Octal-Port G.SHDSL SHTU-C Line Card

12.1(7)DA2

This line card was introduced.

12.2(7)DA

The rate adaptive mode, annex auto, embedded operations channel, and network timing reference features were added.

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Step 1 

Associate the 8xG.SHDSL line card with the specified slot.

Step 2 

Create and name the DSL profile.

Step 3 

Return to the global configuration prompt.

Step 4 

Enter interface configuration mode on the port where you will associate the austin dsl profile.

Repeat this process on each port that you wish to associate with a dsl profile.

Step 5 

Associate the dsl profile austin with atm interface 1/1.

Step 6 

Return to the global configuration prompt.

Step 7 

Enter DSL profile configuration mode.

Step 8 

Configure a bit rate of 2312 kbps.

Step 9 

Configure signal-to-noise ratio (SNR) margin values for the DSL profile.

Note   Cisco suggests that you use the default configuration shown in this step.

Step 10 

Set the DSL mask type as symmetric.

Note   In future software releases, asymmetric masks will be supported for certain bit rates.

Step 11 

Or

Configure shdsl annex type A.


Configure shdsl annex type B.

Step 1 

Create and name the DSL profile.

Step 2 

Return to the global configuration prompt.

Step 3 

Enter interface configuration mode on the port where you will associate the austin dsl profile.

Repeat this process on each port that you want to associate with a dsl profile.

Step 4 

Associate the dsl profile austin with atm interface 1/1.

Step 1 

Enter DSL profile configuration mode.

Step 2 

Configure a bit rate of 2312 kbps.

Step 3 

Configure SNR margin values for the DSL profile.

Note   Cisco suggests that you use the default configuration shown in this step.

Step 4 

Set the DSL mask type as symmetric.

Note   In future software releases, asymmetric masks will be supported for certain bit rates.

Step 5 

Or

Or

Configure shdsl annex type A.


Configure shdsl annex type B.


Configure shdsl annex type auto.

Step 6 

Configure the training rate as fixed or adaptive.

Use the show dsl status command to display basic information about the DSL link, including port status and cards detected.

Use the show dsl status shdsl command to determine the administrative and operational status of each shdsl port. Nothing is displayed for slots that are empty and unprovisioned. This command also provides information on SNR, header error control (HEC) errors, line rates, receiver gain, and shdsl cards detected.

Use the show facility-alarm status command to display all of the current major and minor alarms and the user-configurable alarm thresholds for temperature. After an alarm condition is indicated (by LEDs or bells), use the show facility-alarm status command to determine the cause of the alarm.

Use the show hardware command to show information on each of the slots in your chassis. The command output tells whether a line card and fan trays arepresent.

Use the show dsl interface command to view the status or results of a line test or to get information on port status, alarms, configured and actual transmission rates, and transmission errors.

72

Symmetric

A or B

Fixed

136

Symmetric

A or B

Fixed

200

Symmetric

A or B

Fixed, adaptive

264

Symmetric

A or B

Fixed, adaptive

392

Symmetric

A or B

Fixed, adaptive

520

Symmetric

A or B

Fixed, adaptive

776

Symmetric

A or B

Fixed, adaptive

1032

Symmetric

A or B

Fixed, adaptive

1160

Symmetric

A or B

Fixed, adaptive

1544

Symmetric

A or B

Fixed, adaptive

2056

Symmetric

A or B

Fixed, adaptive

2312

Symmetric

A or B

Fixed, adaptive

a

Configures annex type a on the selected DSL profile.

b

Configures annex type b on the selected DSL profile.

auto

Allows the CO to detect and then select the CPE side annex type during training.

12.1(7)DA2

This command was introduced.

12.2(7)DA

The Auto Annex feature was added to the command.

shdsl set bitrate rate masktype symmetric annex {a | b | auto} ratemode {fixed | adaptive}

Configures the bit rate, mask type, annex type, and ratemode on a DSL profile.

shdsl margin {min dB | threshold dB | target dB}

Configures margin values, in decibels, on a DSL profile.

rate

Specifies the maximum symmetrical data transmission rate for a G.SHDSL link.

Valid rates are 72, 136, 200, 264, 392, 520, 776, 1032, 1160, 1544, 2056, and 2312 kbps.

12.1(7)DA2

This command was introduced.

shdsl set bitrate rate masktype symmetric annex {a | b | auto} ratemode {fixed | adaptive}

Configures the bit rate, mask type, annex type, and ratemode on a DSL profile.

shdsl margin {min dB | threshold dB | target dB}

Configures margin values, in decibels, on a DSL profile.

target

In rate adaptive mode the target margin determines the amount of margin required before the line will train. If the line cannot achieve the target margin it will attempt to train at a lower rate. The line will continue to lower the rate until it finds a line rate that will support the target margin.

dB

0 to 15 is the configurable range of values in decibels.

min

Configures the minimum SNR margin for the selected DSL profile. If the SNR falls below the configured value after the line has been trained for 5 seconds, the line drops and attempts to retrain.

dB

0 to 31 is the configurable range of values in decibels.

threshold

Configures the minimum SNR threshold margin. If the SNR margin falls below the configured value, an SNR margin threshold alarm is issued.

dB

0 to 31 is the configurable range of values in decibels.

12.1(7)DA2

This command was introduced.

shdsl set bitrate rate masktype symmetric annex {a | b | auto} ratemode {fixed | adaptive}

Configures the bit rate, mask type, annex type, and ratemode on a DSL profile.

symmetric

Configures symmetric mask type in the selected DSL profile.

12.1(7)DA2

This command was introduced.

shdsl set bitrate rate masktype symmetric annex {a | b | auto} ratemode {fixed | adaptive}

Configures the bit rate, mask type, annex type, and ratemode on a DSL profile.

shdsl margin {min dB | threshold dB | target dB}

Configures margin values, in decibels, on a DSL profile.

fixed

In fixed training mode, no rates are negotiated. The line rate selected is the line rate to which the port attempts to train. If the port is unable to attain that line rate, it does not train.

adaptive

In adaptive training mode, the rate is negotiated during training. If the line cannot train at the selected rate, the line trains at the next best rate. Rates are negotiated in 64 kbps decrements.

12.2(7)DA

This command was introduced.

shdsl annex {a | b}

Configures the annex type on a DSL profile.

shdsl bitrate rate

Configures the bit rate on a DSL profile.

shdsl masktype symmetric

Configures the mask type on a DSL profile.

shdsl margin {min dB | threshold dB | target dB}

Configures margin values, in decibels, on a DSL profile.

shdsl set bitrate rate masktype symmetric annex {a | b | auto} ratemode {fixed | adaptive}

Configures the bit rate, mask type, annex type, and ratemode on a DSL profile.

bitrate

Specifies the maximum symmetrical data transmission rate for a G.SHDSL link.

rate

Valid rates are 72, 136, 200, 264, 392, 520, 776, 1032, 1160, 1544, 2056, and 2312 kbps.

masktype

Configures the shdsl mask type for the selected DSL profile.

symmetric

Configures a symmetric mask type for the selected DSL profile.

annex

Configures the annex type for the selected DSL profile.

a

Configures Annex A for the selected DSL profile.

b

Configures Annex B for the selected DSL profile.

auto

Allows the CO to detect and then select the CPE side annex type during training.

ratemode

Configures the shdsl rate type for the selected DSL profile.

fixed

Configures a fixed training rate for the selected DSL profile.

adaptive

Configures an adaptive training rate for the selected DSL profile.

12.1(7)DA2

This command was introduced.

12.2(7)DA

The ratemode keyword was added.

shdsl annex {a | b | auto}

Configures the annex type on a DSL profile.

shdsl bitrate rate

Configures the bit rate on a DSL profile.

shdsl masktype symmetric

Configures the mask type on a DSL profile.

shdsl margin {min dB | threshold dB | target dB}

Configures margin values, in decibels, on a DSL profile.

shdsl ratemode {fixed | adaptive}

Configures the type of ratemode (fixed or adaptive) on a DSL profile.

12.1(7)DA2

This command was modified to provide G.SHDSL-specific feedback.

A

AAL5

ATM adaptation layer 5. This layer maps higher layer user data into ATM cells, making the data suitable for transport through the ATM network.

access identifier

See AID.

address mask

A bit mask used to select bits from an Internet address for subnet addressing. The mask is 32 bits long and selects the network portion of the Internet address and one or more bits of the local portion. Sometimes called subnet mask.

ADSL

asymmetric digital subscriber line. A digital subscriber line (DSL) technology in which the transmission of data from server to client is much faster than the transmission from the client to the server.

ADSL Transmission Unit—central office

See ATU-C.

ADSL Transmission Unit—remote

See ATU-R.

AID

access identifier.

AIS

alarm indication signal.

American National Standards Institute

See ANSI.

American Wire Gauge

See AWG.

ANSI

American National Standards Institute. An organization that develops standards for many things, only some having to do with computers. ANSI is a member of the International Standards Organization (ISO). See ISO.

asymmetric digital subscriber line

See ADSL.

asynchronous communications

A method of transmitting data in which each transmitted character is sent separately. The character has integral start and stop bits so that the character can be sent at an arbitrary time, and separate from any other character.

Asynchronous Transfer Mode

See ATM.

ATM

Asynchronous Transfer Mode. A cell-based data transfer technique in which channel demand determines packet allocation. ATM offers fast packet technology, real time, demand-led switching for efficient use of network resources.

ATM adaptation layer 5

See AAL5.

ATU-C

ADSL Transmission Unit—central office. Transmission unit installed in the carrier's central office, such as a line card, used to support ADSL service.

ATU-R

ADSL Transmission Unit—remote. Transmission unit installed at the customer's premises, such as a line card, used to support ADSL service.

authentication

A security feature that allows access to information to be granted on an individual basis.

autonegotiation

A procedure for adjusting line speeds and other communication parameters automatically between two computers during data transfer.

AWG

American Wire Gauge. The measurement of thickness of a wire.

D

DDTS

Cisco Distributed Defect Tracking System.

digital signal level 3

See DS3.

Distributed Defect Tracking System

See DDTS.

DS3

digital signal level 3. A framing specification used for transmitting digital signals at 44.736 Mbps on a T3 facility.

DSLAM

Digital Subscriber Line Access Multiplexer. A device that concentrates and multiplexes digital subscriber line signals at the telephone service provider location to the broadband wide area network. Replaces ADSLAM.

E

E1

A digital carrier that is used to transmit a formatted signal at 2.048 Mbps.

E3

A digital carrier that is used to transmit a formatted signal at 34.368 Mbps.

EEPROM

Electronically erasable programmable read-only memory. EPROM that can be erased using electrical signals applied to specific pins.

Embedded Operations Channel

An embedded operations channel (EOC) is a dedicated channel for network management and monitoring purposes.

F

frame

A packet of data as it is transmitted over a serial line. The term derives from character-oriented protocols that involve the addition of special start-of-frame header and end-of-frame trailer for packet identification and transmission.

FTP

File Transfer Protocol. The Internet protocol (and program) used to transfer files between hosts.

G

g.832 ADM

ITU-T framing standard that defines the mapping of ATM cells onto the physical medium.

gateway

A system which does translation from one native format to another. Examples include X.400 to/from RFC 822 electronic mail gateways. See router.

I

IMA

Inverse Multiplexing over ATM. Standard protocol defined by the ATM Forum in 1997.

IP

Internet Protocol. The network layer protocol for the Internet Protocol suite.

IP address

The 32-bit address assigned to hosts that want to participate in a TCP/IP Internet.

L

LCD

Loss of Cell Delineation

LODS

LOss Of Delay Synchronization

LOF

Loss Of Frame.

LOS

Loss Of Signal.

loopback

A diagnostic test that returns the transmitted signal to the sending device after it has passed through a network or across a particular link. The returned signal can then be compared to the transmitted one. The discrepancies between the two help to trace the fault. To locate a faulty piece of equipment, loopbacks can be repeated to eliminate satisfactory machines until the problem is found.

LOS

loss of signal.

M

Management Information Base

See MIB.

signal-to-noise ratio (SNR) margin

Represents the amount of increased received signal noise (in decibels) relative to the signal noise power level the unit is designed to tolerate without disconnecting from the network.

MIB

Management Information Base. A database of network performance information that can be accessed via a network management protocol, such as SNMP or CMIP (Common Management Information Protocol).

N

Network Timing Reference

Network timing reference. In DSL, NTR enables the DSLAM to provide clocking for network devices that reside beyond the CPE. The CPE must support NTR to enable this feature.

NI-2

A second generation network interface card.

O

OOF

Out Of Frame.

R

RADSL

rate adaptive digital subscriber line. A transmission technology that supports adaptive transmission rates through the use of intelligent DSL modems, which negotiate the line rate according to line conditions and profile specifications. Once the line rate is negotiated, the rate is locked when the line trains. RADSL supports both asymmetric and symmetric applications on a single twisted pair telephone line.

route

The path that network traffic takes from its source to its destination. The route a datagram follows can include many gateways and many physical networks. In the Internet, each datagram is routed separately.

router

A system responsible for making decisions about which of several paths network (or Internet) traffic will follow. To do this, it uses a routing protocol to gain information about the network and algorithms to choose the best route based on several criteria known as "routing metrics."

routing table

Information stored within a router that contains network path and status information. It is used to select the most appropriate route for information forwarding.

S

Simple Network Management Protocol

See SNMP.

slot

A numbered location within a chassis capable of housing a module.

SNMP

Simple Network Management Protocol. The network management protocol of choice for TCP/IP-based internets.

T

T3

A digital carrier that is used to transmit a DS3 formatted digital signal at 45 Mbps.

TCP

Transmission Control Protocol. The major transport protocol in the Internet suite of protocols. TCP provides reliable, connection-oriented full-duplex data transmission.

Telnet

The virtual terminal protocol in the Internet suite of protocols. Allows users of one host to log into a remote host and act as normal terminal users of that host.

TFTP

Trivial File Transfer Protocol. A simple file transfer protocol (a simplified version of FTP) that is often used to boot diskless workstations and other network devices such as routers over a network (typically a LAN). TFTP does not offer password security.

training

The procedure used by the ATU-C and ATU-R to establish an end-to-end ADSL connection.

training mode

A characteristic of a router that allows it to use RADSL technology to adjust its line speed according to noise conditions on the transmission line.

Transmission Control Protocol

See TCP.

Trivial File Transfer Protocol

See TFTP.

twisted pair

Two insulated copper wires twisted together with the twists or lays varied in length to reduce potential signal interference between the pairs.

U

UNI

User-Network Interface.

UNI signaling

User-Network Interface signaling for ATM communications.

upstream rate

The line rate for message or data transfer from the source machine to a destination machine on the network.

V

VC

virtual circuit. A logical circuit created to ensure reliable communication between two network devices. A virtual circuit is defined by a VPI/VCI pair, and can be either permanent (PVC) or switched (SVC). In ATM, a virtual circuit is called a virtual channel. Sometimes abbreviated VC. See also VPI.

virtual circuit

See VC.

VPI

virtual path identifier. An 8-bit field in the header of an ATM cell. The VPI, together with the VCI, is used to identify the next destination of a cell as it passes through the network.