EXEC command.
copy flash lex number| number | Number of the LAN Extender interface to which to download an image from Flash memory. |
To download an executable image from a TFTP server to the LAN Extender, use the copy tftp lex privileged EXEC command.
copy tftp lex number| number | Number of the LAN Extender interface to which to download an image. |
To set the length of the cyclic redundancy check (CRC) on a Fast Serial Interface Processor (FSIP) or HSSI Interface Processor (HIP) of the Cisco 7500 series routers or on a 4-port serial adapter of the Cisco 7200 series routers, use the crc interface configuration command. To set the CRC length to 16 bits, use the no form of this command.
crc size| size | CRC size (16 or 32 bits). |
To set a delay value for an interface, use the delay interface configuration command. Use the no form of this command to restore the default delay value.
delay tens-of-microseconds| tens-of-microseconds | Integer that specifies the delay in tens of microseconds for an interface or network segment. |
When running the line at high speeds and long distances, use the dce-terminal-timing enable interface configuration command to prevent phase shifting of the data with respect to the clock. If SCTE is not available from the DTE, use no form of this command, which causes the DCE to use its own clock instead of SCTE from the DTE.
dce-terminal-timing enableUse the description controller configuration command to add a description to an E1 or T1 controller or the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers. Use the no form of this command to remove the description.
description string| string | Comment or a description to help you remember what is attached to the interface. Up to 80 characters. |
Use the down-when-looped interface configuration command to configure an interface to inform the system it is down when loopback is detected.
down-when-loopedUse the dte-invert-txc interface configuration command to invert the TXC clock signal received from the DCE. Use the no form of this command if the DCE accepts SCTE from the DTE.
dte-invert-txcTo enable early token release on Token Ring interfaces, use the early-token-release interface configuration command. Once enabled, use the no form of this command to disable this feature.
early-token-releaseTo set the encapsulation method used by the interface, use the encapsulation interface configuration command.
encapsulation encapsulation-type| encapsulation-type | Encapsulation type; one of the following keywords:
· atm-dxi--Asynchronous Transfer Mode-Data Exchange Interface. · bstun--Block Serial Tunnel. · frame-relay--Frame Relay (for serial interface). · hdlc--High-Level Data Link Control (HDLC) protocol for serial interface. This encapsulation method provides the synchronous framing and error detection functions of HDLC without windowing or retransmission. · isl -- Inter-Switch Link (ISL) (for virtual LANs) · lapb--X.25 LAPB DTE operation (for serial interface). · ppp--Point-to-Point Protocol (PPP) (for serial interface). · sde--IEEE 802.10 Security Data Exchange. · sdlc--IBM serial SNA. · sdlc-primary--IBM serial SNA (for primary serial interface). · sdlc-secondary--IBM serial SNA (for secondary serial interface). · smds--Switched Multimegabit Data Services (SMDS) (for serial interface). |
Use the fddi burst-count interface configuration command to allow the FCI card to preallocate buffers to handle bursty FDDI traffic (for example, NFS bursty traffic). Use the no form of this command to revert to the default value.
fddi burst-count number| number | Number of preallocated buffers in the range from 1 to 10. The default is 3 buffers. |
To set the C-Min timer on the PCM, use the fddi c-min interface configuration command. Use the no form of this command to revert to the default value.
fddi c-min microseconds| microseconds | Sets the timer value in microseconds. The default is 1600 microseconds. |
To control the information transmitted during the connection management (CMT) signaling phase, use the fddi cmt-signal-bits interface configuration command.
fddi cmt-signal-bits signal-bits [phy-a | phy-b]| signal-bits | A hexadecimal number preceded by 0x; for example, 0x208. The FDDI standard defines ten bits of signaling information that must be transmitted, as follows:
· bit 0--Escape bit. Reserved for future assignment by the FDDI standards committee. · bits 1 and 2--Physical type. · bit 3--Physical compatibility. Set if topology rules include the connection of a physical-to-physical type at the end of the connection. · bits 4 and 5--Link confidence test duration. · bit 6--Media Access Control (MAC) available for link confidence test. · bit 7--Link confidence test failed. The setting of bit 7 indicates that the link confidence was failed by the Cisco end of the connection. · bit 8--MAC for local loop. · bit 9--MAC on physical output. |
| phy-a | (Optional) Selects Physical Sublayer A. |
| phy-b | (Optional) Selects Physical Sublayer B. |
Use the fddi duplicate-address-check interface configuration command to turn on the duplicate address detection capability on the FDDI. Use the no form of this command to disable this feature.
fddi duplicate-address-checkUse the fddi encapsulate interface configuration command to specify encapsulating bridge mode on the CSC-C2/FCIT interface card. Use the no form of this command to turn off encapsulation bridging and return the FCIT interface to its translational, nonencapsulating mode.
fddi encapsulateUse the fddi smt-frames interface configuration command to enable the SMT frame processing capability on the FDDI. Use the no form of this command to disable this feature and prevent the Cisco IOS software from generating or responding to SMT frames.
fddi smt-framesUse the fddi tb-min interface configuration command to set the TB-Min timer in the physical connection management (PCM). Use the no form of this command to revert to the default value.
fddi tb-min milliseconds| milliseconds | Number that sets the TB-Min timer value. The default is 100 milliseconds. |
Use the fddi tl-min-time interface configuration command to control the TL-Min time (the minimum time to transmit a Physical Sublayer, or PHY line state, before advancing to the next physical connection management [PCM] state, as defined by the X3T9.5 specification).
fddi tl-min-time microseconds| microseconds | Number that specifies the time used during the connection management (CMT) phase to ensure that signals are maintained for at least the value of TL-Min so the remote station can acquire the signal. The default is 30 microseconds. |
Use the fddi t-out interface configuration command to set the t-out timer in the physical connection management (PCM). Use the no form of this command to revert to the default value.
fddi t-out milliseconds| milliseconds | Number that sets the timeout timer. The default is 100 ms. |
Use the fddi token-rotation-time interface configuration command to control ring scheduling during normal operation and to detect and recover from serious ring error situations.
fddi token-rotation-time microseconds| microseconds | Number that specifies the token rotation time (TRT). The default is 5,000 microseconds. |
To recover from a transient ring error, use the fddi valid-transmission-time interface configuration command.
fddi valid-transmission-time microseconds| microseconds | Number that specifies the transmission valid timer (TVX) interval. The default is 2,500 microseconds. |
To set the facilities data link exchange standard for the CSU on the AS5200's T1 controllers, enter the fdl controller configuration command. The no form of this command disables this facilities data-link support.
fdl {att | ansi}| att | Selects AT&T technical reference 54016 for extended superframe facilities data link exchange support. |
| ansi | Selects ANSI T1.403 for extended superframe facilities data link exchange support. |
Use the framing controller configuration command to select the frame type for the T1 or E1 data line.
framing {sf | esf} (for T1 lines)| sf | Specifies super frame as the T1 frame type. |
| esf | Specifies extended super frame as the T1 frame type. |
| crc4 | Specifies CRC4 frame as the E1 frame type. |
| no-crc4 | Specifies no CRC4 frame as the E1 frame type. |
| australia | (Optional) Specifies the E1 frame type used in Australia. |
Use the framing controller configuration command to specify the type of framing used by the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers. Use the no form of this command to restore the default framing type.
framing {c-bit | m23 | auto-detect}| c-bit | Specifies that the C-bit framing is used as the T3 framing type. |
| m23 | Specifies that the M23 framing is used as the T3 framing type. |
| auto-detect | Specifies that the CT3IP detects the framing type it receives from the far-end equipment. This is the default. |
Use the full-duplex interface configuration command to specify full-duplex mode on full-duplex single-mode and multimode port adapters available on
full-duplexUse the half-duplex interface configuration command to specify half-duplex mode on an SDLC interface or on the FDDI full-duplex, single-mode port adapter and FDDI full-duplex, multimode port adapter on the Cisco 7200 series, and Cisco 7500 series routers. Refer to the Cisco Product Catalog for specific model numbers of port adapters.
half-duplexUse the half-duplex controlled-carrier interface configuration command to place a low-speed serial interface in controlled-carrier mode, instead of constant-carrier mode. Use the no form of this command to return the interface to constant-carrier mode.
half-duplex controlled-carrierTo tune half-duplex timers, use the half-duplex timer interface configuration command. Use the no form of this command, along with the appropriate keyword, to return to the default value for that parameter.
half-duplex timer {cts-delay value | cts-drop-timeout value | dcd-drop-delay value || cts-delay value | Specifies the delay introduced by the DCE interface between the time it detects RTS to the time it asserts CTS in response. The range is dependent on the serial interface hardware. The default value is 0 ms. |
| cts-drop-timeout value | Determines the amount of time a DTE interface waits for CTS to be deasserted after it has deasserted RTS. If CTS is not deasserted during this time, an error counter is incremented to note this event. The range is 0 to 1140000 ms (1140 seconds). The default value is 250 ms. |
| dcd-drop-delay value | Applies to DCE half-duplex interfaces operating in controlled-carrier mode (see the half-duplex controlled-carrier command). This timer determines the delay between the end of transmission by the DCE and the deassertion of DCD. The range is 0 to 4400 ms (4.4 seconds). The default value is 100 ms. |
| dcd-txstart-delay value | Applies to DCE half-duplex interfaces operating in controlled-carrier mode. This timer determines the time delay between the assertion of DCD and the start of data transmission by the DCE interface. The range is 0 to 1140000 ms (1140 seconds). The default value is 100 ms. |
| rts-drop-delay value | Specifies the time delay between the end of transmission by the DTE interface and deassertion of RTS. The range is 0 to 1140000 ms (1140 seconds). The default value is 3 ms. |
| rts-timeout value | Determines the number of milliseconds the DTE waits for CTS to be asserted after the assertion of RTS before giving up on its transmission attempt. If CTS is not asserted in the specified amount of time, an error counter is incremented. The range is dependent on the serial interface hardware. The default value is 3 ms. |
| transmit-delay value | Specifies the number of milliseconds a half-duplex interface will delay the start of transmission. In the case of a DTE interface, this delay specifies how long the interface waits after something shows up in the transmit queue before asserting RTS. For a DCE interface, this dictates how long the interface waits after data is placed in the transmit queue before starting transmission. If the DCE interface is in controlled-carrier mode, this delay shows up as a delayed assertion of DCD.
This timer enables the transmitter to be adjusted if the receiver is a little slow and is not able to keep up with the transmitter. The range is 0 to 4400 ms (4.4 seconds). The default value is 0 ms. |
To specify the hold-queue limit of an interface, use the hold-queue interface configuration command. Use the no form of this command with the appropriate keyword to restore the default values for an interface.
hold-queue length {in | out}| length | Integer that specifies the maximum number of packets in the queue. |
| in | Specifies the input queue. |
| out | Specifies the output queue. |
Use the hssi external-loop-request interface configuration command to allow the router to support a CSU/DSU that uses the LC signal to request a loopback from the router. Use the no form of this command to disable the feature.
hssi external-loop-requestTo convert the HSSI interface into a 45 MHz clock master, use the hssi internal-clock interface configuration command. Use the no form of this command to disable the clock master mode.
hssi internal-clockTo enable and configure a port on an Ethernet hub of a Cisco 2505 or Cisco 2507, use the hub global configuration command.
hub ethernet number port [end-port]| ethernet | Indicates that the hub is in front of an Ethernet interface. |
| number | Hub number, starting with 0. Since there is currently only one hub, this number is 0. |
| port | Port number on the hub. On the Cisco 2505, port numbers range from 1 to 8. On the Cisco 2507, port numbers range from 1 to 16. If a second port number follows, then the first port number indicates the beginning of a port range. |
| end-port | (Optional) Last port number of a range. |
Use the ignore-dcd interface configuration command to configure the serial interface to monitor the DSR signal (instead of the DCD signal) as the line up/down indicator. Use the no form of this command to restore the default behavior.
ignore-dcdUse the interface global configuration command to configure an interface type and enter interface configuration mode.
interface type number| type | Type of interface to be configured. |
| number | Port, connector, or interface card number. On a Cisco 4000 series router, specifies the NPM number. The numbers are assigned at the factory at the time of installation or when added to a system, and can be displayed with the show interfaces command. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| :channel-group | The Cisco 4000 series routers specifies the T1 channel group number in the range of 0 to 23 defined with the channel-group controller configuration command. On a dual port card, it is possible to run channelized on one port and primary rate on the other port. |
| .subinterface-number | Subinterface number in the range 1 to 4294967293. The number that precedes the period (.) must match the number to which this subinterface belongs. |
| multipoint | point-to-point | (Optional) Specifies a multipoint or point-to-point subinterface. There is no default. |
To designate a dialer rotary group leader, use the interface dialer global configuration command.
interface dialer interface-number| interface-number | Integer that you select to indicate a dialer rotary group in the range 0 to 9. |
To select a particular Fast Ethernet interface for configuration, use the interface fastethernet global configuration command.
interface fastethernet number (Cisco 4500 and 4700 routers)To create a group interface that will serve as master, to which asynchronous interfaces can be associated as members, use the interface group-async command. Use the no form of the command to restore the default.
interface group-async unit-number| unit-number | The number of the asynchronous group interface being created. |
Use the interface vg-anylan global configuration command to specify the interface on a 100VG-AnyLAN port adapter and enter interface configuration mode on Cisco 7200 series routers and Cisco 7500 series routers.
interface vg-anylan slot/port-adapter/port (VIP cards in Cisco 7500 series routers)| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
To invert the data stream, use the invert data interface configuration command. This command applies only to the Cisco 7200 series routers and Cisco 7500 series routers. Use the no form of this command to disable this feature.
invert dataThe invert txclock command replaces this command. Refer to the description of invert txclock for information on the transmit clock signal.
Use the invert txclock interface configuration command to invert the transmit clock signal. Delays between the SCTE clock and data transmission indicate that the transmit clock signal might not be appropriate for the interface rate and length of cable being used. Different ends of the wire can have variances that differ slightly.The invert txclock command compensates for these variances. This command replaces the invert data command.
invert txclockTo enable incoming ISDN voice calls to access the Cisco AS5200 call switch module and integrated modems, use the isdn incoming-voice modem interface configuration command. The no form of this command stops all incoming ISDN analog calls from routing to the modems.
isdn incoming-voice modemTo set the keepalive timer for a specific interface, use the keepalive interface configuration command. To turn off keepalives entirely, use the no form of this command.
keepalive [seconds]| seconds | (Optional) Unsigned integer value greater than 0. The default is 10 seconds. |
To set the burned-in MAC address for a LAN Extender interface, use the lex burned-in-address interface configuration command. To clear the burned-in MAC address, use the no form of this command.
lex burned-in-address ieee-address| ieee-address | 48-bit IEEE MAC address written as a dotted triplet of four-digit hexadecimal numbers. |
To assign an access list that filters on MAC addresses, use the lex input-address-list interface configuration command. To remove an access list from the interface, use the no form of this command.
lex input-address-list access-list-number| access-list-number | Number of the access list you assigned with the access-list global configuration command. It can be a number from 700 to 799. |
Use the lex input-type-list interface configuration command to assign an access list that filters Ethernet packets by type code. To remove an access list from the interface, use the no form of this command.
lex input-type-list access-list-number| access-list-number | Number of the access list you assigned with the access-list global configuration command. It can be a number in the range 200 to 299. |
Use the lex priority-group interface configuration command to activate priority output queuing on the LAN Extender. To disable priority output queuing, use the no form of this command.
lex priority-group group| group | Number of the priority group. It can be a number in the range 1 to 10. |
Use the lex retry-count interface configuration command to define the number of times to resend commands to the LAN Extender chassis. To return to the default value, use the no form of this command.
lex retry-count number| number | Number of times to retry sending commands to the LAN Extender. It can be a number in the range 0 to 100. The default is 10 times. |
Use the lex timeout interface configuration command to define the amount of time to wait for a response from the LAN Extender. To return to the default time, use the no form of this command.
lex timeout milliseconds| milliseconds | Time, in milliseconds, to wait for a response from the LAN Extender before resending the command. It can be a number in the range 500 to 60000. The default is 2000 ms (2 seconds). |
Use the linecode controller configuration command to select the line-code type for the T1 or E1 line.
linecode {ami | b8zs | hdb3}| ami | Specifies alternate mark inversion (AMI) as the line-code type. Valid for T1 or E1 controllers. |
| b8zs | Specifies B8ZS as the line-code type. Valid for T1 controller only. |
| hdb3 | Specifies high-density bipolar 3 (hdb3) as the line-code type. Valid for E1 controller only. |
To reenable the link-test function on a port on an Ethernet hub of a Cisco 2505 or Cisco 2507, use the link-test hub configuration command. Use the no form of this command to disable this feature if a pre-10BaseT twisted-pair device not implementing link test is connected to the hub port.
link-testTo enable Lanoptics Hub Networking Management of a PCbus Token Ring interface, use the local-lnm interface configuration command. Use the no form of this command to disable Lanoptics Hub Networking Management.
local-lnmTo diagnose equipment malfunctions between interface and device, use the loopback interface configuration command. The no form of this command disables the test.
loopbackTo loop individual T1 channels on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the loopback interface configuration command. Use the no form of this command to remove the loopback.
loopback [local | network {line | payload} | remote {line [fdl] [ansi] | inband} || local | (Optional) Loops the router output data back toward the router at the T1 framer and sends an AIS signal out toward the network. |
| network {line | payload} | (Optional) Loops the data back toward the network before the T1 framer and automatically sets a local loopback at the HDLC controllers (line) or loops the payload data back toward the network at the T1 framer and automatically sets a local loopback at the HDLC controllers (payload). |
| remote line [fdl] [ansi] | (Optional) Sends a repeating, 16-bit ESF data link code word (00001110 11111111) to the remote end requesting that it enter into a network line loopback. Enables the remote line Facility Data Link (FDL) ANSI bit loopback on the T1 channel.
You can optionally specify fdl and ansi, but it is not necessary. |
| remote line inband | (Optional) Sends a repeating, 5-bit inband pattern (00001) to the remote end requesting that it enter into a network line loopback. |
| remote payload [fdl] [ansi] | (Optional) Sends a repeating, 16-bit ESF data link code word (00010100 11111111) to the remote end requesting that it enter into a network payload loopback. Enables the remote payload Facility Data Link (FDL) ANSI bit loopback on the T1 channel.
You can optionally specify fdl and ansi, but it is not necessary. |
To loop the entire T3 (all 28 T1 channels) on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the loopback controller configuration command. Use the no form of this command to remove the loopback.
loopback [local | network | remote]| local | (Optional) Loops the data back toward the router and sends an AIS signal out toward the network. |
| network | (Optional) Loops the data toward the network at the T1 framer. |
| remote | (Optional) Sends a far-end alarm control (FEAC) request to the remote end requesting that it enter into a network line loopback. FEAC requests (and therefore remote loopbacks) are only possible when the T3 is configured for C-bit framing. The type of framing used is determined by the equipment you are connecting to (for more information, see the framing controller command). |
To configure an internal loop on the HSSI applique, use the loopback interface configuration command. To remove the loop, use the no form of this command.
loopback appliqueTo loop packets back to the DTE from the CSU/DSU, when the device supports this feature, use the loopback interface configuration command. To remove the loop, use the no form of this command.
loopback dteWhen the device supports this feature, use the loopback line interface configuration command to loop packets completely through the CSU/DSU to configure the CSU loop. To remove the loop, use the no form of this command.
loopback line [payload]| payload | (Optional) Configures a loopback point at the DSU and loops back data to the network on an integrated CSU/DSU. |
To loop packets through a CSU/DSU, over a DS-3 link or a channelized T1 link, to the remote CSU/DSU and back, use the loopback remote interface configuration command. To remove the loopback, use the no form of this command.
loopback remote {full | payload | smart-jack} [0in1 | 1in1 | 1in2 | 1in5 | 1in8 | 3in24 | qrw |full | Transmits a full-bandwidth line loopback request to a remote device, which is used for testing the line and remote CSU. |
|---|---|
| payload | Transmits a payload line loopback request to a remote device, which is used for testing the line and remote DSU. |
| smart-jack | Transmits a loopback request to the remote smart-jack, which some service providers attach on the line before the customer premises equipment (CPE). You cannot put the local smart-jack into loopback. |
| 0in1 | (Optional) Transmits an all-zeros test pattern used for verifying B8ZS line encoding. The remote end my report a loss of signal when using alternate mark inversion (AMI) line coding. |
| 1in1 | (Optional) Transmits an all-ones test pattern used for signal power measurements. |
| 1in2 | (Optional) Transmits an alternating ones and zeroes test pattern used for testing bridge taps. |
| 1in5 | (Optional) Transmits the industry standard test-pattern loopback request. |
| 1in8 | (Optional) Transmits a test pattern used for stressing timing recovery of repeaters. |
| 3in24 | (Optional) Transmits a test pattern used for testing the ones density tolerance on AMI lines. |
| qrw | (Optional) Transmits a quasi-random word test pattern, which is a random signal that simulates user data. |
| user-pattern 24bit-binary value | (Optional) Transmits a test pattern that you define. Enter a binary string up to 24 bits long. For the fixed patterns such 0in1 and 1in1, the T1 framing bits are jammed on top of the test pattern; for the user-pattern, the pattern is simply repeated in the timeslots. |
| 2047 | Transmits a pseudo-random test pattern that repeats after 2047 bits. |
| 511 | Transmits a pseudo-random test pattern that repeats after 511 bits. |
| stress-pattern pattern number | Transmits a DDS stress pattern available only on the 4-wire 56/64-kbps CSU/DSU module. You may enter a stress pattern from 1 to 4. A 1 pattern sends 100 bytes of all 1s and then 100 bytes of all 0s to test the stress clocking of the network. A 2 pattern sends 100 bytes of a 0x7e pattern then 100 bytes of all 0s. A 3 pattern sends continuous bytes of a 0x46 pattern. A 4 pattern sends continuous bytes of 0x02 pattern. |
Use the mdl interface configuration command to configure the Maintenance Data Link (MDL) message defined in the ANSI T1.107a-1990 specification for the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers. Use the no form of this command to remove the message.
mdl {transmit {path | idle-signal | test-signal} | string {eic | lic | fic | unit | pfi | port || transmit path | Enables transmission of the MDL Path message. |
| transmit idle-signal | Enables transmission of the MDL Idle Signal message. |
| transmit test-signal | Enables transmission of the MDL Test Signal message. |
| string eic string | Specifies the Equipment Identification Code; can be up to 10 characters. |
| string lic string | Specifies the Location Identification Code; can be up to 11 characters. |
| string fic string | Specifies the Frame Identification Code; can be up to 10 characters. |
| string unit string | Specifies the Unit Identification Code; can be up to 6 characters. |
| string pfi string | Specifies the Facility Identification Code sent in the MDL Path message; can be up to 38 characters. |
| string port string | Specifies the Port number string sent in the MDL Idle Signal message; can be up to 38 characters. |
| string generator string | Specifies the Generator number string sent in the MDL Test Signal message; can be up to 38 characters. |
To specify the physical connection for one of the following configurations, use the media type interface configuration command:
media-type {aui | 10baset | 100baset | mii}| aui | Selects a 15-pin physical connection. |
| 10baset | Selects an RJ45 10BaseT physical connection. |
| 100baset | Specifies an RJ45 100BaseT physical connection. |
| mii | Specifies a media-independent interface. |
Use the mop enabled interface configuration command to enable an interface to support the Maintenance Operation Protocol (MOP). To disable MOP on an interface, use the no form of this command.
mop enabledTo enable an interface to send out periodic Maintenance Operation Protocol (MOP) system identification messages, use the mop sysid interface configuration command. To disable MOP message support on an interface, use the no form of this command.
mop sysidTo adjust the maximum packet size or maximum transmission unit (MTU) size, use the mtu interface configuration command. Use the no form of this command to restore the MTU value to its original default value.
mtu bytes| bytes | Desired size in bytes. |
Use the nrzi-encoding interface configuration command to enable nonreturn-to-zero inverted (NRZI) line-coding format. Use the no form of this command to disable this capability.
nrzi-encoding| mark | (Optional) Specifies that NRZI mark encoding is required on the PA-8T and PA-4T+ synchronous serial port adapters on Cisco 7200 and 7500 series routers. If mark is not specified, NRZI space encoding is used. |
To specify the mode of a slow-speed serial interface on a router as either synchronous or asynchronous, use the physical-layer interface configuration command. To return the interface to the default mode of synchronous, use the no form of this command.
physical-layer {sync | async}| sync | Place the interface in synchronous mode. |
| async | Place the interface in asynchronous mode. |
To select SDH STM-1 framing on a Packet OC-3 interface in Cisco 7500 series routers, use the pos framing-sdh interface configuration command. To revert to the default SONET STS-3c framing, use the no form of this command.
pos framing-sdhTo set the internal clock as the transmission clock source on a Packet OC-3 interface in Cisco 7500 series routers, use the pos internal-clock interface configuration command. To revert to the default recovered receive clock as the transmission clock source, use the no form of this command.
pos internal-clockTo specify ISDN Primary Rate Interface (PRI) on a channelized E1 or T1 card on the Cisco 7500, use the pri-group controller configuration command. Use the no form of this command to remove the ISDN PRI.
pri-group [timeslots range]| timeslots range | (Optional) Specifies a single range of values from 1 to 23. |
To enable pulsing DTR signal intervals on the serial interfaces, use the pulse-time interface configuration command. Use the no form of this command to restore the default interval.
pulse-time seconds| seconds | Integer that specifies the DTR signal interval in seconds. |
To set the ring speed for the CSC-1R and CSC-2R Token Ring interfaces, use the ring-speed interface configuration command.
ring-speed speed| speed | Integer that specifies the ring speed, either 4 for 4-Mbps or 16 for 16-Mbps operation. |
To configure the network line speed for a serial interface on a 4-wire 56/64-kbps CSU/DSU module, use the service-module 56k clock rate interface configuration command. Use the no form of this command to enable a network line speed of 56 kbps, which is the default.
service-module 56k clock rate speed| speed | Network line speed in kbps. The default speed is 56 kbps. Choose from one of the following optional speeds:
· 2.4--2400 kbps · 4.8--4800 kbps · 9.6--9600 kbps · 19.2--19200 kbps · 38.4--38400 kbps · 56--56000 kbps · 64--64000 kbps · auto--Automatic line speed mode. Configure this option if your line speed is constantly changing. |
To set up the clock source on a serial interface for a 4-wire 56/64-kbps CSU/DSU module, use the service-module 56k clock source interface configuration command. Use the no form of this command to specify the clocking come from line.
service-module 56k clock source {line | internal}| line | Use the clocking provided by the active line coming in to the router. |
| internal | Use the internal clocking provided by the hardware module. |
To prevent application data from replicating loopback codes when operating at 64 kbps on a 4-wire CSU/DSU, use the service-module 56k data-coding interface configuration command. Use the no form of this command to enable normal transmission.
service-module 56k data-coding {normal | scrambled}| normal | Specifies normal transmission of data. |
| scrambled | Scrambles bit codes or user data before transmission. All control codes such as out of service and out of frame are avoided. |
To transmit packets in switched dial-up mode or digital data service (DDS) mode using a serial interface on a 4-wire 56/64-kbps CSU/DSU module, use the service-module 56k network-type interface configuration command. Use the no form of this command to transmit from a dedicated leased line in DDS mode.
service-module 56k network-type {dds | switched}| dds | Transmits packets in DDS mode or through a dedicated leased line. |
| switched | Transmits packets in switched dial-up mode. On a 2-wire switched 56-kbps CSU/DSU module this is the default and only setting. |
To enable the acceptance of a remote loopback request on a serial interface on a 2- or 4-wire 56/64-kbps CSU/DSU module, use the service-module 56k remote-loopback interface configuration command. Use the no form of this command to disable the module from entering loopback.
service-module 56k remote-loopbackTo select a service provider to use with a 2- or 4-wire 56/64 kbps dial-up serial line, use the service-module 56k switched-carrier interface configuration command. Use the no form of this command to enable the default service provider.
service-module 56k switched-carrier {att | sprint | other}| att | AT&T or other digital network service provider. |
| sprint | Sprint or other service provider whose network requires echo cancelers. |
| other | Service provider besides AT&T or Sprint. |
To specify the clock source for the fractional T1/T1 CSU/DSU module, use the service-module t1 clock source interface configuration command. Use the no form of this command to enable the line clock.
service-module t1 clock source {internal | line}| internal | Specifies the CSU/DSU internal clock. |
| line | Specifies the line clock. |
To guarantee the ones density requirement on an AMI line using the fractional T1/T1 module, use the service-module t1 data-coding inverted interface configuration command. Use the no form of this command to enable normal data transmission.
service-module t1 data-coding {inverted | normal}| inverted | Inverts bit codes by changing all 1 bits into 0 bits and all 0 bits into 1 bits. |
| normal | Requests that no bit codes be inverted before transmission. |
To select the frame type for a line using the fractional T1/T1 (FT1/T1) module, use the service-module t1 framing interface configuration command. Use the no form of this command to select the default, which is Extended Super Frame as the T1 frame type.
service-module t1 framing {esf | sf}| esf | Specifies Extended Super Frame as the T1 frame type. |
| sf | Specifies D4 Super Frame as the T1 frame type. |
To configure the CSU line build out (LBO) on a fractional T1/T1 CSU/DSU module, use the service-module t1 lbo interface configuration command. Use the no form of this command to disable line build out.
service-module t1 lbo {-15 db | -7.5 db | none}| -15 db | Decreases outgoing signal strength by 15 dB. |
| -7.5 db | Decreases outgoing signal strength by 7.5 dB. |
| none | Transmits packets without decreasing outgoing signal strength. |
To select the line code for the fractional T1/T1 module, use the service-module t1 linecode interface configuration command. Use the no form of this command to select the default, which is the B8ZS line code.
service-module t1 linecode {ami | b8zs}| ami | Specifies alternate mark inversion (AMI) as the line code. |
| b8zs | Specifies binary 8 zero substitution (B8ZS) as the line code. |
To generate remote alarms (yellow alarms) at the local CSU/DSU or detect remote alarms sent from the remote CSU/DSU, use the service-module t1 remote-alarm-enable interface configuration command. Use the no form of this command to disable remote alarms.
service-module t1 remote-alarm-enableTo specify if the fractional T1/T1 CSU/DSU module enters loopback mode when it receives a loopback code on the line, use the service-module t1 remote-loopback interface configuration command. Use the no form of this command to disable remote loopbacks.
service-module t1 remote-loopback {full | payload} [alternate | v54]| full | Configures the remote loopback code used to transmit or accept CSU loopback requests. |
| payload | Configures the loopback code used by the local CSU/DSU to generate or detect payload-loopback commands. |
| alternate | (Optional) Transmits a remote CSU/DSU loopback request using a 4-in-5 pattern for loopup and 2-in-3 pattern for loopdown. This is an inverted version of the standard loopcode request. |
| v54 | (Optional) Industry standard loopback code. Use this configuration for CSU/DSUs that may not support the Accunet loopup standards. This keyword is used only with a payload request, not a full request. |
To define timeslots that constitute a fractional T1/T1 (FT1/T1) channel, use the service-module t1 timeslots interface configuration command. Use the no form of this command to resume the default setting (all FT1/T1 timeslots transmit at 64 kbps).
service-module t1 timeslots {range | all} [speed {56 | 64}]| range | The DS0 timeslots that constitute the FT1/T1 channel. The range is from 1 to 24, where the first timeslot is numbered 1 and the last timeslot is numbered 24. Specify this field by using a series of subranges separated by commas. |
| all | Selects all FT1/T1 timeslots. |
| speed | (Optional) Specifies the timeslot speed. |
| 56 | 56 kbps. |
| 64 | 64 kbps. This is the default for all timeslots. |
To display compression statistics, use the show compress EXEC command.
show compressTo display all information under the cBus controller card, use the show controllers cbus privileged EXEC command on the Cisco 7500 or Cisco 7513 routers. This command also shows the capabilities of the card and reports controller-related failures.
show controllers cbusUse the show controllers ethernet EXEC command to display information on the Cisco 2500 series, Cisco 3000, or Cisco 4000 series.
show controllers ethernet number| number | Interface number of the Ethernet interface. |
To display information about initialization block information, transmit ring, receive ring and errors for the Fast Ethernet controller chip on the Cisco 4500, Cisco 7200 series, or Cisco 7500 series, use the show controllers fastethernet EXEC command.
show controllers fastethernet number (Cisco 4500)To display all information under the FDDI Interface Processor (FIP) on the Cisco 7200 series and Cisco 7500 series, use the show controllers fddi user EXEC command.
show controllers fddiTo show hardware and software information about the LAN Extender chassis, use the show controllers lex EXEC command.
show controllers lex [number]| number | (Optional) Number of the LAN Extender interface about which to display information. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
Use the show controllers mci privileged EXEC command to display all information under the Multiport Communications Interface card or the SCI.
show controllers mciTo display all information about the ISA bus interface, use the show controllers pcbus privileged EXEC command.
show controllers pcbusUse the show controllers serial privileged EXEC command to display information that is specific to the interface hardware.
show controllers serialTo display information about the T1 links, use the show controllers t1 privileged EXEC command.
show controllers t1 [slot/port] (Cisco 7500 series)| slot/port | Backplane slot number and port number on the interface. See your hardware installation manual for the specific slot and port numbers. |
| number | Network processor module (NPM) number, in the range 0 through 2. |
To display information about the Channelized T3 Interface Processor (CT3IP) on Cisco 7500 series routers, use the show controllers t3 privileged EXEC command.
show controllers t3 [slot/port-adapter/port [:t1-channel]] [brief | tabular | remote performance [brief | tabular]]| slot | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| :t1-channel | (Optional) For the CT3IP, the T1 channel is a number between 1 and 28. |
| remote performance | (Optional) Displays the far-end ANSI performance monitor information when enabled on the T1 channel with the t1 fdl ansi controller command. |
| brief | (Optional) Displays a subset of information. |
| tabular | (Optional) Displays information in a tabular format. |
To display information about memory management and error counters on the Token Ring Interface Processor (TRIP) for the Cisco 7500 series, use the show controllers token privileged EXEC command.
show controllers tokenUse the show controllers vg-anylan user EXEC command to display the controller information for the 100VG-AnyLAN port adapter on Cisco 7200 series routers and Cisco 7500 series routers.
show controllers vg-anylan slot/port-adapter/port (on VIP cards in Cisco 7500 series)| slot | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| port | Refer to the appropriate hardware manual for slot and port information. |
Use the show diagbus privileged EXEC command to display diagnostic information about the controller, interface processor, and port adapters associated with a specified slot of a Cisco 7200 series or Cisco 7500 series router.
show diagbus [slot]| slot | Refer to the appropriate hardware manual for slot and port information. |
To display information about the hub (repeater) on an Ethernet interface of a Cisco 2505 or Cisco 2507, use the show hub EXEC command.
show hub [ethernet number [port [end-port]]]| ethernet | (Optional) Indicates that this is an Ethernet hub. |
| number | (Optional) Hub number, starting with 0. Since there is currently only one hub, this number is 0. |
| port | (Optional) Port number on the hub. On the Cisco 2505, port numbers range from 1 through 8. On the Cisco 2507, port numbers range from 1 through 16. If a second port number follows, then this port number indicates the beginning of a port range. |
| end-port | (Optional) Ending port number of a range. |
| type | (Optional) Interface type. Allowed values for type include async, bri0, ethernet, fastethernet, fddi, hssi, loopback, null, serial, tokenring, and tunnel.
For the Cisco 4000 series, type can be e1, ethernet, fastethernet, fddi, serial, t1, and token. For the Cisco 4500 series, type can also include atm. For the Cisco 7000 family, type can be atm, e1, ethernet, fastethernet, fddi, serial, t1, and tokenring. For the Cisco 7500 seriestype can also include posi. |
| number | (Optional) Port number on the selected interface. |
| first last | (Optional) For the Cisco 2500 and 3000 ISDN Basic Rate Interface (BRI) only. The argument first can be either 1 or 2. The argument last can only be 2, indicating B-channels 1 and 2.
D-channel information is obtained by using the command without the optional arguments. |
| accounting | (Optional) Displays the number of packets of each protocol type that has been sent through the interface. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port -adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
Use the show interfaces ethernet privileged EXEC command to display information about an Ethernet interface on the router.
show interfaces ethernet unit [accounting]| unit | Must match a port number on the selected interface. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
Use the show interface fastethernet EXEC command to display information about the FastEthernet interfaces.
show interfaces fastethernet [number] (Cisco 4500 and Cisco 4700)To display information about the FDDI interface, use the show interfaces fddi EXEC command.
show interfaces fddi number [accounting]| number | Port number on the selected interface. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
Use the show interfaces hssi privileged EXEC command to display information about the HSSI interface.
show interfaces hssi unit [accounting]| unit | Must match a port number on the selected interface. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
To display a brief summary of an IP interface's information and status, use the show interfaces ip-brief EXEC command.
show interfaces ip-briefTo display statistics about a LAN Extender interface, use the show interface lex EXEC command.
show interfaces lex number [ethernet | serial]| number | Number of the LAN Extender interface that resides on the core router about which to display statistics. |
| ethernet | (Optional) Displays statistics about the Ethernet interface that resides on the LAN Extender chassis. |
| serial | (Optional) Displays statistics about the serial interface that resides on the LAN Extender chassis. |
Use the show interfaces loopback privileged EXEC command to display information about the loopback interface.
show interfaces loopback [number] [accounting]| number | (Optional) Port number on the selected interface. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
To display information about the Packet OC-3 interface in Cisco 7500 series routers, use the show interfaces pos EXEC command.
show interfaces pos [slot/port-adapter/port] (on VIP cards in Cisco 7000 series and Cisco 7500| slot | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| port | Refer to the appropriate hardware manual for slot and port information. |
To display information about a serial interface, use the show interfaces serial privileged EXEC command.
show interfaces serial [number] [accounting]| number | (Optional) Port number. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
| :channel-group | (Optional) On the Cisco 4000 series with an NPM or Cisco 7500 series with a MIP, specifies the T1 channel-group number in the range of 0 to 23 defined with the channel-group controller configuration command. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port- | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| :t1-channel | (Optional) For the CT3IP, the T1 channel is a number between 1 and 28.
T1 channels on the CT3IP are numbered 1 to 28 rather than the more traditional zero-based scheme (0 to 27) used with other Cisco products. This is to ensure consistency with telco numbering schemes for T1 channels within channelized T3 equipment. |
| crb | (Optional) Shows interface routing and bridging information. |
Use the show interfaces tokenring privileged EXEC command to display information about the Token Ring interface and the state of source route bridging.
show interfaces tokenring unit [accounting]| unit | Must match the interface port line number. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
| slot | Refer to the appropriate hardware manual for slot and port information. |
| port | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
To list tunnel interface information, use the show interfaces tunnel privileged EXEC command.
show interfaces tunnel number [accounting]| number | Port line number. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
Use the show interfaces vg-anylan EXEC command to display the information about the 100VG-AnyLAN port adapter on Cisco 7200 series routers, Cisco 7500 series routers.
show interfaces vg-anylan [slot/port-adapter/port] (on VIP cards in Cisco 7500 series)| slot | Refer to the appropriate hardware manual for slot and port information. |
| port-adapter | Refer to the appropriate hardware manual for information about port adapter compatibility. |
| port | Refer to the appropriate hardware manual for slot and port information. |
To list a summary of an interface's IP information and status, use the show ip interface privileged EXEC command.
show ip interface [brief] [type] [number]| brief | (Optional) Displays a brief summary of IP status and configuration. |
| type | (Optional) Specifies that information be displayed about that interface type only. The possible value depends on the type of interfaces the system has. For example, it could be ethernet, null, serial, tokenring, and so forth. |
| number | (Optional) Interface number. |
Use the show rif EXEC command to display the current contents of the RIF cache.
show rifTo display the performance report for an integrated CSU/DSU, use the show service-module serial privileged EXEC command.
show service-module serial number [performance-statistics [interval-range]]| number | Interface number 0 or 1. |
| performance-statistics | (Optional) Displays the CSU/DSU performance statistics for the past 24 hours. This keyword applies only to the fractional T1/T1 module. |
| interval-range | (Optional) Specifies the number of 15-minute intervals displayed. You can choose a range from 1 to 96, where each value represents the CSU/DSU activity performed in that 15-minute interval. For example, a range of 2-3 displays the performance statistics for the intervals two and three. |
To disable the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the shutdown controller configuration command. To restart a disabled CT3IP, use the no form of this command.
shutdownUse the shutdown hub configuration command to shut down a port on an Ethernet hub of a Cisco 2505 or Cisco 2507. Use the no form of this command to restart the disabled hub.
shutdownTo disable an interface, use the shutdown interface configuration command. To restart a disabled interface, use the no form of this command.
shutdown To set the maximum number of unprocessed FDDI station management (SMT) frames that will be held for processing, use the smt-queue-threshold global configuration command. Use the
no form of this command to restore the queue to the default.
| number | Number of buffers used to store unprocessed SMT messages that are to be queued for processing. Acceptable values are positive integers. |
To issue an SNMP trap when a MAC address violation is detected on an Ethernet hub port of a Cisco 2505, Cisco 2507, or Cisco 2516 router, use the snmp trap illegal-address hub configuration command. Use the no form to disable this function.
snmp trap illegal-addressTo configure source address control on a port on an Ethernet hub of a Cisco 2505 or Cisco 2507, use the source-address hub configuration command. To remove a previously defined source address, use the no form of this command.
source-address [mac-address]| mac-address | (Optional) MAC address in the packets that the hub will allow to access the network. |
To extend the Ethernet twisted-pair 10BaseT capability beyond the standard 100 meters on the Cisco 4000 platform, use the squelch interface configuration command. To restore the default, use the no form of this command.
squelch {normal | reduced}| normal | Allows normal capability. |
| reduced | Allows extended 10BaseT capability. |
To enable or disable a BERT test pattern for a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 bert controller configuration command. To disabled a BERT test pattern, use the no form of this command.
t1 channel bert pattern {0s | 1s | 2^15 | 2^20 | 2^23} interval minutes| channel | Number between 1 and 28 that indicates the T1 channel. |
| pattern {0s | 1s | 2^15 | 2^20 | 2^23} | Specifies the length of the repeating BERT test pattern. Values are:
· 0s--Repeating pattern of zeros (...000...). · 1s--Repeating pattern of ones (...111...). · 2^15--Pseudo-random repeating pattern that is 32767 bits in length. · 2^20--Pseudo-random repeating pattern that is 1048575 bits in length. · 2^23--Pseudo-random repeating pattern that is 8388607 bits in length. |
| interval minutes | Specifies the duration of the BERT test. The interval can be a value from 1 to 14400 minutes. |
To specify where the clock source is obtained for use by each T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 clock source controller configuration command.
t1 channel clock source {internal | line}| channel | Number between 1 and 28 that indicates the T1 channel. |
| internal | Specifies that the internal clock source is used. This is the default. |
| line | Specifies that the network clock source is used. |
To specify that a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers is used as an external port so the T1 channel can be further multiplexed on the Multichannel Interface Processor (MIP) or other multiplexing equipment, use the t1 external controller configuration command. Use the no form of this command to remove a T1 as an external port.
t1 external channel [cablelength feet] [linecode ami | b8zs]| channel | Number 1, 2, or 3 that indicates the T1 channel. |
| cablelength feet | (Optional) Specifies the cable length in feet from the T1 channel to the external CSU or MIP. Values are 0 to 655 feet. The default is 133 feet. |
| linecode ami | b8zs | (Optional) Specifies the line coding used by the T1. Values are alternate mark inversion (AMI) or bipolar 8 zero suppression (B8ZS). The default is B8ZS. |
To enable the one-second transmission of the remote performance reports via the Facility Data Link (FDL) per ANSI T1.403 for a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 fdl ansi controller configuration command. Use the no form of this command to disable the performance report.
t1 channel fdl ansi| channel | Number between 1 and 28 that indicates the T1 channel. |
To specify the type of framing used by the T1 channels on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 framing controller configuration command.
t1 channel framing {esf | sf}| channel | Number between 1 and 28 that indicates the T1 channel. |
| esf | Specifies that extended super frame is used as the T1 framing type. This is the default. |
| sf | Specifies that super frame is used as the T1 framing type. |
To specify the type of line coding used by the T1 channels on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 linecode controller configuration command.
t1 channel linecode {ami | b8zs}| channel | Number between 1 and 28 that indicates the T1 channel. |
| ami | Specifies that alternate mark inversion (AMI) line coding is used by the T1 channel. |
| b8zs | Specifies that bipolar 8 zero suppression (B8ZS) line coding is used by the T1 channel. This is the default. |
To break out a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers to the test port for testing, use the t1 test controller configuration command. Use the no form of this command to remove the T1 channel from the test port.
t1 test channel [cablelength feet] [linecode {ami | b8zs}]| channel | Number between 1 and 28 that indicates the T1 channel. |
| cablelength feet | (Optional) Specifies the cable length from the T1 channel to the external CSU or MIP. Values are 0 to 655 feet. The default cable length is 133 feet. |
| linecode {ami | b8zs} | (Optional) Specifies the line coding format used by the T1 channel. Values are alternate mark inversion (AMI) or bipolar 8 zero suppression (B8ZS). The default is B8ZS. |
To specify the timeslots and data rate used on each T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 timeslot controller configuration command. Use the no form of this command to remove the configured T1 channel.
t1 channel timeslot range [speed {56 | 64}]| channel | Number between 1 and 28 that indicates the T1 channel. |
| timeslot range | Specifies the timeslots assigned to the T1 channel. The range can be 1 to 24. A dash represents a range of timeslots, and a comma separates timeslots. For example, 1-10,15-18 assigns timeslots 1 through 10 and 15 through 18. |
| speed {56 | 64} | (Optional) Specifies the data rate for the T1 channel. Values are 56 kbps or 64 kbps. The default is 64 kbps. The 56-kbps speed is valid only for T1 channels 21 through 28. |
To enable detection and generation of yellow alarms for a T1 channel on the Channelized T3 Interface Processor (CT3IP) in Cisco 7500 series routers, use the t1 yellow controller configuration command. Use the no form of this command to disable the detection and generation of yellow alarms.
t1 channel yellow {detection | generation}| channel | Number between 1 and 28 that indicates the T1 channel. |
| detection | Detect yellow alarms. |
| generation | Generate yellow alarms. |
Use the test interface fastethernet EXEC command to test the Fast Ethernet interface by causing the interface to ping itself.
test interface fastethernet number| number | Port, connector, or interface card number. On a Cisco 4500 or Cisco 4700 series router, specifies the NPM number. The numbers are assigned at the factory at the time of installation or when added to a system, and can be displayed with the show interfaces command. |
To perform self-tests on an integrated CSU/DSU serial interface module, such as a 4-wire 56/64 kbps CSU/DSU, issue the test service-module privileged EXEC command.
test service-module type number| type | Interface type. |
| number | Interface number. |
To enable framed mode serial interface on a G.703 E1 port adapter on an FSIP, use the timeslot interface configuration command. To restore the default, use the no form of this command or set the start slot to 0.
timeslot start-slot - stop-slot| start-slot | The first subframe in the major frame. Range is 1 to 31 and must be less than or equal to stop-slot. |
| stop-slot | The last subframe in the major frame. Range is 1 to 31 and must be greater than or equal to start-slot. |
When a DTE does not return a transmit clock, use the transmit-clock-internal interface configuration command to enable the internally generated clock on a serial interface on a Cisco 7200 series or Cisco 7500 series. Use the no form of this command to disable the feature.
transmit-clock-internalTo specify a minimum dead-time after transmitting a packet, use the transmitter-delay interface configuration command. The no form of this command restores the default.
transmitter-delay delay| delay | On the FSIP, HSSI, and on the IGS router, the minimum number of HDLC flags to be sent between successive packets. On all other serial interfaces and routers, approximate number of microseconds of minimum delay after transmitting a packet. The valid range is 0 to 131071. |
To control the use of time slot 16 for data on a G.703 E1 interface, use the ts16 interface configuration command. To restore the default, use the no form of this command.
ts16To enable encapsulator-to-decapsulator checksumming of packets on a tunnel interface, use the tunnel checksum interface configuration command. To disable checksumming, use the no form of this command.
tunnel checksumTo specify the destination for a tunnel interface, use the tunnel destination interface configuration command. To remove the destination, use the no form of this command.
tunnel destination {hostname | ip-address}| hostname | Name of the host destination |
| ip-address | IP address of the host destination expressed in decimal in four-part, dotted notation |
To enable an ID key for a tunnel interface, use the tunnel key interface configuration command. To remove the ID key, use the no form of this command.
tunnel key key-number| key-number | Number from 0 to 4294967295 that identifies the tunnel key. |
To set the encapsulation mode for the tunnel interface, use the tunnel mode interface configuration command. To set to the default, use the no form of this command.
tunnel mode {aurp | cayman | dvmrp | eon | gre ip | nos}| aurp | AppleTalk Update Routing Protocol (AURP). |
| cayman | Cayman TunnelTalk AppleTalk encapsulation. |
| dvmrp | Distance Vector Multicast Routing Protocol. |
| eon | EON compatible CLNS tunnel. |
| gre ip | Generic route encapsulation (GRE) protocol over IP. |
| nos | KA9Q/NOS compatible IP over IP. |
To configure a tunnel interface to drop datagrams that arrive out of order, use the tunnel sequence-datagrams interface configuration command. To disable this function, use the no form of this command.
tunnel sequence-datagramsTo set a tunnel interface's source address, use the tunnel source interface configuration command. To remove the source address, use the no form of this command.
tunnel source {ip-address | type number}| ip-address | IP address to use as the source address for packets in the tunnel. |
| type | Interface type. |
| number | Specifies the port, connector, or interface card number. The numbers are assigned at the factory at the time of installation or when added to a system, and can be displayed with the show interfaces command. |
To control the number of transmit buffers available to a specified interface on the MCI and SCI cards, use the tx-queue-limit interface configuration command.
tx-queue-limit number| number | Maximum number of transmit buffers that the specified interface can subscribe. |
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