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This chapter describes the function and displays the syntax of each dial-on-demand routing command. For more information about defaults and usage guidelines, see the corresponding chapter of the Router Products Command Reference publication.
[no] backup delay {enable-delay | never} {disable-delay | never}
To define how much time should elapse before a secondary line status changes after a primary line status has changed, use the backup delay interface configuration command. To return to the default, which means as soon as the primary fails, the secondary is brought up without delay, use the no form of this command.
| enable-delay | Number of seconds that elapse after the primary line goes down before the router activates the secondary line. The default is 0 seconds. |
| disable-delay | Number of seconds that elapse after the primary line goes up before the router deactivates the secondary line. The default is 0 seconds. |
| never | Prevents the secondary line from being activated or deactivated. |
[no] backup interface type number
To configure the serial interface as a secondary or dial backup line, use the backup interface interface configuration command. To disable this feature, use the no form of this command.
| type | Interface type. It must be serial. |
| number | Serial port to be set as the secondary line. |
[no] backup load {enable-threshold | never} {disable-load | never}
To set traffic load threshold for dial backup service, use the backup load interface configuration command. To return to the default value, use the no form of this command.
| enable-threshold | Percentage of the primary line's available bandwidth. |
| disable-load | Percentage of the primary line's available bandwidth. |
| never | Sets the secondary line to never be activated due to traffic load. |
[no] chat-script script-name expect-send
Use the chat-script global configuration command to create a script that will place a call over a modem. Use the no form of this command to disable the specified chat script.
| script-name | Name of the chat script |
| expect-send | Content of the chat script |
[no] dialer dtr
To enable DDR on an interface and specify that the serial line is connected by non-V.25bis modems using EIA signaling only (the data terminal ready [DTR] signal), use the dialer dtr interface configuration command. To disable dial-on-demand routing for the interface, use the no form of this command.
dialer enable-timeout seconds
no dialer enable-timeout
Use the dialer enable-timeout interface configuration command to set the length of time an interface stays down after a call has completed or failed before it is available to dial again. Use the no form of this command to reset the enable timeout value to the default.
| seconds | Time in seconds that the router waits before the next call can occur on the specific interface. Acceptable values are positive, nonzero integers. The default is 15 seconds. |
dialer fast-idle seconds
no dialer fast-idle
Use the dialer fast-idle interface configuration command to specify the amount of time that a line for which there is contention will stay idle before the line is disconnected and the competing call is placed. Use the no form of this command to return to the default value.
| seconds | Idle time, in seconds, that must occur on an interface before the line is disconnected. Acceptable values are positive, nonzero integers. The default is 20 seconds. |
dialer hold-queue packets
no dialer hold-queue [packets]
To allow "interesting" outgoing packets to be queued until a modem connection is established, use the dialer hold-queue interface configuration command. To disable a dialer hold queue, use the no form of this command.
| packets | Number of packets, in the range 0 to 100 packets, to hold in the queue. This argument is optional with the no form of this command. |
dialer idle-timeout seconds
no dialer idle-timeout
Use the dialer idle-timeout interface configuration command to specify the idle time before the line is disconnected. Use the no form of this command to reset the idle timeout to the default value.
| seconds | Idle time, in seconds, that must occur on an interface before the line is disconnected. Acceptable values are positive, nonzero integers. The default is 120 seconds. |
dialer in-band [no-parity | odd-parity]
no dialer in-band
Use the dialer in-band interface configuration command to specify that DDR is to be supported. Use the no form of this command to disable dial-on-demand routing for the interface.
| no-parity | (Optional) Indicates that no parity is to be applied to the dialer string that is sent out to the modem on synchronous interfaces. |
| odd-parity | (Optional) Indicates that the dialed number has odd parity (7-bit ASCII characters with the eighth bit the parity bit) on synchronous interfaces. |
dialer load-threshold load
no dialer load-threshold
To configure bandwidth on demand by setting the maximum load before the dialer places another call to a destination, use the dialer load-threshold interface configuration command. To disable the setting, use the no form of this command.
| load | Interface load beyond which the dialer will initiate another call to the destination. This argument is a number between 1 and 255. |
[no] dialer map protocol next-hop-address [modem-script
modem-regexp] [system-script system-regexp]
dial-string[:isdn-subaddress]
[no] dialer map protocol next-hop-address [modem-script
modem-regexp] [system-script system-regexp] name hostname
dial-string[:isdn-subaddress]
To configure a serial interface to call one or multiple sites, use the dialer map interface configuration command. To place a call to a single site on an asynchronous line for which a modem script has not been assigned or a system script must be specified, or to multiple sites on a single line, multiple lines, or a dialer rotary group, use the first form of the dialer map command. To place a call to multiple sites and to authenticate calls from multiple sites, use the second form of the dialer map command. To delete a particular dialer map entry, use the no form of this command.
| protocol | Protocol keyword. See the supported protocols table for this command in the Router Products Command Reference publication. |
| next-hop-address | Protocol address used to match against addresses to which packets are destined. |
| modem-script | (Optional) Indicates the modem script to be used for the connection (for asynchronous interfaces). |
| modem-regexp | (Optional) Regular expression to which a modem script will be matched (for asynchronous interfaces). |
| system-script | (Optional) Indicates the system script to be used for the connection (for asynchronous interfaces). |
| system-regexp | (Optional) Regular expression to which a system script will be matched (for asynchronous interfaces). |
| name | (Optional) Indicates the remote system with which the local router communicates. |
| hostname | (Optional) Name of the remote device (usually the host name). |
| dial-string | Telephone number sent to the dialing device when it sees packets with the specified next-hop-address that matches the access lists defined. |
| :isdn-subaddress | (Optional) Subaddress number used for ISDN multipoint connections. |
[no] dialer map protocol next-hop-address name hostname
Use the dialer map name interface configuration command to configure a dialer rotary group to receive and take advantage of caller identification using CHAP. Use the no form of this command to delete a particular dialer map entry.
| protocol | Name of the protocol. |
| next-hop-address | Protocol address used to match against addresses to which packets are destined. |
| hostname | Name of the remote device (usually the host name). |
[no] dialer map protocol next-hop-address speed speed
Use the dialer map speed interface configuration command to set the dialer speed. Use the no form of this command to return to the default speed.
| protocol | Name of the protocol. |
| next-hop-address | Protocol address used to match against addresses to which packets are destined. |
| speed | Dialer speed. It can be either 56 (for 56 kbps) or 64 (for 64 kbps). The default is 64 kbps. |
dialer priority n
no dialer priority
To set the priority of an interface in a dialer rotary group use the dialer priority interface configuration command. Use the no form of the command to revert to the default setting.
| n | Specifies the priority of an interface in a dialer rotary group; the highest number indicates the highest priority. A number from 0 to 255. The default value is 0. |
dialer rotary-group number
Use the dialer rotary-group interface configuration command to include an interface in a dialer rotary group.
| number | Number of the dialer interface in whose rotary group you want this interface included. An integer that you select that indicates the dialer rotary group; defined by the interface dialer command. A number from 0 to 255. |
dialer string dial-string
no dialer string
Use the dialer string interface configuration command to specify the string (telephone number) to be called for interfaces calling a single site. Use the no form of this command to delete the dialer string specified for the interface.
| dial-string | String of characters to be sent to a DCE |
dialer wait-for-carrier-time seconds
no dialer wait-for-carrier-time
Use the dialer wait-for-carrier-time interface configuration command to specify how long to wait for a carrier. Use the no form of this command to reset the carrier wait time value to the default.
| seconds | Number of seconds that the interface waits for the carrier to come up when a call is placed. Acceptable values are positive, nonzero integers. The default is 30 seconds. |
dialer-group group-number
no dialer-group
To control access, use the dialer-group interface configuration command. To remove an interface from the specified dialer access group, use the no form of this command.
| group-number | Number of the dialer access group to which the specific interface belongs. This access group is defined using the dialer-list command. Acceptable values are nonzero, positive integers between 1 and 10. |
[no] dialer-list dialer-group list access-list-number
Use the dialer-list list global configuration command to group access lists. Use the no form of this command to disable automatic dialing.
| dialer-group | Specifies the number of a dialer access group identified in any dialer-group interface configuration command. |
| access-list-number | Specifies the access list number specified in any IP Service Access Point or Novell IPX access lists including Novell IPX extended Service Advertisement Protocol (SAP) access lists, and bridging type. See the supported access list types and numbers table for this command in the Router Products Command Reference publication. |
[no] dialer-list dialer-group protocol protocol-name {permit | deny}
To control automatic dialing by a protocol name, use the dialer-list protocol global configuration command. Use the no form of this command to disable automatic dialing.
| dialer-group | Number of a dialer access group identified in any dialer access group interface configuration command. |
| protocol-name | Keyword for one of the supported protocols.See the supported protocols table for this command in the Router Products Command Reference publication. |
| permit | (Optional) Permits access to an entire protocol. |
| deny | (Optional) Denies access to an entire protocol.
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encapsulation ppp
Use the encapsulation ppp interface configuration command to configure Point-to-Point Protocol (PPP) encapsulation.
interface dialer number
Use the interface dialer global configuration command to define a dialer rotary group.
| number | Number of the dialer rotary group. It can be number in the range 0 through 255. |
[no] isdn answer1 [called-party-number] : [subaddress]
To have the router verify a called-party number or subaddress number in the incoming setup message for ISDN BRI calls when the number is delivered by the switch, use the isdn answer1 interface configuration command. To remove the verification request, use the no form of this command.
| called-party-number | (Optional) Telephone number of the called party. At least one of the called-party-number or subaddress must be specified. |
| : | Separates the called-party number from the subaddress. Omit unless you specify the subaddress. |
| subaddress | (Optional) Subaddress number, 20 or fewer characters long, used for ISDN multipoint connections. At least one of the called-party-number or subaddress must be specified. |
[no] isdn answer2 [called-party-number] : [subaddress]
To have the router verify an additional called-party number or subaddress number in the incoming setup message for ISDN BRI calls when the number is delivered by the switch, use the isdn answer2 interface configuration command. To remove the verification request, use the no form of this command.
| called-party-number | (Optional) Telephone number of the called party. At least one of the called-party-number or subaddress must be specified. |
| : | Separates the called-party number from the subaddress. Omit unless you specify the subaddress. |
| subaddress | (Optional) Subaddress number, 20 or fewer characters long, used for ISDN multipoint connections. At least one of the called-party-number or subaddress must be specified. |
isdn calling-number calling-number
no isdn calling number
To configure an Australian basic-ts013 ISDN BRI interface to present the number of the device making the outgoing call, use the isdn calling-number interface configuration command. To remove a previously configured calling number, use the no form of this command.
| calling-number | Number of the device making the outgoing call; only one entry is allowed and it is limited to 16 digits. |
ppp authentication chap [if-needed]
no ppp authentication chap
Use the ppp authentication chap interface configuration command to enable Challenge Handshake Authentication Protocol (CHAP) on a serial interface. Use the no form of this command to disable this feature.
| if-needed | (Optional) CHAP authentication is not done on this line if the user has already authenticated. |
ppp authentication pap [if-needed]
no ppp authentication pap
To enable Password Authentication Protocol (PAP) on a serial interface, use the ppp authentication pap interface configuration command. To disable this encapsulation, use the no form of this command.
| if-needed | (Optional) PAP authentication is not done on this line if the user has already authenticated. |
script dialer regexp
no script dialer
To specify a default modem chat script, use the script dialer line configuration command. Use the no form of this command to disable this feature.
| regexp | Specifies the set of modem scripts that might be executed. The first script that matches the argument regexp will be used. |
show dialer [interface type number]
To obtain a general diagnostic display for serial interfaces configured for DDR, use the show dialer EXEC command.
| interface | (Optional) Information for only the interface specified by the arguments type and number is to be displayed. |
| type | (Optional) Interface type. |
| number | (Optional) Interface unit number. |
username name password secret
Use the username password command to specify the password to be used in Challenge Handshake Authentication Protocol (CHAP) caller identification and Password Authentication Protocol (PAP).
| name | Host name, server name, user ID, or command name. |
| password | Possibly an encrypted password for this username. |
| secret | For CHAP authentication: specifies the secret for the local router or the remote device. The secret is encrypted when it is stored on the local router. This prevents the secret from being stolen. The secret can consist of any string of up to 11 printable ASCII characters. There is no limit to the number of username/password combinations that can be specified, allowing any number of remote devices to be authenticated. |
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