PDF(437.8 KB) View with Adobe Reader on a variety of devices
Updated:June 3, 2016
Bias-Free Language
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
Configuring Cisco G.SHDSL HWICs in Cisco Access Routers
First Published: December 23, 2006 OL-11079-01
Last Updated: July 6, 2009
This document describes how to configure Cisco G.SHDSL high-speed WAN interface cards (HWICs). Cisco G.SHDSL HWICs connect Cisco access routers with central office digital subscriber line access multiplexer (DSLAMs) and provide as many as four lines of G.SHDSL (ITU-T 991.2) connectivity.
Finding Support Information for Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.
Cisco G.SHDSL HWICs support up to four pairs of digital subscriber lines (DSL): two inverse multiplexing over ATM (IMA) lines, and two ATM segmentation and reassembly (SAR) lines. The four DSL pairs are bundled in groups and configured in the Cisco IOS command-line interface (CLI) by using the dsl-group command.
G.SHDSL HWICs support the following DSL groups:
Inverse Multiplexing over ATM (IMA) groups—1- 4 DSL pairs
Multi-Pair Operation (M-Pair) groups—2 or more DSL pairs
Cisco G.SHDSL HWICs are available in two variations:
The Cisco HWIC-2SHDSL (Figure 1) provides two lines of connectivity through one RJ-11 connector. It supports 1-Pair groups or 2-Pair groups.
Figure 1 Cisco HWIC-2SHDSL Faceplate
The Cisco HWIC-4SHDSL (Figure 2) provides four lines of connectivity through one RJ-45 connector. It combines four lines of data into one line or two lines with either inverse multiplexing over ATM (IMA) groups or M-pair groups, and it supports 1-Pair groups or 2-Pair groups.
Figure 2 Cisco HWIC-4SHDSL Faceplate
Note The Cisco HWIC-2SHDSL provides support for the Dying Gasp feature; however, the Cisco HWIC-4SHDSL does not provide support for this feature. The term dying gasp refers to power status as defined in ITU-T standard G.991.2, section 7.1.2.5.3.
Cisco HWIC-2SHDSL—Use a standard RJ-11 straight-through cable to establish connection between the HWIC and a network device.
Cisco HWIC-4SHDSL—Use a standard RJ-45 straight-through cable to establish connection between the HWIC and a network device.
Figure 3 shows the RJ-45 pin assignment. Table 1 identifies the RJ-45 signal assignment by pin.
Caution
Inserting an RJ-11 connector into the Cisco HWIC-4SHDSL port may deform pins 1 and 8, which may prevent solid contact between the connector and the plug in subsequent connections. If solid contact is prevented, line -1 tip and line -3 ring will not work properly.
Figure 3 RJ-45 Pin Assignment
Table 1 RJ-45 Signal Assignment by Pin
Pin
Signal
1
Line 1 tip
2
Line 1 ring
3
Line 2 tip
4
Line 0 tip
5
Line 0 ring
6
Line 2 ring
7
Line 3 tip
8
Line 3 ring
To connect the Cisco HWIC-4SHDSLwith a DSLAM that supports two or four RJ-11 connections, modify the standard RJ-45 cable, using one of the following diagrams as applicable:
Figure 4 shows how to modify the cable and connect the Cisco HWIC-4SHDSL with a DSLAM that supports four RJ-11 cable connections.
Figure 5 shows how to modify the cable and connect the Cisco HWIC-4SHDSL with a DSLAM that supports two RJ-11 cable connections.
Figure 4 Standard RJ-45 Connector to Four Standard RJ-11 Connectors
Figure 5 Standard RJ-45 Connector to Two Standard RJ-11 Connectors
Use the dsl-group auto command to automatically assign the Central Office (CO) configuration to an ATM dsl-group on the Customer Premise Equipment (CPE), which has either Cisco HWIC-4SHDSL or HWIC-2SHDSL installed on the router.
Note Automatic configuration is not supported on IMA groups.
Automatic configuration is limited to one DSL group and ATM interface. Once a group is automatically configured, no other group can be created. All manually created groups must be deleted before creating an automatic configuration group.
When the CO is running more than one configuration, the CPE will select the configuration based on the following priority: 1. M-PAIR 2. 4-WIRE 3. 2-WIRE
When the CO is running more than one configuration of the same type, the CPE will select the configuration with link 0.
When the CPE is configured in auto mode, the line coding and annex settings will display either actual or superset of actual coding and annex assigned.
SUMMARY STEPS
1. dsl-group auto
2. exit
DETAILED STEPS
Command
Purpose
Step 1
dsl-group auto
Example:
Router(config-controller)# dsl-group auto
Automatically assigns Central Office (CO) configuration to a dsl-group on the Customer Premise Equipment (CPE).
The following example use the G.SHDSL commands to configure an IMA group on a HWIC- 4SHDSL.
Router(config)# controller shdsl 0/2/0
Router(config-controller)# dsl-group 1 pairs 1 ima
Router(config-controller-dsl-group)#?
dsl-group configuration sub commands:
default Set a command to its defaults
exit Exit dsl-group sub commands
ima IMA sub commands
no Negate a command or set its defaults
shdsl Symmetric g.shdsl configuration
shutdown Shutdown this dsl-group
Router(config-controller-dsl-group)# ima link add 2
Router(config-controller-dsl-group)# ima group minimum-links 2
Router(config-controller-dsl-group)# ima group clock-mode ?
ctc Common Transmit Clock configuration
itc Independent Transmit Clock configuration
Router(config-controller-dsl-group)# ima group clock-mode ctc ?
Router(config-controller-dsl-group)# shdsl annex a
Router(config-controller-dsl-group)# shdsl rate auto
Router(config-controller-dsl-group)# exit
Router(config-controller)# exit
Configuring M-Pair Groups
Use the Cisco IOS CLI on the router in global configuration mode to configure an M-Pair group on the Cisco HWIC-4SHDSL.
Note To ensure a successful M-Pair group configuration, confirm that the central office (CO) network equipment that is connected with the Cisco HWIC-4SHDSL supports M-Pair bonding.
SUMMARY STEPS
1. controller shdsl
2. dsl-group
3. shdsl annex
4. shdsl rate
5. exit
6. exit
DETAILED STEPS
Command
Purpose
Step 1
controller shdsl slot number/subslot number/0
Example:
Router (config)# controller shdsl 0/2/0
Router (config-controller)#
Selects the controller and enters config-controller mode.
Enters ATM configuration mode for the ATM interface.
Step 3
Router(config-if)# ip-address IP-address
Assigns an IP address to the DSL ATM interface.
Step 4
Router(config-if)# atm ilmi-keepalive seconds
(Optional) Enables Integrated Local Management Interface (ILMI) keepalives.
If you enable ILMI keepalives without specifying the seconds, the default time interval is 3 seconds.
Step 5
Router(config-if)# pvc [name] vpi/vci
Enters atm-virtual-circuit (interface-atm-vc) configuration mode, and configures a new ATM permanent virtual circuit (PVC) by assigning a name (optional) and VPI/VCI numbers.
The default traffic shaping is UBR; the default encapsulation is AAL5+LLC/SNAP.
Step 6
Router(config-if-vc)# protocol ip IP-address
(Optional) Enables IP connectivity and create a point-to-point IP address for the virtual circuit (VC).
(Optional) Configures the PVC for real-time variable bit rate (VBR) traffic shaping.
Peak rate—Peak information rate (PIR)
Average rate—Average information rate (AIR)
Burst—Burst size in cells
Step 8
Router(config-if-vc)# exit
Exits from interface-atm-vc configuration mode.
Step 9
Router(config-if)# exit
Exits from ATM interface configuration mode.
Step 10
Router(config)# exit
Exits from global configuration mode.
Step 11
Router> show interface atm 0/0/0
Verifies the ATM interface configuration.
Step 12
Router clear interface atm 0/0/0
Clears statistics counters for the interface.
Troubleshooting Cisco G.SHDSL HWICs
To troubleshoot Cisco G.SHDSL HWICs, use the following new and published Cisco IOS commands. All other Cisco IOS software commands used with G.SHDSL HWICs are documented in the Cisco IOS command references. See the Select your Product page to access IOS command references, http://www.cisco.com/web/psa/products/index.html?c=268438303
SUMMARY STEPS
1. show controllers shdsl (new command)
2. show controllers atm
3. show ima interface
4. show ima interface atm
5. show atm pvc
DETAILED STEPS
Command
Purpose
Step 1
show controllers shdsl slot number/subslot number/0 [detailed | brief]
Example:
Router# show controllers shdsl 0/2/0 detailed
Displays the status of SHDSL controllers.
See the for more information.
Step 2
show controllers atm [slot/subslot number/imagroup-number]
Example:
Router#
show controllers atm 0/1/ima0
Displays information about the IMA group.
Step 3
show ima interface
Example:
Router#
show ima interface
Displays information about the IMA interface.
Step 4
show ima interface atm [slot/subslot number/imagroup-number] [detailed]
Example:
Router#
show ima interface atm 0/1/ima0
Displays detailed information about the IMA interface.
Step 5
show atm pvc
Example:
Router# show atm pvc
Displays information about ATM permanent virtual connections (PVCs) and traffic information.
Examples
The following example uses the show controllers shdsl command to display the controller status on a HWIC-4SHDSL.
show controllers shdsl
Router# show controllers shdsl 0/2/0 detailed
Controller SHDSL 0/2/0 is UP
Hardware is HWIC-4SHDSL, rev 2 on slot 0, hwic slot 2
Capabilities: IMA, M-pair, 2/4 wire, Annex A, B, F & G, CPE termination
Maximum observed diff delay 0ms, least delayed link -1
Running seconds 0
GTSM last changed 16:06:16 UTC Wed Oct 4 2006
IMA Group Current Counters (time elapsed 0 seconds):
0 Ne Failures, 0 Fe Failures, 0 Unavail Secs
IMA Group Total Counters (last 0 15 minute intervals):
0 Ne Failures, 0 Fe Failures, 0 Unavail Secs
Detailed IMA link Information:
Link Pair 0 is down
ifIndex 12, Group ifIndex 11, Row Status is active
Tx/Rx Lid -1/-1, relative delay 0ms
Ne Tx/Rx state notInGroup/notInGroup
Fe Tx/Rx state notInGroup/notInGroup
Ne Rx failure status is noFailure
Fe Rx failure status is noFailure
Rx test pattern 0x0, test procedure disabled
IMA Link Current Counters (time elapsed 0 seconds):
0 Ima Violations, 0 Oif Anomalies
0 Ne Severely Err Secs, 0 Fe Severely Err Secs
0 Ne Unavail Secs, 0 Fe Unavail Secs
0 Ne Tx Unusable Secs, 0 Ne Rx Unusable Secs
0 Fe Tx Unusable Secs, 0 Fe Rx Unusable Secs
0 Ne Tx Failures, 0 Ne Rx Failures
0 Fe Tx Failures, 0 Fe Rx Failures
IMA Link Total Counters (last 0 15 minute intervals):
0 Ima Violations, 0 Oif Anomalies
0 Ne Severely Err Secs, 0 Fe Severely Err Secs
0 Ne Unavail Secs, 0 Fe Unavail Secs
0 Ne Tx Unusable Secs, 0 Ne Rx Unusable Secs
0 Fe Tx Unusable Secs, 0 Fe Rx Unusable Secs
0 Ne Tx Failures, 0 Ne Rx Failures
0 Fe Tx Failures, 0 Fe Rx Failures
Link Pair 1 is down
ifIndex 13, Group ifIndex 11, Row Status is active
Tx/Rx Lid -1/-1, relative delay 0ms
Ne Tx/Rx state notInGroup/notInGroup
Fe Tx/Rx state notInGroup/notInGroup
Ne Rx failure status is noFailure
Fe Rx failure status is noFailure
Rx test pattern 0x0, test procedure disabled
IMA Link Current Counters (time elapsed 0 seconds):
0 Ima Violations, 0 Oif Anomalies
0 Ne Severely Err Secs, 0 Fe Severely Err Secs
0 Ne Unavail Secs, 0 Fe Unavail Secs
0 Ne Tx Unusable Secs, 0 Ne Rx Unusable Secs
0 Fe Tx Unusable Secs, 0 Fe Rx Unusable Secs
0 Ne Tx Failures, 0 Ne Rx Failures
0 Fe Tx Failures, 0 Fe Rx Failures
IMA Link Total Counters (last 0 15 minute intervals):
0 Ima Violations, 0 Oif Anomalies
0 Ne Severely Err Secs, 0 Fe Severely Err Secs
0 Ne Unavail Secs, 0 Fe Unavail Secs
0 Ne Tx Unusable Secs, 0 Ne Rx Unusable Secs
0 Fe Tx Unusable Secs, 0 Fe Rx Unusable Secs
0 Ne Tx Failures, 0 Ne Rx Failures
0 Fe Tx Failures, 0 Fe Rx Failures
The following example uses the show atm pvc command to display information about permanent virtual connections (PVCs) and traffic information.
show atm pvc
Router# show atm pvc
VCD / Peak Avg/Min Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells Sts
0/0/0 1 1 66 PVC SNAP UBR 4608 UP
0/0/0 2 1 77 PVC SNAP UBR 4608 UP
0/0/0 3 1 88 PVC SNAP UBR 4608 UP
0/1/0 1 1 44 PVC SNAP UBR 4608 UP
Router#
Command Reference
This section documents the following new and modified Cisco IOS commands. All other Cisco IOS software commands used with this HWIC are documented in the Cisco command references.
To configure a controller for single-pair high-bit-rate digital subscriber line (SHDSL) mode, use the controller shdsl command in global or controller configuration mode.
Cisco HWIC-4SHDSL and HWIC-2SHDSL
controller shdsl slot number/subslot number/port number
Cisco IAD2420 Series
controller shdsl number
Syntax Description
number
Controller number. The valid controller number is 0.
slot number
Defines the slot on the router in which the high-speed WAN interface cards (HWIC) is installed.
subslot number
Defines the subslot on the router in which the HWIC is installed.
port number
Defines the port on the router in which the HWIC is installed. By default, Cisco HWIC-4SHDSL and HWIC-2SHDSL use port number 0.
Command Defaults
Controller number: 0
Command Modes
Cisco HWIC-4SHDSL and HWIC-2SHDSL
Global configuration
Controller configuration
Cisco IAD2420 Series
Global configuration
Command History
Release
Modification
11.3(5)AAA
This command was introduced.
12.2(8)T
This command was implemented on Cisco IAD2420 series IADs.
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router, and on the Cisco 2800 and 3800 series access routers.
Usage Guidelines
This command is used to configure the controller mode and the controller number.
Examples
Cisco HWIC-4SHDSL and HWIC-2SHDSL
The following example uses the controller shdsl command to configure a Cisco HWIC-4SHDSL installed in a Cisco access router, controller number 0, subslot 2, port number 0); the example enters controller configuration mode:
Router(config)# controller shdsl 0/2/0
Router(config-controller)#
Cisco IAD2420 Series
The following example uses the controller shdsl command to enter SHDSL controller mode on controller number 0; the example also configures ATM mode:
Router# controllershdsl 0
Router# mode atm
Related Commands
Command
Description
show controller shdsl
Displays the controller status and statistics.
dsl-group
To create and configure a digital subscriber line (DSL) group, and enter config-controller-dsl-group mode, or automatically configure an ATM group, use the dsl-group command in config-controller mode. To disable the DSL group, use the no form of this command.
dsl-group [{number pairs link number }| auto]
no dsl-group [{number pairs link number }| auto]
Syntax Description
number
Defines the dsl-group number. The dsl-group number can be one of the following numbers:
0
1
pairs
Defines the DSL wire pairs.
link number
Designates the pair’s link number. Link number options are limited to one of the following choices, based on the hardware interface and the desired DSL group.
HWIC-4SHDSL
IMA DSL Group
0
1
2
3
Any combination of the numbers 0,1,2,3
M-Pair DSL Group
0-1
0-2
0-3
2-Pair DSL Group
0-1
2-3
1-Pair DSL Group
0
1
2
3
HWIC-2SHDSL
DSL Group 0
0
1
0-1
DSL Group 1
1
auto
Automatically assigns the Central Office (CO) configuration to an ATM dsl-group on the Customer Premise Equipment (CPE).
Command Default
No DSL group is defined or automatically configured
Command Modes
Config controller
Config-controller-dsl-group
Command History
Release
Modification
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router and the Cisco 2800 and 3800 series access routers.
15.1(1)T
This command was modified to support automatic configuration of Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router and the Cisco 2800 and 3800 series access routers.
Usage Guidelines
From config-controller mode, use the dsl-group command to define the dsl group, and manually configure the DSL group from config-controller-dsl-group mode. Use the dsl-group auto command to automatically adopt the Central Office (CO) configuration on an ATM dsl-group.
Note Automatic configuration is not supported on IMA groups.
Automatic configuration is limited to only one DSL group and ATM interface. Once a group is automatically configured, no other group can be created. All manually created groups must be deleted before creating an automatic configuration group.
When the CO is running more than one configuration, the CPE will select the configuration based on the following priority: 1. M-PAIR 2. 4-WIRE 3. 2-WIRE
When the CO is running more than one configuration of the same type, the CPE will select the configuration with link 0.
Examples
The following example uses the dsl-group command to create an IMA-DSL group and enter config-controller-dsl-group mode:
Router(config-controller)# dsl-group 1 pairs 0-1 ima
Router(config-controller-dsl-group)#
Sep 14 13:15:40.285:%HWIC_SHDSL-5-DSLGROUP_UPDOWN: SHDSL 0/2/0 dsl-group(1) state changed to down.
Sep 14 13:15:42.285:%LINK-3-UPDOWN: Interface ATM0/2/IMA1, changed state to down
Sep 14 13:15:43.285:%LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/2/IMA1, changed state to down
The following example uses the dsl-group auto command to automatically adopt the Central Office (CO) configuration on an ATM group:
Router(config-controller)#dsl-group auto
Router(config-controller)#
*May 14 18:56:33.136: %HWIC_SHDSL-5-DSLGROUP_UPDOWN: SHDSL 0/0/0 dsl-group(0) state changed to down.
*May 14 18:56:35.136: %LINK-3-UPDOWN: Interface ATM0/0/0, changed state to down
*May 14 18:56:36.136: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/0/0,
changed state to down
Related Commands
Command
Description
controller shdsl
Configures a controller for SHDSL mode and enters config-controller mode.
ima group
Defines physical links as IMA group members.
ima group clock-mode
Sets the clock mode for an IMA group.
ima link
Defines physical links in an IMA group.
shdsl 4-wire mode enhanced
Defines the SHDSL to use enhanced mode in a 2-pair DSL group.
shdsl annex
Defines the SHDSL G.991.2 standard.
shdsl rate
Defines the SHDSL rate.
show controller shdsl
Displays the status of the controller that is configured for SHDSL mode.
ima-group
To define inverse multiplexing over ATM (IMA) groups, use the ima-group command in interface configuration mode for Cisco 7100, 7200, and 7500 series routers; use the command in config controller mode for the Cisco HWIC-4SHDSL. To remove the group, use the no form of this command.
Cisco HWIC-4SHDSL
ima-group [ shutdown | minimum-links number | clock-mode ]
Cisco 7100, 7200, and 7500 series routers
ima-group group-number
no ima-group group-number
Syntax Description
clock-mode
Sets the clock mode for an IMA group
group-number
Specifies an IMA group number from 0 to 3. IMA groups can span multiple ports on a port adapter but cannot span port adapters.
minimum-links number
Defines the number of minimum links that must remain in operation for an IMA group to remain in service.
shutdown
Shuts down physical links in an IMA group.
Command Defaults
No IMA groups are defined.
Command Modes
Cisco HWIC-4SHDSL
Config controller
Config controller DSL group
Cisco 7100, 7200, and 7500 series routers
Interface configuration
Command History
Release
Modification
12.0(5)XK
This command was introduced on Cisco 2600 and 3600 series routers.
12.0(5)T
This command was integrated into Cisco IOS Release 12.0(5)T.
12.0(5)XE
Support for Cisco 7200 and 7500 series routers was added.
12.0(7)XE1
Support for Cisco 7100 series routers was added.
12.1(5)T
Support for Cisco 7100, 7200, and 7500 series routers was added
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.4 (11)XJ
This command was integrated into Cisco IOS Release 12.4 (11)XJ.
12.2SX
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
Usage Guidelines
For usage guidelines for using the clock-mode keyword, see the command reference page for the ima group clock-mode command.
Cisco HWIC-4SHDSL
Use the dsl-group command with the optional keyword ima to create an IMA DSL group and to enter config-controller-dsl-group mode. Use the ima group command to define the links as IMA group members.
Cisco 7100, 7200, and 7500 series routers
When the configuration is first performed or when the group number is changed, the interface is automatically disabled, moved to the new group, and then enabled.
Examples
Cisco HWIC-4SHDSL
The following example uses the dsl-group command to create an IMA group and enter config-controller-dsl-group mode on the Cisco HWIC-4SHDSL in a Cisco access router:
Router(config-controller)# dsl-group 1 pairs 0-1 ima
Router(config-controller-dsl-group)#
Sep 26 11:43:55.798: %HWIC_SHDSL-5-DSLGROUP_UPDOWN: SHDSL 0/2/0 dsl-group(1) state changed to down.
Sep 26 11:43:57.798: %LINK-3-UPDOWN: Interface ATM0/2/IMA1, changed state to down
Sep 26 11:43:58.798: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/2/IMA1, changed state to down
Router (config-controller-dsl-group)# ?
dsl-group configuration sub commands:
default Set a command to its defaults
exit Exit dsl-group sub commands
ima IMA sub commands
no Negate a command or set its defaults
shdsl Symmetric g.shdsl configuration
shutdown Shutdown this dsl-group
Router (config-controller-dsl-group)# ima ?
group IMA group configuration
link IMA link configuration
Router (config-controller-dsl-group)# ima group ?
clock-mode IMA group clock mode configuration
minimum-links Minimum number of active links for group UP
shutdown IMA group shutdown
Cisco 7100, 7200, and 7500 series routers
The following example assigns interface 1 on the ATM module in slot 0 to a member of IMA group 2:
interface atm0/1
ima-group 2
Related Commands
Command
Description
ima group clock-mode
Sets the clock mode for an IMA group.
ima link
Defines physical links for an IMA group.
interface atm
Configures an ATM interface.
interface atm ima
Configures an ATM IMA group.
show ima interface atm
Provides information about all configured IMA groups or a specific IMA group.
shutdown (interface)
Disables an interface.
ima group clock-mode
To set the clock mode for an inverse multiplexing over ATM (IMA) group, use the ima group clock-mode command in config controller DSL group mode. To disable the current configuration, use the no form of this command.
ima group clock-mode { ctc | itc }
no ima group clock-mode
Syntax Description
ctc
Sets the transmit clocks for all the links in the IMA group to be derived from the same source.
itc
Sets the transmit clock source for at least one link in the IMA group to be different from the clock source used by the other links.
Command Defaults
ctc mode
Command Modes
Config controller DSL group
Command History
Release
Modification
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router, and Cisco 2800 and 3800 series access routers.
Usage Guidelines
This command controls the clock for the IMA group as a whole. If all the links in the group share a clock source, use the ctc keyword. If all the links use different clock sources, use the itc keyword.
When the ctc keyword is set, the clock source ATM interface configuration command for the common link determines clocking for all the links in the group.When the itc keyword is set, the clock source ATM interface configuration command is used under each interface to determine clocking individually.
Because the system automatically chooses a replacement for the common link when it fails, any link in an IMA group can potentially provide the recovered transmit clock. For this reason, even when the common keyword is set with a specific link stipulated by the port value, you should use the ATM interface configuration clock source command to make sure that the clock source is configured correctly on each interface in the IMA group.
Examples
The following example uses the ima group clock-mode command to configure the clock source for an IMA group:
Router(config-controller-dsl-group)# ima group clock-mode ?
ctc Common Transmit Clock configuration
itc Independent Transmit Clock configuration
Router(config-controller-dsl-group)# ima group clock-mode ctc ?
<cr>
Related Commands
Command
Description
clock source
Configures the clock source of a DS1 link.
interface atm ima
Configures an ATM IMA group.
show ima interface atm
Provides information about all configured IMA groups or a specific IMA group.
ima link
To modify an inverse multiplexing over ATM (IMA) group link, use the ima link command in config controller DSL group mode.
ima link { add | delete | shutdown} number
Syntax Description
add
Adds a link to an IMA group.
delete
Deletes a link from an IMA group. The last link cannot be deleted from an IMA group.
shutdown
Shuts down a link in an IMA group.
number
Defines the IMA link number.
Command Defaults
The default value is a minimum of 1 link.
Command Modes
Config controller DSL group
Command History
Release
Modification
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSLrunning on the Cisco 1841 router and on the Cisco 2800 and 3800 series access routers.
Usage Guidelines
Use the dsl-group command with the optional keyword, ima, to create an IMA DSL group. Then, use the ima link command to define the links in the IMA group.
Examples
The following example uses the ima link command to modify an IMA DSL group on a Cisco HWIC-4SHDSL that is installed on a Cisco access router:
Router(config-controller-dsl-group)# ima link ?
add Add a link to the IMA group
delete Delete a link from the IMA group
shutdown Shutdown a link in the IMA group
Router(config-controller-dsl-group)# ima link add ?
<0-3> Link pair number
Router(config-controller-dsl-group)# ima link add 2 ?
<cr>
Related Commands
Command
Description
interface atm ima
Configures an ATM IMA group.
show ima interface atm
Provides information about all configured IMA groups or a specific IMA group.
shutdown (interface)
Disables an interface.
shdsl 4-wire mode
To define the single-pair high-bit-rate digital subscriber line (SHDSL) to use enhanced mode in a 2-pair digital subscriber line (DSL) group, use the shdsl 4-wire mode command in config controller DSL group mode. To disable shdsl 4-wire mode, use the no form of this command.
shdsl 4-wire mode enhanced
no shdsl 4-wire mode enhanced
Syntax Description
enhanced
Specifies both pairs in a 2-Pair DSL group to operate in a symmetric 4-wire configuration.
Command Default
Standard mode is the default setting.
Command Modes
Config controller DSL group
Config controller
Command History
Release
Modification
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router and on the Cisco 2800 and 3800 series access routers.
15.2(2)T
This command was supported on the config controller configuration mode.
Usage Guidelines
Use the dsl-group command to create a 2-Pair DSL group and enter config controller DSL group mode. Use the shdsl 4-wire mode enhanced command to define both pairs to operate in a symmetric 4-wire configuration.
Examples
The following example uses the shdsl 4-wire mode enhanced command to configure both pairs in a 2-Pair DSL group to operate in enhanced mode on the Cisco HWIC-4SHDSL:
Creates a DSL group and enters config controller DSL group mode.
shdsl annex
Defines the G.991.2 standard for a DSL group.
shdsl rate
Defines the SHDSL rate.
shdsl annex
To define the single-pair high-bit-rate digital subscriber line (SHDSL) G.991.2 standard, use the shdsl annex command in config controller DSL group mode.
shdsl annex {standard }
Syntax Description
standard
Defines the standard for the selected type of DSL group.
IMA Group
A
A-B
B
M-PAIR Group
A
A-B
B
F {coding 16 | 32}
F-G {coding 16 | 32}
G {coding 16 | 32}
1-PAIR and 2-PAIR Group
A
A-B
B
F {coding 16 | 32}
F-G {coding 16 | 32}
G {coding 16 | 32}
Command Default
SHDSL annex B
Command Modes
Config controller DSL group
Command History
Release
Modification
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router and on the Cisco 2800 and 3800 series access routers.
Usage Guidelines
Use the dsl-group command to create a DSL group, and then use the shdsl annex command to define the G.991.2 standard for the DSL group.
The shdsl annex coding <16/32 TCPAM> command does not influence the Customer Premise Equipment (CPE) to choose the particular coding 16/32. The command allows you to set the data rate range that is to be supported.
Use the shdsl rate command to set the exact data rate. CPE will automatically choose the TCPAM configuration used by CO/DSLAM.
The show controller shdsl x/y/z command displays the same TCPAM coding information which you provided using the shdsl annex coding <16/32 TCPAM> command. The command does not display the actual coding used for Line Training.
Examples
The following example uses the shdsl annex command to define the annex standard for a 2-Pair DSL group on a Cisco HWIC-4SHDSL:
Router(config-controller-dsl-group)# shdsl annex g ?
coding 16-TCPAM or 32-TCPAM line coding
Router(config-controller-dsl-group)# shdsl annex g coding ?
16-TCPAM 16-TCPAM line coding
32-TCPAM 32-TCPAM line coding
Router(config-controller-dsl-group)# shdsl annex g coding 16 ?
<cr>
Related Commands
Command
Description
dsl-group
Creates a DSL group and enters config controller DSL group mode.
shdsl rate
Defines the SHDSL rate.
shdsl rate
To define the single-pair high-bit-rate digital subscriber line (SHDSL) rate, use the shdsl rate command in config-controller-dsl-group mode.
shdsl rate {number | auto}
Syntax Description
number
Defines the SHDSL rate for the digital subscriber line (DSL) group.
DSL Group with 1 Pair
Annex A & B—192-2304 kbps
Annex F & G (32 TC-PAM)—768-5696 kbps
Annex F & G (16 TC-PAM)—2304-3840 kbps
DSL Group with 2 Pairs
Annex A & B—384-4608 kbps
Annex F & G (32 TC-PAM)—1536-11392 kbps
Annex F & G (16 TC-PAM)— 4608-7680 kbps
DSL Group with 3 Pairs
Annex A & B—576-6912 kbps
Annex F & G (32 TC-PAM)—2304-12288 kbps
Annex F & G (16 TC-PAM)— 6912-11520 kbps
DSL Group with 4 Pairs
Annex A & B—768-9216 kbps
Annex F & G (32 TC-PAM)—3072-16384 kbps
Annex F & G (16 TC-PAM)— 9216-15360 kbps
auto
Sets this SHDSL rate to automatic mode.
Command Default
The command default is the maximum annex rate for the selected DSL group.
Command Modes
Config controller DSL group
Command History
Release
Modification
12.4(15)T
This command was introduced for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router and on the Cisco 2800 and 3800 series access routers.
Usage Guidelines
Use the dsl-group command to create a DSL group, and then use the shdsl annex command to define the G.991.2 standard for the newly created DSL group. Define the SHDSL line rate with the shdsl rate command.
Examples
The following example defines the SHDSL line rate for DSL group 1, pairs 0-1 (2 pairs) on a Cisco HWIC-4SHDSL:
Router(config-controller)# dsl-group 1 pairs 0-1 ima
Router(config-controller-dsl-group)#
Sep 22 14:53:46.481: %HWIC_SHDSL-5-DSLGROUP_UPDOWN: SHDSL 0/2/0 dsl-group(1) state changed to down.
Sep 22 14:53:48.481: %LINK-3-UPDOWN: Interface ATM0/2/IMA1, changed state to down
Sep 22 14:53:49.481: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/2/IMA1, changed state to down
Router(config-controller-dsl-group)# shdsl annex b ?
<cr>
Router(config-controller-dsl-group)# shdsl rate auto
<384-4608> DSL Rate in kbps(line will train at the rate + 16kbps overhead)
auto auto rate mode
Related Commands
Command
Description
dsl-group
Creates a DSL group and enters config controller DSL group mode.
shdsl annex
Defines the G.991.2 standard for a DSL group.
show controllers shdsl
To display the status of the controller configured for single-pair high-bit-rate digital subscriber line (SHDSL) mode, use the show controllers shdsl command in privileged EXEC mode.
Cisco HWIC-4SHDSL and HWIC-2SHDSL
show controllers shdsl slot number/subslot number/port number {brief | detailed}
Cisco IAD2420
show controller shdsl number
Syntax Description
brief
Provides a summary of the controller’s status.
detailed
Provides a detailed report of the controller’s status.
number
SHDSL controller number. The valid controller number for SHDSL mode is 0.
slot number
Identifies the slot on the router in which the HWIC is installed.
subslot number
Identifies the subslot on the router in which the HWIC is installed.
port number
Identifies the port on the router in which the HWIC is installed. By default, the Cisco HWIC-4SHDSL and HWIC-2SHDSL use port number 0.
Command Defaults
Controller number
Command Modes
Privileged EXEC
Command History
Release
Modification
12.4(15)T
This command was updated for the Cisco HWIC-4SHDSL and HWIC-2SHDSL running on the Cisco 1841 router and on the Cisco 2800 and 3800 series access routers.
12.2(8)T
This command was introduced on Cisco IAD2420 series.
Usage Guidelines
This command is used to display the controller mode, the controller number, and associated statistics.
Examples
Cisco HWIC-4SHDSL and HWIC-2SHDSL
The following example displays the status of a Cisco HWIC-4SHDSL controller in slot 0, subslot 2, port 0 on a Cisco access router:
Router# show controllers shdsl 0/2/0 brief
Controller SHDSL 0/2/0 is UP
Hardware is HWIC-4SHDSL, rev 2 on slot 0, hwic slot 2
Capabilities: IMA, M-pair, 2/4 wire, Annex A, B, F & G, CPE termination
Configured/active num links: 2/0, bit map: 0x3/0x0
Line termination: CPE, line mode: M-pair, Annex-B, PMMS disabled
Line coding: 16-TCPAM, configured/actual rate: 4608/0 kbps
SHDSL wire-pair (0) is in DSL DOWN state
SHDSL wire-pair (1) is in DSL config state
Router#
Cisco IAD2420 Series
The following example displays the status of the controller that is configured for SHDSL mode on a Cisco IAD2420 series IAD:
Router# show controller shdsl 0
SHDSL 0 controller UP
SLOT 3: Globespan xDSL controller chipset
Frame mode: Serial ATM
Configured Line rate: 1160Kbps
Line Re-activated 0 times after system bootup
LOSW Defect alarm: None
CRC per second alarm: None
Line termination: CPE
FPGA Revision: 9
Related Commands
Command
Description
controller shdsl 0
Configures the controller status and the controller number.
Additional References
The following references provide links to related topics, such as the Cisco IOS software resource center, interface card documentation, and additional hardware documentation.
The Cisco Technical Support & Documentation website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.
Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.