Cisco IOS Dial Technologies Command Reference, Release 12.3 T
Dial Technologies Commands: channel through cpp

Table Of Contents

channel-group

chat-script

class (controller)

clear cot summary

clear counters (async)

clear counters line

clear dialer

clear dialer dnis

clear dialer sessions

clear dsip tracing

clear interface virtual-access

clear ip route download

clear line

clear line async-queue

clear modem

clear modem counters

clear modem log

clear modempool-counters

clear port

clear port log

clear resource-pool

clear snapshot quiet-time

clear spe

clear spe counters

clear spe log

clear vpdn counters

clear vpdn history failure

clear vpdn redirect

clear vpdn tunnel

clid group

clock source line

copy modem

corlist incoming

corlist outgoing

cpp authentication

cpp callback accept


channel-group

To configure serial WAN on a T1 or E1 interface, use the channel-group command in controller configuration mode. To unassign a channel group, use the no form of this command.

Cisco 2600 Series, Cisco 3660, Cisco 3725, and Cisco 3745

channel-group channel-group-number timeslots range [speed kbps] aim [aim-slot-number]

no channel-group channel-group-number

Cisco 2611 (Cisco Signaling Link Terminal [SLT])

channel-group channel-number

no channel-group channel-number

Cisco AS5350 and Cisco AS5400 Series

channel-group channel-group-number

no channel-group channel-group-number

Cisco MC3810

channel-group channel-number timeslots range [speed kbps}]

no channel-group [channel-number timeslots range]

Syntax Description

channel-group-number

Channel-group number on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745 routers. When a T1 data line is configured, channel-group numbers can be values from 0 to 23. When an E1 data line is configured, channel-group numbers can be values from 0 to 30. Valid values can be 0 or 1 on the Cisco AS5350 and Cisco AS5400.

timeslots range

Specifies one or more time slots separated by commas, or ranges of time slots belonging to the channel group separated by a dash. The first time slot is numbered 1. For a T1 controller, the time slots range from 1 to 24. For an E1 controller, the time slots range from 1 to 31.

speed kbps

(Optional) Specifies the speed of the underlying DS0s in kilobits per second. Valid values are 48, 56, and 64.

The default line speed when configuring a T1 controller is 56 kbps on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, Cisco 3745, and the Cisco MC3810.

The default line speed when configuring an E1 controller is 64 kbps on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, Cisco 3745, and the Cisco MC3810.

The kbps argument controls real-time (VBR-RT) traffic shaping, and the maximum burst size (MBS) is 255 cells.

aim aim-slot-number

Directs HDLC traffic from the T1/E1 interface to the AIM-ATM-VOICE-30 digital signaling processor (DSP) card on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745.

channel-number

Number of the channel. Valid values can be 0 or 1 on the Cisco SLT
(Cisco 2611).


Defaults

The T1/E1 line is connected to the Motorola MPC-860x processor serial communication controller (SCC) or network module with two voice or WAN interface card (VIC or WIC) slots and 0/1/2 FastEthernet ports DSCC4 by default on Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745 routers.

There is no default behavior or values on the Cisco SLT (Cisco 2611).

The serial interface object encapsulation is set to HDLC on a network access server (NAS) (Cisco AS5350 and Cisco AS5400 series routers).

The default line speed is 56 kbps when a T1 controller is configured on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, Cisco 3745, and the Cisco MC3810.

The default line speed is 64 kbps when an E1 controller is configured on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, Cisco 3745, and the Cisco MC3810.

Command Modes

Controller configuration

Command History

Release
Modification

11.3 MA

This command was introduced on the Cisco MC3810.

12.0

This command was integrated into Cisco IOS Release 12.0 on the Cisco MC3810.

12.0(7)XE

This command was implemented on the Catalyst 6000 family switches.

12.1(1)E

This command was integrated into Cisco IOS Release 12.1(1)E.

12.1(1)T

This command was modified to accommodate two channel groups on a port on 1- and 2-port T1/E1 Multiflex voice or WAN interface cards on the Cisco 2600 and Cisco 3600 series routers.

12.1(3a)E3

The number of valid values for kbps was changed on the Cisco MC3810; see the "Usage Guidelines" section for valid values.

12.2(11)T

This command was modified for use on the Cisco AS5350 and Cisco AS5400.

12.2(15)T

The aim keyword was added for use on the Cisco 2600 series (including the Cisco 2691), Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745.


Usage Guidelines

Use this command to direct High-Level Data Link Control (HDLC) traffic from the T1/E1 interface to the AIM-ATM-VOICE-30 DSP card. A channel group is created using Advanced Integration Module (AIM) HDLC resources when a channel-group command with the aim keyword is parsed during system initialization or when the command is entered during configuration. You must specify the aim keyword under a T1/E1 controller port to direct HDLC traffic from the T1/E1 interface to the AIM-ATM-VOICE-30 DSP card on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745.


Note Neither the Cisco AS500 series NAS nor the Cisco MC3810 is supported with the integrated voice and data WAN on T1/E1 interfaces using the AIM-ATM-VOICE-30 module.


If previous channel-group commands are configured with the aim keyword, subsequent channel-group commands without the aim keyword are rejected. Similarly, if a regular channel-group command is followed by another channel-group command with the aim keyword implemented, the second command is rejected on the Cisco 2600 and Cisco 2600XM.

A channel group using AIM HDLC resources is deleted only when a no channel-group command is entered.

By default, the channel-group command on a NAS sets the serial interface object encapsulation to HDLC. You must override the default by entering the encapsulation ss7 command for that serial interface object. Once you override the default, encapsulation cannot be changed again for that object. The SS7 encapsulation option is new to the Integrated Signaling Link Terminal feature and is available only for interface serial objects created by the channel-group command. The Integrated Signaling Link Terminal feature added SLT functionality on Cisco AS5350 and Cisco AS5400 platforms.

A digital SS7 link can be deleted by entering the no channel-group channel-group-number command on the associated T1/E1 controller. The link must first be stopped using the no shutdown command. It is not necessary to remove the channel ID association first.

Use the channel-group command in configurations where the router or access server must communicate with a T1 or E1 fractional data line. The channel group number may be arbitrarily assigned and must be unique for the controller. The time slot range must match the time slots assigned to the channel group. The service provider defines the time slots that comprise a channel group.


Note Channel groups, channel-associated signaling (CAS) voice groups, and time-division multiplexing (TDM) groups all use group numbers. All group numbers configured for channel groups, CAS voice groups, and TDM groups must be unique on the local Cisco MC3810 concentrator. For example, you cannot use the same group number for a channel group and for a TDM group. Furthermore, on the Cisco MC3810, only one channel group can be configured on a controller.


When you specify 56 kbps for the speed of the underlying DS0, the channel group is limited to 14 channels on the Cisco MC3810 MultiFlex Trunk (MFT). Because the 56 kbps is the default, specify the 64 kbps when you need more than 14 channels.

The channel group number can be 0 or 1 on the Cisco SLT (Cisco 2611).

The channel-group command also applies to Voice over Frame Relay, Voice over ATM, and Voice over HDLC on the Cisco MC3810.

Examples

The following example shows basic configuration directing HDLC traffic from the T1/E1 interface to the AIM-ATM-VOICE-30 DSP card, starting in global configuration mode:

Router(config)# controller e1 1/0
Router(config-controller)# clock source internal
Router(config-controller)# channel-group 0 timeslots 1-31 aim 0

The following example explicitly sets the encapsulation type to PPP to override the HDLC default:

Router# configure terminal
Router(config)# controller t1 6/0
Router(config-controller)# channel-group 2 timeslots 3 aim 0
Router(config-controller)# exit
Router(config)# interface serial 6/0:2
Router(config-if)# encapsulation ppp
Router(config-if)# ip address 12.0.0.1 255.0.0.0
Router(config-if)# no shutdown
Router(config-if)# end

The following example shows how to explicitly set the encapsulation type to SS7 to override the HDLC default using the Integrated Signaling Link Terminal feature. This example uses an 8PRI DFC card inserted into slot 7, and DS0-timeslot 3 on trunk 5 of that card is used as an SS7 link:

Router# configure terminal
Router(config)# controller t1 7/5
Router(config-controller)# channel-group 2 timeslots 3
Router(config-controller)# exit
Router(config)# interface serial 7/5:2
Router(config-if)# encapsulation ss7
Router(config-if)# channel-id 0
Router(config-if)# no shutdown
Router(config-if)# end

The following example defines three channel groups. Channel-group 0 consists of a single time slot, channel-group 8 consists of seven time slots and runs at a speed of 64 kbps per time slot, and channel-group12 consists of a single time slot.

Router(config-controller)# channel-group 0 timeslots 1
Router(config-controller)# channel-group 8 timeslots 5,7,12-15,20 speed 64
Router(config-controller)# channel-group 12 timeslots 2

The following example configures a channel group on controller T1 0 on a Cisco MC3810:

Router(config)# controller T1 0
Router(config-controller)# channel-group 10 timeslots10 64

Note SS7 digital F-link support for the 8PRI line card requires use of a third onboard TDM stream to route trunk DS0 messages to the onboard Media Gateway Controllers (MGCs).


Related Commands

Command
Description

framing

Specifies the frame type for the T1 or E1 data line.

invert data

Enables channel inversion.

linecode

Specifies the line code type for the T1 or E1 line.

voice-card

Configures a card with voice processing resources and enters voice card configuration mode.


chat-script

To create a script that will place a call over a modem, use the chat-script command in global configuration mode. To disable the specified chat script, use the no form of this command.

chat-script script-name expect-send

no chat-script script-name expect-send

Syntax Description

script-name

Name of the chat script.

expect-send

Pairs of information elements: an item to expect and an item to send in response.


Defaults

No chat scripts are defined.

Command Modes

Global configuration

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

Chat scripts are used in dial-on-demand routing (DDR) to give commands to dial a modem and commands to log on to remote systems. The defined script will be used to place a call over a modem.

Some characteristics of chat scripts are as follows:

Chat scripts are case sensitive.

You can have any number of ABORT sequences active at once.

When a chat script starts, the default timeout is 5 seconds. Changes to the timeout persist until the next time you change them in the script.

A string within quotation marks is treated as a single entity.

We recommend that one chat script (a "modem" chat script) be written for placing a call and another chat script (a "system" or "login" chat script) be written to log on to remote systems, where required.

Suggested Chat Script Naming Conventions

A suggested chat script naming convention is vendor-type-modulation. If you follow this convention, the syntax of the chat-script command becomes chat-script vendor-type-modulation expect-send.

For example, if you have a Telebit T3000 modem that uses V.32bis modulation, you would name your chat script telebit-t3000-v32bis.

The chat-script command could be written as follows:

chat-script telebit-t3000-v32bis ABORT ERROR ABORT BUSY ABORT "NO ANSWER" "" "AT H" OK "AT 
DT \T" DIALING \c TIMEOUT 30 CONNECT \c

Adhering to this naming convention allows you to use partial chat script names with regular expressions to specify a range of chat scripts that can be used. This capability is particularly useful for dialer rotary groups and is explained further in the next section.

Chat scripts are in the form expect-send, where the send string following the hyphen (-) is executed if the preceding expect string fails. Each send string is followed by a return unless it ends with the escape sequence \c. The sequence ^x is translated into the appropriate control character, and the sequence \x is translated into x if \x is not one of the special sequences listed in Table 2.

See the book titled Managing uucp and Usenet by Tim O'Reilly and Grace Todino for more information about chat scripts.

Escape Sequences

The escape sequences used in chat scripts are listed in Table 3.

Table 3 Chat Script Send String Escape Sequences  

Escape Sequence
Description

\

Sends the ASCII character with its octal value.

\\

Sends a backslash (\) character.

\"

Sends a double-quote (") character (does not work within double quotes).

\c

Suppresses a new line at the end of the send string.

\d

Delays for 2 seconds.

\K

Inserts a BREAK.

\n

Sends a newline or linefeed character.

\N

Sends a null character.

\p

Pauses for 0.25 second.

\q

Reserved, not yet used.

\r

Sends a return.

\s

Sends a space character.

\t

Sends a tab character.

\T

Replaced by phone number.

" "

Expects a null string.

BREAK

Causes a BREAK. This sequence is sometimes simulated with line speed changes and null characters. May not work on all systems.

EOT

Sends an end-of-transmission character.


Expect-Send Pairs

Sample supported expect-send pairs are described in Table 4.

Table 4 Sample Supported Expect-Send Pairs

Expect and Send Pair
Function

ABORT string

Designates a string whose presence in the input indicates that the chat script has failed.

TIMEOUT time

Sets the time to wait for input, in seconds. The default is 5 seconds and a timeout of 60 seconds is recommended for V.90 modems.


For example, if a modem reports BUSY when the number dialed is busy, you can indicate that you want the attempt stopped at this point by including ABORT BUSY in your chat script.

Alternate Handlers

If you use the expect-send pair ABORT SINK instead of ABORT ERROR, the system terminates abnormally when it encounters SINK instead of ERROR.

Missed Characters

After the connection is established and you press the Return key, you must often press Return a second time before the prompt appears.

For example, you might include the following as part of your chat script:

ssword:-/r-ssword

This part of the script specifies that, after the connection is established, you want ssword to be displayed. If it is not displayed, you must press Return again after the timeout passes.

Examples

The following example shows the chat-script command being used to create a chat script named t3000:

chat-script t3000 ABORT ERROR ABORT BUSY ABORT "NO ANSWER" "" "AT H" OK "AT DT \T" DIALING 
\c TIMEOUT 60 CONNECT \c

Related Commands

Command
Description

dialer map

Configures a serial interface or ISDN interface to call one or multiple sites or to receive calls from multiple sites.

script dialer

Specifies a default modem chat script.


class (controller)

To create a signaling class structure that can be referred to by its name, use the class command in controller configuration mode. To remove the structure, use the no form of this command.

class name

no class name

Syntax Description

name

The signaling class name which specifies the template that processes the ANI/DNIS delimiter.


Command Modes

Controller configuration

Command History

Release
Modification

12.1(1)T

This command was introduced.


Usage Guidelines

A signaling class allows the Cisco AS5300 and Cisco AS5800 universal access servers to provide the ANI/DNIS delimiter on incoming T1/CAS trunk lines. The digit collection logic in the call switching module (CSM) for incoming T1 CAS calls in dual tone multifrequency (DTMF) is modified to process the delimiters, the ANI digits, and the DNIS digits.

For this feature to work, a CAS signaling class with the template to process ANI/DNIS delimiters has to be defined. This creates a signaling class structure which can be referred to by its name. The name argument must match the name configured in the signaling-class cas command.

Examples

The following example defines a CAS signaling class with the template to process ANI/DNIS delimiters on channel 1:

Router(config)# signaling-class cas test
Router(config-sig-class)# profile incoming S<*a<*d<*n

Router(config)# controller T1 1/0/1
Router(config-controller)# cas-custom 1
Router(config-ctrl-cas)# class test

Related Commands

Commands
Descriptions

profile incoming

Defines a template formed by directives guiding the CSM to process the digit sequence for a signaling class.

signaling-class cas

Defines a signaling class which specifies the template that processes the ANI/DNIS delimiter.


clear cot summary

To reset the counters, use the clear cot summary command in privileged EXEC mode.

clear cot summary

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

11.3(7)

This command was introduced.


Examples

There is no display generated, but the counters in the show cot summary command would be all zeros.

Related Commands

Command
Description

show cot dsp

Displays information about the COT DSP configuration or current status.

show cot request

Displays COT request information.

show cot summary

Displays information about the COT activity.


clear counters (async)

To clear the counters of a specified asynchronous interface or specified asynchronous interface group, as displayed by the show interface async command, use the clear counters command in EXEC mode.

clear counters {async async-interface-number | group-async group-async-interface-number}

Syntax Description

async

Counters in a specified asynchronous interface.

async-interface-number

Required async interface number of the asynchronous interface that has been previously created with this number specification. The range is from 1 through 49.

group-async

Counters in a specified asynchronous interface group.

group-async-interface-number

Required group-async interface number that has been previously created with this number specification. The range is from 0 through 49.


Command Modes

EXEC

Command History

Release
Modification

12.0

This command was introduced.


Usage Guidelines

Before using this command, use the show interface async command to display the asynchronous related counters on the specified asynchronous interface.

Examples

The following example uses the show interface async command to display the asynchronous related counters on the asynchronous interface named 1. The example then uses the clear counters group-async command to clear the counters. After the counters are cleared, the configuration file for the interface is displayed.

Router# show interface async 1

Async1 is down, line protocol is down
  modem(slot/port)=1/0, state=IDLE
  dsx1(slot/unit/channel)=NONE, status=VDEV_STATUS_UNLOCKED
  Hardware is Async Serial
  Interface is unnumbered.  Using address of Ethernet0 (1.18.31.9)
  MTU 1500 bytes, BW 115 Kbit, DLY 100000 usec, rely 255/255, load 1/255
  Encapsulation PPP, loopback not set, keepalive not set
  DTR is pulsed for 5 seconds on reset
  LCP Closed
  Closed: IPCP, CDPCP
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 00:03:46
  Input queue: 0/10/0 (size/max/drops); Total output drops: 0/////
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/0/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

Router#
Router# clear counters group-async 1

Clear "show interface" counters on this interface [confirm]
Router# 

*Oct 17 00:42:27.083: %CLEAR-5-COUNTERS: Clear counter on interface Group-Asynce

Related Commands

Command
Description

clear modem counters

Clears the statistical counters on one or more manageable modems on access servers or routers.

show interface async

Displays the asynchronous related counters on the specified asynchronous interface.


clear counters line

To clear line counters, use the clear counters line command in EXEC mode.

clear counters line {type | number}

Syntax Description

type

Line type: aux, console, tty, or vty.

number

First line number to clear, which can be between 0 and 54.


Command Modes

EXEC

Command History

Release
Modification

11.2 P

This command was introduced.


Usage Guidelines

This command clears the line counters shown by the show line command.

Examples

The following example shows the available options under the clear counters line command. When you issue this command, the counters (for example, Uses and Noise) displayed by the show line command are cleared.

Router# clear counters line ?

   <0-54>   First Line number
   aux      Auxiliary line
   console  Primary terminal line
   tty      Terminal controller
   vty      Virtual terminal

Router# exit

Router> show line

 Tty Typ     Tx/Rx     A Modem  Roty AccO AccI  Uses    Noise   Overruns
*  0 CTY               -    -      -    -    -     0        4        0/0
A  1 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A  2 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A  3 TTY 115200/115200 - inout     -    -    -     1        0        0/0
*  4 TTY 115200/115200 - inout     -    -    -     0        0        0/0
*  5 TTY 115200/115200 - inout     -    -    -     0        0        0/0
*  6 TTY 115200/115200 - inout     -    -    -     0        0        0/0
*  7 TTY 115200/115200 - inout     -    -    -     0        0        0/0
*  8 TTY 115200/115200 - inout     -    -    -     0        0        0/0
*  9 TTY 115200/115200 - inout     -    -    -     0        0        0/0
* 10 TTY 115200/115200 - inout     -    -    -     0        0        0/0
* 11 TTY 115200/115200 - inout     -    -    -     0        0        0/0
* 12 TTY 115200/115200 - inout     -    -    -     0        0        0/0
* 13 TTY 115200/115200 - inout     -    -    -     0        0        0/0
* 14 TTY 115200/115200 - inout     -    -    -     0        0        0/0
* 15 TTY 115200/115200 - inout     -    -    -     0        0        0/0
A 16 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A 17 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A 18 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A 19 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A 20 TTY 115200/115200 - inout     -    -    -     1        0        0/0
A 21 TTY 115200/115200 - inout     -    -    -     1        0        0/0

Related Commands

Command
Description

show line

Displays the parameters of a terminal line.


clear dialer

To clear the values of dialer statistics for one or more serial interfaces or BRIs configured for dial-on-demand routing (DDR), use the clear dialer privileged EXEC mode command

clear dialer [interface interface-type interface-number]

Cisco 7500 Series Routers Only

clear dialer [interface serial slot/port]

Syntax Description

interface

(Optional) Indicates that one interface will be specified.

interface-type

(Optional) Interface type: async, serial, or bri.

interface-number

(Optional) Interface number.

slot/port

(Optional) Backplane slot number and port number on the interface. See your hardware installation manual for the specific slot and port numbers.


Command Modes

Privileged EXEC

Command History

Release
Modification

11.0

This command was introduced.


Usage Guidelines

If the interface keyword and the arguments are not used, dialer statistics are cleared on all interfaces.

Examples

The following example clears the dialer statistics on serial interface 1:

Router# clear dialer interface serial 1

clear dialer dnis

To reset the counter statistics associated with a specific dialed number identification service (DNIS) group or number, use the clear dialer dnis command in privileged EXEC mode.

clear dialer dnis {group name | number number}

Syntax Description

group name

Dialer DNIS group statistics.

number number

Dialer DNIS number statistics.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(4)XI

This command was introduced.


Usage Guidelines

Use the clear dialer dnis EXEC command to reset the counter statistics associated with a specific DNIS group or number. This command clears the counters for a DNIS group to reset the counter statistics associated with a specific DNIS group or number. If an ISP is charging a customer for the number of calls to a DNIS, it can clear the number after a week or month by using this command.

Examples

The following example shows the result of using the clear dialer dnis command for the DNIS group named "dg1". Note that the counters have been cleared after the clear dialer dnis command has been entered.

Router# show dialer dnis group dg1

DNIS Number:71028
  4 total connections
  3 peak connections
  1 calltype mismatches
DNIS Number:4156266541
  8 total connections
  5 peak connections
  0 calltype mismatches
DNIS Number:4085541628
  3 total connections
  2 peak connections
  0 calltype mismatches
DNIS Number:71017
  2 total connections
  1 peak connections
  0 calltype mismatches

Router# clear dialer dnis group dg1

Router# show dialer dnis group dg1 

DNIS Number:71028
  0 total connections
  0 peak connections
  0 calltype mismatches
DNIS Number:4156266541
  0 total connections
  0 peak connections
  0 calltype mismatches
DNIS Number:4085541628
  0 total connections
  0 peak connections
  0 calltype mismatches
DNIS Number:71017
  0 total connections
  0 peak connections
  0 calltype mismatches

Related Commands

Command
Description

show dialer dnis

Displays the number of calls DNIS groups have had.


clear dialer sessions

To remove all dialer sessions and disconnect links when connected, use the clear dialer sessions command in EXEC mode.

clear dialer sessions

Syntax Description

This command has no arguments or keywords.

Command Modes

EXEC

Command History

Release
Modification

12.0(3)T

This command was introduced.


Examples

The following example shows how to use the clear dialer sessions command:

Router# clear dialer sessions

Related Commands

Command
Description

show dialer sessions

Displays all dialer sessions.


clear dsip tracing

To clear Distributed System Interconnect Protocol (DSIP) tracing statistics (trace logging), use the clear dsip tracing command in privileged EXEC mode.

clear dsip tracing {counters | tracing} [control | data | ipc]

Syntax Description

counters

DSIP counters.

tracing

DSIP tracing buffers.

control

(Optional) Control counters or tracing buffers.

data

(Optional) Data counters or tracing buffers.

ipc

(Optional) Inter-process communication counters or tracing buffers.


Defaults

If no option is specified, all control, data, and inter-process communication counters or tracing buffers are cleared.

Command Modes

Privileged EXEC

Command History

Release
Modification

11.3(2)AA

This command was introduced.


Usage Guidelines

Use this command to clear the counters displayed with the show dsip tracing EXEC command.

Examples

In the following example, the DSIP counters are cleared (including data, control, and ipc counters):

Router# clear dsip tracing

Related Commands

Command
Description

show dsip tracing

Displays DSIP tracing buffer information.

show dsip version

Displays DSIP version information.


clear interface virtual-access

To tear down the virtual access interface and free the memory for other dial-in uses, use the clear interface virtual-access command in EXEC mode.

clear interface virtual-access number

Syntax Description

number

Virtual access interface number.


Command Modes

EXEC

Command History

Release
Modification

11.2 F

This command was introduced.


Usage Guidelines

This command does not free the memory for uses unrelated to dial-in access.

Examples

The following example clears a specified virtual access interface. You can use the show interfaces virtual-access command to display the interface numbers before you clear any specific one.

Router# clear interface virtual access 1

Related Commands

Command
Description

interface virtual-template

Creates a virtual template interface that can be configured and applied dynamically in creating virtual access interfaces.

show interfaces

Displays statistics for the interfaces configured on a router or access server.


clear ip route download

To clear static routes downloaded from an authentication, authorization, and accounting (AAA) server, use the clear ip route download command in EXEC mode.

clear ip route download {* | network-number network-mask | reload}

Syntax Description

*

All routes.

network-number network-mask

Destination network route and mask in standard IP address notation. For example, 10.1.1.1 255.255.255.255.

reload

Delete all routes, then reload static routes from the AAA server and reset the timer configured by the aaa route download command.


Command Modes

EXEC

Command History

Release
Modification

12.0(3)T

This command was introduced.


Usage Guidelines

This command forces the router to reload static routes from the AAA server before the update timer expires.

Examples

The following example shows how to clear all routes:

Router# clear ip route download *

Related Commands

Command
Description

aaa authorization configuration default

Downloads static route configuration information from the AAA server using TACACS+ or RADIUS.

aaa route download

Enables the download static route feature and sets the amount of time between downloads.

show ip route

Displays all static IP routes, or those installed using the AAA route download function.


clear line

To return a terminal line to idle state, use the clear line command in EXEC mode.

clear line line-number

Syntax Description

line-number

Absolute line number.


Command Modes

EXEC

Command History

Release
Modification

10.0

This command was introduced.


Usage Guidelines

Use this command to log out of a specific session running on another line. If the line uses a modem, the modem will be disconnected.

Examples

The following example resets line 3 to idle state:

Router# clear line 3

clear line async-queue

To reset the connections currently waiting to use a rotary line in the queue, use the clear line async-queue command in EXEC mode.

clear line async-queue [rotary-group]

Syntax Description

rotary-group

(Optional) Rotary group.


Command Modes

EXEC

Command History

Release
Modification

12.1(1)T

This command was introduced.


Usage Guidelines

Use this command without any argument to remove all rotary line queues and terminate the asynchronous queue manager. Use the clear line async-queue command with the rotary-group argument to reset only the specified rotary group.

Examples

The following example clears all the rotary queues and shows the resulting output:

Router# clear line async-queue 

Clearing queued connections for ALL rotary groups ! [confirm]
Clearing rotary group 1
  Clearing line 69
  Clearing line 70
Clearing rotary group 2
  Clearing line 66
  Clearing line 67
  Clearing line 68

clear modem

To reset the hardware for one or more manageable modems on an access server or router, use the clear modem command in EXEC mode.

clear modem {slot/port | all | group group-number | at-mode slot/port | test}

Syntax Description

slot/port

Slot and modem port number. (Include the slash mark when entering this variable, for example: 1/1.)

all

All modems. This command disconnects any active calls.

group group-number

Group of modems. The modem group number is the number of the group you have previously created.

at-mode slot/port

AT directly connected session. The variable, slot/port, is required. This EXEC command clears an attention (AT) directly connected session to a manageable Microcom modem from a second Telnet session.

test

Log or test report that is displayed by the show modem test command. If you do not clear the test regularly, eventually the oldest test report will replace the current test report.


Command Modes

EXEC

Command History

Release
Modification

11.2

This command was introduced.


Usage Guidelines

The modem hardware is reset for modems that are idle or busied out for long periods of time.

An AT directly connected session is usually initiated and closed from the same Telnet session when you enter the modem at-mode command and press Ctrl-C. However, you can clear an AT directly connected session that was mistakenly left open by enabling the clear modem at-mode command from a second Telnet session in to the access server.

Examples

The following example of the clear modem slot/port command resets the hardware for manageable modem 1/1:

Router# clear modem 1/1

The following is an example of using the clear modem all command:

Router# clear modem all

This command will disconnect any active calls.
Clear (reset) all modems? [confirm]
Clearing modems................................................
Done
Router#

The following examples of the clear modem group command clear the manageable modems in group 1:

Router# clear modem group 1
Router# clear modem group1

The following example executes the clear modem at-mode command from a Telnet session:

modem at-mode 1/1

The following example executes the clear modem at-mode command from a second Telnet session while the first Telnet session is connected to the modem:

Router# clear modem at-mode 1/1

clear "modem at-mode" for modem 1/1 [confirm]
Router#

The following output is displayed in the first Telnet session after the modem is cleared by the second Telnet session:

Direct connect session cleared by vty0 (172.19.1.164)

Related Commands

Command
Description

clear modem counters

Clears the statistical counters on one or more manageable modems on access servers or routers.

interface group-async

Creates a group interface that will serve as master, to which asynchronous interfaces can be associated as members.

show modem at-mode

Opens a directly connected session and enters AT command mode, which is used for sending AT commands to Microcom manageable modems.

show modem test

Displays the modem test log.


clear modem counters

To clear the statistical counters on one or more manageable modems installed in an access server, use the clear modem counters command in EXEC mode.

clear modem counters [slot/port-number | group [group-number]]

Syntax Description

slot/port-number

(Optional) Slot and modem port number. (Include the slash mark when entering this variable, for example: 1/1.)

group [group-number]

(Optional) One or all groups of modems. The optional modem group number is the number of a group-async interface. The group number range is from 1 to 1002.


Defaults

Disabled

Command Modes

EXEC

Command History

Release
Modification

11.2

This command was introduced.


Usage Guidelines

Entering the clear modem counters command without specifying an optional keyword or argument resets the modem statistics on each modem and the summary statistics displayed in the show modem summary command.

The subcommand clear modem counters group without the group number clears counters in all modem groups. The optional modem group number is the number of a group you have previously created.

Examples

The following example of the clear modem counters slot/port command clears the statistical counters on manageable modem 1/1:

Router# clear modem counters 1/1

The following example of the clear modem counters group command clears the statistical counters on all manageable modem groups:

Router# clear modem counters group

Clear "show modem" counters for all modem groups [confirm]
Router#
*Oct 17 20:20:24.974: %CLEAR-5-COUNTERS: Clear counter on modems in all groups e
Router#

Related Commands

Command
Description

clear cot summary

Clears the counters of a specified asynchronous interface or specified asynchronous interface group.

show modem summary

Displays a high-level report for all manageable modems dialing into and out of the network.


clear modem log

To reset the log for one or more manageable modems installed in a Cisco AS5800 series access server, use the clear modem log command in EXEC mode.

clear modem log [shelf/slot/port shelf/slot/port ... | group [group-number]]

Syntax Description

shelf/slot/port

(Optional) One or several modem shelves listed in the order shelf, slot, and port. (Include the slash mark when entering the values.) The shelf value is the shelf ID of the dial shelf. The slot values range from 2 to 11 and the port values range from 0 to 323 on the UP324 modem card, and from 0 to 143 on the Double Density Modem Module (DMM) card.

group [group-number]

(Optional) One or all groups of modems. The optional modem group number is the number of a group-async interface. The group number range is from 1 to 1002.


Defaults

Reset logs for all modems.

Command Modes

EXEC

Command History

Release
Modification

12.1 T

This command was introduced.


Usage Guidelines

Entering the clear modem log command without specifying an optional keyword or argument resets the log for all modems. Entering the clear modem log command and the group keyword without an argument clears the log for all modem groups. Use the optional shelf/slot/port or group-number argument to clear the log of a specific modem or modem group.

The group-number argument is the number of a group you have previously created using the interface group-async global configuration and group range interface configuration commands. These commands create a group of asynchronous interfaces that are associated with a group asynchronous interface on the same device.

Examples

The following example clears the modem log for shelf 1, slot 4, port 0:

Router# clear modem log 1/4/0

Clear Modem log for modem 1/4/00 [confirm]y

Use the show modem log command to verify that the modem log for shelf 1, slot 4, port 0 is cleared:

Router# show modem log 1/4/0

Modem 1/4/00 Events Log:

The following example clears the modem logs for shelf 1, slot 4, port 0 and shelf 1, slot 4, port 2:

Router# clear modem log 1/4/1 1/4/2

Clear modem log for modems 1/4/01 to 1/4/02 [confirm]y

Use the show modem log command to verify the modem logs for shelf 1, slot 4, port 0 and shelf 1, slot 4, port 2 are cleared:

Router# show modem log 1/4/1 1/4/2

Modem 1/4/01 Events Log:
Modem 1/4/02 Events Log:

The following example clears the log for all modems:

Router# clear modem log

Clear modem log for all modems [confirm]y

The following example clears the log for all modem groups:

Router# clear modem log group

Clear modem log for modems in all groups [confirm]y

The following example clears the log for modem group 0:

Router# clear modem log group 0

Clear modem log for modems in group 0 [confirm]y

Related Commands

Command
Description

group range

Creates a list of member asynchronous interfaces (associated with a group interface).

interface group-async

Creates a group interface that will serve as master, to which asynchronous interfaces can be associated as members.

show modem log

Displays the modem history event status performed on a manageable modem or group of modems.


clear modempool-counters

To clear the active or running counters associated with one or more modem pools, use the clear modempool-counters command in EXEC mode.

clear modempool-counters [name]

Syntax Description

name

(Optional) Modem pool name. If you do not include this option, all counters for all modem pools will be cleared.


Command Modes

EXEC

Command History

Release
Modification

11.2 P

This command was introduced.


Usage Guidelines

The clear modempool-counters command clears the counters that are displayed in the show modem-pool command. This command is used only with MICA technologies digital modems.

Examples

The following examples show three modem pools set up on the access server: System-def-Mpool, v90service, and v34service.

Router# show modem-pool

modem-pool: System-def-Mpool
modems in pool: 20   active conn: 15
0 no free modems in pool

modem-pool: v90service
modems in pool: 50  active conn: 43
  3 no free modems in pool
 called_party_number: 4441000
   max conn allowed: 50, active conn: 43
   3 max-conn exceeded, 3 no free modems in pool

modem-pool: v34service
modems in pool: 50  active conn: 30
 1 no free modems in pool
 called_party_number: 4443000
   max conn allowed: 50, active conn: 30
   0 max-conn exceeded, 0 no free modems in pool

In the following example, the clear modempool-counters v90service command clears the running counters for the v90services modem pool.

Router# clear modempool-counters v90service
Router# show modem-pool

modem-pool: System-def-Mpool
modems in pool: 20   active conn: 15
0 no free modems in pool

modem-pool: v90service
modems in pool: 50  active conn: 0
 0 no free modems in pool
 called_party_number: 4441000
   max conn allowed: 50, active conn: 0
   0 max-conn exceeded, 0 no free modems in pool

modem-pool: v34service
modems in pool: 50  active conn: 30
 1 no free modems in pool
 called_party_number: 4443000
   max conn allowed: 50, active conn: 30
   0 max-conn exceeded, 0 no free modems in pool

Related Commands

Command
Description

called-number (modem pool)

Assigns a called party number to a pool of modems.

modem-pool

Creates a new modem pool or specifies an existing modem pool, which allows you to physically or virtually partition your access server for dial-in and dial-out access.

pool-member

Assigns a range of modems to a modem pool.

show modem-pool

Displays the configuration and connection status for one or more modem pools.


clear port

To reset the NextPort port and clear any active call to the port, use the clear port command in EXEC mode.

Cisco AS5400 with the NextPort Dial Feature Card (DFC)

clear port [slot | slot/port]

Cisco AS5800 with the Universal Port Card (UPC)

clear port [shelf/slot | shelf/slot/port]

Syntax Description

slot

(Optional) The slot number to be cleared. All ports on the specified slot will be cleared. For the Cisco AS5400, slot values range from 1 to 7.

slot/port

(Optional) The slot and port number to be cleared. For the Cisco AS5400, slot values range from 1 to 7 and port values range from 0 to one less than the number of ports supported by the card. You must type in the slash mark.

shelf/slot

(Optional) The shelf and slot number to be cleared. All ports on the specified shelf and slot will be cleared. For the Cisco AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11. You must type in the slash mark.

shelf/slot/port

(Optional) The shelf, slot, and port number to be cleared. For the Cisco AS5800, shelf values range from 0 to 1, slot values range from 2 to 11, and port values range from 0 to 323. You must type in the slash mark.


Command Modes

EXEC

Command History

Release
Modification

12.1(1)XD

This command was introduced on the Cisco AS5400.

12.1(3)T

This command was implemented on the Cisco AS5800.

12.1(5)XM1

This command was implemented on the Cisco AS5350.

12.2(11)T

This command was integrated into Cisco IOS Release 12.2(11)T.


Usage Guidelines

If you specify the shelf, slot, and port, you clear that port on that SPE. If you specify only the shelf and slot, you clear all active ports on that particular shelf and slot. If you do not specify a shelf, slot, or port, you clear all the ports on the access server.

This command also clears the Bad state on a port and resets it. However, the port is not cleared if the SPE was previously in a Bad state due to an SPE firmware download.

Examples

The following example shows output from the clear port command on the Cisco AS5400 with the NextPort DFC. This example clears slot 1, port 1:

Router# clear port 1/1

This will clear port 1/01[confirm]y

The following example shows output from the clear port command on the Cisco AS5800 with the UPC. This example clears shelf 1, slot 3, port 0:

Router# clear port 1/3/0

This will clear port 1/03/00[confirm]y

Related Commands

Command
Description

busyout

Informs the central-office switch that a channel is out of service.

clear line

Returns a terminal line to idle state.

clear spe

Reboots all specified SPEs.

show port digital log

Displays the data event log for digital modems.

show port modem log

Displays the events generated by the modem sessions

show spe

Displays SPE status.

shutdown (port)

Disables a port.


clear port log

To clear all event entries in the port level history event log, use the clear port log command in EXEC mode.

Cisco AS5400 with NextPort DFC

clear port log [slot | slot/port]

Cisco AS5800 with Universal Port Card

clear port log [shelf/slot | shelf/slot/port]

Syntax Description

slot

(Optional) All ports on the specified slot. For the AS5400, slot values range from 0 to 7.

slot/port

(Optional) All ports on the specified slot and SPE. For the AS5400, slot values range from 0 to 7 and port values range from 0 to 107. Be sure to include the slash mark.

shelf/slot

(Optional) All ports on the specified shelf and slot. For the AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11. Be sure to include the slash mark.

shelf/slot/port

(Optional) All ports on the specified SPE. For the AS5800, shelf values range from 0 to 1, slot values range from 2 to 11, and port values range from 0 to 323. Be sure to include the slash mark.


Command Modes

EXEC

Command History

Release
Modification

12.1(1)XD

This command was introduced on the Cisco AS5400.

12.1(3)T

This command was implemented on the Cisco AS5800.


Usage Guidelines

The clear port log command clears the entire port log. You cannot remove individual service events from the port log. On the Cisco AS5400 only, you can use show port modem log or the show port digital log to display specific service events, but you must use clear port log to clear the entire port event log.

Examples

The following example shows output from the clear port log command on the Cisco AS5400 with NextPort DFC. This example clears slot 1, port 1:

Router# clear port log 1/1

This will clear log event history for port(s)1/01 - 1/01[confirm]y

The following example shows output from the clear port log command on the Cisco AS5800 with universal port card. This example clears shelf 1, slot 3, port 0:

Router# clear port log 01/03/00

This will clear port 1/03/00[confirm]y

Related Commands

Command
Description

show port digital log

Displays the data event log for digital modems.

show port modem log

Displays the events generated by the modem sessions.


clear resource-pool

To reset the counter statistics associated with a specific customer profile, call discriminator, or physical resource, use the clear resource-pool command in privileged EXEC mode.

clear resource-pool {customer | discriminator | resource} {name | all}

Syntax Description

customer

Customer profile.

discriminator

Call discriminator.

resource

Physical resource. Checks the counters maintained for resource groups.

name

Specific customer profile, discriminator, or physical resource in the access server.

all

All customer profiles, discriminators, or physical resources in the access server.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(4)XI

This command was introduced.


Usage Guidelines

Use the clear resource-pool privileged EXEC command to reset the counter statistics associated with a specific customer profile, call discriminator, or physical resource.

Examples

The following example shows the use of the clear resource-pool command for the specific customer named "customer-isp":

Router# clear resource-pool customer ?

  WORD  Customer profile name
  all   Clear all customer profiles
Router# clear resource-pool customer customer_isp

Related Commands

Command
Description

show resource-pool call

Displays all active call information for all customer profiles and resource groups.

show resource-pool customer

Displays the contents of one or more customer profiles.

show resource-pool resource

Displays the resource groups configured in the NAS.


clear snapshot quiet-time

To end the quiet period on a client router within two minutes, use the clear snapshot quiet-time command in EXEC mode.

clear snapshot quiet-time interface-type interface-number

Syntax Description

interface-type interface-number

Interface type and number.


Command Modes

EXEC

Command History

Release
Modification

10.3

This command was introduced.


Usage Guidelines

The clear snapshot quiet-time command places the client router in a state to reenter the active period within two minutes. The two-minute hold period ensures a quiet period of at least two minutes between active periods.

Examples

The following example ends the quiet period on dialer interface 1:

Router# clear snapshot quiet-time dialer 1

Related Commands

Command
Description

show snapshot

Displays snapshot routing parameters associated with an interface.

snapshot client

Configures a client router for snapshot routing.


clear spe

To reboot all specified service processing elements (SPEs), use the clear spe command in EXEC mode.

Cisco AS5400 with the NextPort Dial Feature Card (DFC)

clear spe [slot | slot/spe]

Cisco AS5800 with the Universal Port Card (UPC)

clear spe [shelf/slot | shelf/slot/spe]

Syntax Description

slot

(Optional) The slot number to be cleared. All ports on the specified slot will be cleared. For the Cisco AS5400, slot values range from 1 to 7.

slot/spe

(Optional) The slot and service processing element (SPE) number to be cleared. All ports on the specified slot and SPE will be cleared. For the Cisco AS5400, slot values range from 1to 7 and SPE values range from 1 to 17. You must type in the slash mark.

shelf/slot

(Optional) The shelf and slot number to be cleared. All ports on the specified shelf and slot will be cleared. For the Cisco AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11. You must type in the slash mark.

shelf/slot/spe

(Optional) The shelf, slot and SPE number to be cleared. All ports on the specified SPE will be cleared. For the Cisco AS5800, shelf values range from 0 to 1, slot values range from 2 to 11, and SPE values range from 0 to 53. You must type in the slash marks.


Command Modes

EXEC

Command History

Release
Modification

12.1(1)XD

This command was introduced on the Cisco AS5400.

12.1(3)T

This command was implemented on the Cisco AS5800.

12.1(5)XM1

This command was implemented on the Cisco AS5350.

12.2(11)T

This command was integrated into Cisco IOS Release 12.2(11)T.


Usage Guidelines

Execution of the clear spe command causes the configured firmware to be downloaded to the specified SPE or the range of SPEs and causes the power-on self-test (POST) to be executed. This command can be executed regardless of the state of the SPEs.


Note All active ports running on the SPE are prematurely terminated and messages are logged into the appropriate log.


This command downloads configured SPEs with firmware as configured. Unconfigured SPEs download with the default firmware, which is the bundled version. To configure and manage the downloading of firmware without abruptly terminating SPEs, use the firmware location or firmware upgrade commands as appropriate.

Examples

The following example clears SPEs when the clear spe command is entered on the Cisco AS5400 with the NextPort DFC. This example performs a coldstart on slot 1, SPE 1.

Router# clear spe 1/1

Router# This will tear all active calls on the SPE(s), if any.[confirm]y

The following example clears SPEs when the clear spe command is entered on the Cisco AS5800 with the UPC. This example performs a coldstart on shelf 1, slot 8, SPE 0.

Router# clear spe 1/8/0

Router# This will tear all active calls on the SPE(s), if any.[confirm]y

Related Commands

Command
Description

busyout

Disables a port by waiting for the active services on the specified port to terminate.

clear line

Returns a line to its idle state.

clear port

Resets the NextPort port and clears any active call.

show spe

Displays SPE status.

shutdown (port)

Disables a port.


clear spe counters

To clear all statistics, use the clear spe counters command in EXEC mode.

Cisco AS5350 and Cisco AS5400 with the NextPort Dial Feature Card (DFC)

clear spe counters [slot | slot/spe]

Cisco AS5800 with the Universal Port Card (UPC)

clear spe counters [slot/spe | shelf/slot/spe]

Syntax Description

slot

(Optional) The slot number to be cleared. All ports on the specified slot will be cleared. For the Cisco AS5350 slot values range from 1 to 3. For the Cisco AS5400, slot values range from 1 to 7.

slot/spe

(Optional) The slot and service processing element (SPE) number to be cleared. All ports on the specified slot and SPE will be cleared. For the Cisco AS5350 slot values range from 1 to 3. For the Cisco AS5400, slot values range from 1 to 7. The SPE values range from 0 to 17.You must type in the slash mark.

shelf/slot

(Optional) The shelf and slot number to be cleared. All ports on the specified shelf and slot will be cleared. For the Cisco AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11. You must type in the slash mark.

shelf/slot/spe

(Optional) The shelf, slot and SPE number to be cleared. All ports on the specified SPE will be cleared. For the Cisco AS5800, shelf values range from 0 to 1, slot values range from 2 to 11, and SPE values range from 0 to 53. You must type in the slash marks.


Command Modes

EXEC

Command History

Release
Modification

12.1(1)XD

This command was introduced on the Cisco AS5400.

12.1(3)T

This command was implemented on the Cisco AS5800.

12.1(5)XM1

This command was implemented on the Cisco AS5350.

12.2(11)T

This command was integrated into Cisco IOS Release 12.2(11)T.


Usage Guidelines

The clear spe counters command clears statistical counters of all service types for the specified SPE, range of SPEs, or all the SPEs. If you do not set a parameter, you clear all SPE statistical counters.

Examples

The following example shows how to clear all statistics by entering the clear spe counters command on the Cisco AS5350 with the NextPort DFC:

Router# clear spe counters 1/3 1/7

This will clear statistic counters for SPEs 1/03 - 1/07 [confirm]y

The following example shows how to clear all statistics by entering the clear spe counters command on the Cisco AS5800 with the UPC. This example clears shelf 1, slot 3, ports 0 to 11.

Router# clear spe counters 1/3/0 1/3/11

This will clear statistic counters for SPEs 1/03/00 - 1/03/11[confirm]y 

clear spe log

To clear event entries in the slot history event log, use the clear spe log command in EXEC mode.

Cisco AS5400 with the NextPort Dial Feature Card (DFC)

clear spe log [slot]

Cisco AS5800 with the Universal Port Card (UPC)

clear spe log [shelf/slot]

Syntax Description

slot

(Optional) The slot number to be cleared. All ports on the specified slot will be cleared. For the Cisco AS5400, slot values range from 1 to 7.

shelf/slot

(Optional) The shelf and slot number to be cleared. All ports on the specified shelf and slot will be cleared. For the Cisco AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11. You must type in the slash mark.


Command Modes

EXEC

Command History

Release
Modification

12.1(1)XD

This command was introduced on the Cisco AS5400.

12.1(3)T

This command was implemented on the Cisco AS5800.

12.1(5)XM1

This command was implemented on the Cisco AS5350.

12.2(11)T

This command was integrated into Cisco IOS Release 12.2(11)T.


Usage Guidelines

The clear spe log command clears event entries in the slot history event log. If you do not specify the shelf/slot range, all service processing element (SPE) event entries clear.

If you specify the shelf/slot, only the event entries for that slot clear.

Examples

The following example shows output from the clear spe log command on the Cisco AS5400 with 
the NextPort DFC. This example clears the SPE log from shelf 1, slot 3:

Router# clear spe log 1/03

This will clear slot event history for slot(s) 3 - 3[confirm]y

The following example shows output from the clear spe log command on the Cisco AS5800 with the UPC. This example clears shelf 1, slot 8, SPE 0:

Router# clear spe log 1/8/0 

This will clear slot event history for slot(s) 8 - 8[confirm]y

Related Commands

Command
Description

show spe log

Displays the SPE system log.


clear vpdn counters

To clear the counters of a specified virtual private dial-up network (VPDN) session or tunnel or to clear all of the VPDN counters, as displayed by the show vpdn command, use the clear vpdn counters command in privileged EXEC mode.

clear vpdn counters [session {interface interface-type interface-number | id tunnel-id session-id | username username} | tunnel {l2f | l2tp | pptp} {all | hostname hostname | ip {remote | local} ip-address | id tunnel-id}]

Syntax Description

session

(Optional) Specifies that session counters will be cleared.

interface interface-type interface-number

Clears VPDN session counters for the interface specified by the interface-type interface-number arguments. Valid values for the interface-type argument are:

serial—Specifies that VPDN session counters will be cleared on a serial interface.

HSSI—Specifies that VPDN session counters will be cleared on a High-Speed Serial Interface (HSSI).

BRI—Specifies that VPDN session counters will be cleared on a BRI interface.

SUBIF—Specifies that VPDN session counters will be cleared on an ATM or Frame Relay subinterface.

Virtual-Access—Specifies that VPDN session counters will be cleared on a virtual access interface.

id tunnel-id session-id

Clears VPDN session counters by tunnel and session ID. Valid values for the tunnel-id argument and the session-id argument range from 1 to 65535.

username username

Clears VPDN session counters for the username specified by the username argument.

tunnel {l2f | l2tp | pptp}

(Optional) Clears both session and tunnel counters for the tunnel type specified by the l2f, l2tp, or pptp keyword.

all

Clears VPDN counters for all sessions and tunnels of the selected tunnel type.

hostname hostname

Clears VPDN counters for all sessions and tunnels of the selected tunnel type associated with the particular host specified by the hostname argument.

For the l2tp and pptp tunnel type options, the hostname argument has the following value:

remote-name [local-name]

For the l2f tunnel type option, the hostname argument has the following value:

nas-name gateway-name

The nas-name argument is the name of the network access server and gateway-name argument is the name of the home gateway.

ip {remote | local} ip-address

Clears VPDN counters for all sessions and tunnels of the selected tunnel type associated with the remote or local IP address specified by the ip-address argument.

id tunnel-id

Clears VPDN counters for all sessions and tunnels of the selected tunnel type associated with the tunnel id specified with the tunnel-id argument. Valid values for the tunnel-id argument range from 1 to 65,535.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(13)T

This command was introduced.


Usage Guidelines

Use this command to clear counters for VPDN sessions and tunnels. If no keywords are used when the clear vpdn counters command is used, all VPDN session and tunnel counters are cleared. If the session keyword is used, the specified session counters are cleared. If the tunnel keyword is used, the specified session and tunnel counters are cleared. You cannot clear the VPDN tunnel counters without also clearing the VPDN session counters.

Examples

The following example shows output from the show vpdn command before and after the clear vpdn counters command is issued:

Router# show vpdn session packets interface virtual-access 8

L2TP Session Information Total tunnels 1 sessions 1 
PPTP session removal calls 0

LocID RemID TunID Pkts-In Pkts-Out Bytes-In Bytes-Out 
7     2     28240 10282   10287    431844   298235

Router# clear vpdn counters session interface virtual-access 8 

Clear "show vpdn" counters on this session [confirm]

Router# show vpdn session packets interface virtual-access 8

L2TP Session Information Total tunnels 1 sessions 1 
PPTP session removal calls 0

LocID RemID TunID Pkts-In Pkts-Out Bytes-In Bytes-Out 
7     2     28240 0       0        0        0

%No active L2F tunnels
%No active PPTP tunnels
%No active PPPoE tunnels

Related Commands

Command
Description

show vpdn

Displays information about active L2TP or L2F tunnels or sessions in a VPDN.


clear vpdn history failure

To clear the content of the failure history table, use the clear vpdn history failure command in EXEC mode.

clear vpdn history failure

Syntax Description

This command has no arguments or keywords.

Command Modes

EXEC

Command History

Release
Modification

11.3 T

This command was introduced.


Examples

The following example clears the content of the failure history table:

Router# clear vpdn history failure

clear vpdn redirect

To clear the redirect counters shown in the show vpdn redirect command output, use the clear vpdn redirect command in privileged EXEC mode.

clear vpdn redirect

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(8)B

This command was introduced.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T.


Usage Guidelines

Clear the previous display statistics regarding redirects and forwards before entering the show vpdn redirect command again.

Examples

The following example clears the redirect counters from a previously entered show vpdn redirect command:

Router# clear vpdn redirect

Related Commands

Command
Description

show vpdn redirect

Displays statistics for L2TP call redirects and forwards.

vpdn redirect

Enables L2TP redirect functionality.

vpdn redirect attempts

Restricts the number of redirect attempts possible for an L2TP call on the LAC.

vpdn redirect identifier

Indicates the name of the VPDN redirect identifier to use for L2TP call redirection.

vpdn redirect source

Configures the public redirect IP address of an LNS.


clear vpdn tunnel

To shut down a specifiedvirtual private dial-up network (VPDN) tunnel and all sessions within the tunnel, use the clear vpdn tunnel command in privileged EXEC mode.

L2TP or PPTP Tunnels

clear vpdn tunnel {pptp | l2tp} {all | hostname remote-name [local-name] | id local-id | ip local-ip-address | ip remote-ip-address}

L2F Tunnels

clear vpdn tunnel l2f {all | hostname nas-name hgw-name | id local-id | ip local-ip-address | ip remote-ip-address}

Syntax Description

pptp

Clears the specified Point-to-Point Tunneling Protocol (PPTP) tunnel.

l2tp

Clears the specified Layer 2 Tunneling Protocol (L2TP) tunnel.

all

Clears all VPDN tunnels terminating on the device.

hostname remote-name [local-name]

Clears all L2TP or PPTP VPDN tunnels established between the devices with the specified local and remote hostnames.

id local-id

Clears the VPDN tunnel with the specified local ID.

ip local-ip-address

Clears all VPDN tunnels terminating on the device with the specified local IP address.

ip remote-ip-address

Clears all VPDN tunnels terminating on the device with the specified remote IP address.

l2f

Clears the specified Layer 2 Forwarding (L2F) tunnel.

hostname nas-name hgw-name

Clears all L2F VPDN tunnels established between the network access server (NAS) and home gateway with the specified hostnames.


Command Modes

Privileged EXEC

Command History

Release
Modification

11.2

This command was introduced.

11.3(5)AA

The l2tp keyword was added.

12.0(1)T

The l2f keyword was added.

12.0(5)XE5

The pptp keyword was added.

12.1(5)T

The pptp keyword was updated for additional Cisco access servers or routers.

12.2(2)T

The syntax for this command was modified to include the following keywords and arguments:

all

hostname remote-name local-name

hostname nas-name hgw-name

id local-id

ip local-ip-address

ip remote-ip-address


Usage Guidelines

Manual termination of a VPDN tunnel results in the immediate shutdown of the specified VPDN tunnel and all sessions within that tunnel, resulting in a sudden disruption of VPDN services.

You can shut down VPDN tunnels more gradually by issuing the vpdn softshut command, which prevents the establishment of new VPDN sessions in all VPDN tunnels that terminate on the device. Existing VPDN sessions are not affected.

A manually terminated VPDN tunnel can be restarted immediately when a user logs in. Manually terminating and restarting a VPDN tunnel while VPDN event logging is enabled can provide useful troubleshooting information about VPDN session establishment. VPDN event logging is enabled by issuing the vpdn logging command.

Examples

The following example clears all L2TP tunnels connecting to a remote peer named NAS1:

Router# clear vpdn tunnel l2tp hostname NAS1

The following example clears all PPTP tunnels connecting the devices with the hostnames NAS3 and tun1:

Router# clear vpdn tunnel pptp NAS3 hostname tun1

The following example clears all L2F tunnels originating from the specified IP address:

Router# clear vpdn tunnel l2f ip 10.1.1.1

Related Commands

Command
Description

vpdn logging

Enables the logging of generic VPDN events.

vpdn softshut

Prevents new sessions from being established on a VPDN tunnel without disturbing existing sessions.


clid group

To add a calling line identifier (CLID) group to a discriminator, use the clid group command in CLID configuration mode. To remove a CLID group from a discriminator, use the no form of this command.

clid group {clid-group-name | default}

no clid group {clid-group-name | default}

Syntax Description

clid-group-name

Name of the CLID group added to the discriminator. You can add an existing CLID group or one that is to be defined. Discrimination does not happen until the CLID group is defined.

default

Default discrimination profile. Any CLID number coming in on a call is in its respective default group unless it is specifically assigned a CLID group name.


Defaults

CLID screening is not used.

Command Modes

CLID configuration

Command History

Release
Modification

12.1(5)T

This command was introduced.


Usage Guidelines

Use the clid group command to add a CLID group (which specifies the calls to reject) to the discriminator. If you use the default option, CLID call screening is not used.

Examples

The following example shows a call discriminator named "clidElim" created and configured to block digital calls from the CLID group named "zot".

resource-pool profile discriminator clidElim
 call-type digital
 clid group zot

Related Commands

Command
Description

call-type

Specifies the type of calls you want to block.

resource-pool profile discriminator

Creates a call discrimination profile and assigns it a name.


clock source line

To set the E1 line clock source for the Cisco AS5200 access server, use the clock source line command in controller configuration mode. To change or remove the clocking source, use the no form of this command.

clock source line {primary | secondary}

no clock source line {primary | secondary}

Syntax Description

primary

Primary TDM clock source.

secondary

Secondary TDM clock source.


Defaults

Primary TDM clock source is taken from the E1 controller 0 on the Cisco AS5200.

Secondary TDM clock source is taken from the E1 controller 1 on the Cisco AS5200.

Command Modes

Controller configuration

Command History

Release
Modification

11.1

This command was introduced.


Usage Guidelines

Configure the clock source line primary command on the controller that takes the most reliable clocking from an E1 line. Configure the clock source line secondary command on the controller that has the next best known clocking. With this configuration, the primary line clocking is backed up to the secondary line if the primary clocking shuts down.

Examples

The following example configures the Cisco AS5200 to use E1 controller 0 as the primary clocking source and the E1 controller 1 as the secondary clocking source:

controller e1 0
 framing esf 
 linecode hdb3
 pri-group timeslots 1-23
 clock source line primary
!
controller e1 1
 framing esf 
 linecode hdb3
 pri-group timeslots 1-23
 clock source line secondary

Related Commands

Command
Description

clear controller

Resets the T1 or E1 controller.

controller

Configures a T1 or E1 controller and enters controller configuration mode.

linecode

Selects the linecode type for T1 or E1 line.

show controllers e1

Displays information about the E1 links supported by the NPM
(Cisco 4000) or MIP (Cisco 7500 series).


copy modem

To copy modem firmware to integrated modems in an access server, use the copy modem command in EXEC mode.

copy {flash | tftp | rcp} modem

Syntax Description

flash

Flash memory.

tftp

Local TFTP server.

rcp

Local rcp server.


Command Modes

EXEC

Command History

Release
Modification

11.2

This command was introduced.


Usage Guidelines


Note The copy modem command is no longer available for MICA portware and 56K Microcom modems on Cisco AS5200 and AS5300 access servers. Use the spe command instead.

The Microcom V.34 modems and Cisco AS5200 V.110 terminal adapter will continue to use the copy modem command. On bootup, because these modems do not require download, the command displays the location of the firmware as "feature_card_flash."


After you enable this command, you are asked to provide the download destination (a slot/port or all), the remote host name, and the path leading to the source modem firmware.

If a modem that you want to upgrade is busy with a call when the copy modem command is enabled, the upgrade for that modem yields until the active call is dropped. All other idle modems in the upgrade range proceed with the downloading operation.

Examples

The following example copies the modem firmware file called modem_upgrade from the TFTP server called Modem_Server to modem 2/0, which is installed in a Cisco AS5200 access server:

Router# copy tftp modem

Modem Numbers (<slot>/<port>[-<slot>/<port>] | group <number> | all)? 2/0
Address or name of remote host [UNKNOWN]? Modem_Server
Source file name? dirt/elem/modem_upgrade
Accessing file 'dirt/elem/modem_upgrade on Modem_Server...
Loading dirt/elem/modem_upgrade .from 192.168.254.254 (via Ethernet0): ! [OK]

Loading dirt/elem/modem_upgrade from 192.168.254.254 (via Ethernet0): 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 237503/278528 bytes]

Router#
%MODEM-5-DL_START: Modem (2/0) started firmware download
%MODEM-5-DL_GOOD: Modem (2/0) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85

As shown in this example, you might want to upgrade and test one modem's firmware before upgrading the firmware of all the modems on the access server, as shown in the next example.

The following example downloads the same modem firmware file from the TFTP server to all the modems in the Cisco AS5200 access server:

Router# copy tftp modem

Modem Numbers (<slot>/<port>[-<slot>/<port>] | group <number> | all)? all
Address or name of remote host [UNKNOWN]? Modem_Server
Source file name? dirt/elem/modem_upgrade
Accessing file 'dirt/elem/modem_upgrade on Modem_Server...
Loading dirt/elem/modem_upgrade .from 192.168.254.254 (via Ethernet0): ! [OK]

Loading dirt/elem/modem_upgrade from 192.168.254.254 (via Ethernet0): 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 237503/278528 bytes]

Router#
%MODEM-5-DL_START: Modem (2/0) started firmware download
%MODEM-5-DL_START: Modem (2/1) started firmware download
%MODEM-5-DL_START: Modem (2/2) started firmware download
%MODEM-5-DL_START: Modem (2/3) started firmware download
%MODEM-5-DL_START: Modem (2/4) started firmware download
%MODEM-5-DL_START: Modem (2/5) started firmware download
%MODEM-5-DL_START: Modem (2/6) started firmware download
%MODEM-5-DL_START: Modem (2/7) started firmware download
%MODEM-5-DL_START: Modem (2/8) started firmware download
%MODEM-5-DL_START: Modem (2/9) started firmware download
%MODEM-5-DL_START: Modem (2/10) started firmware download
%MODEM-5-DL_START: Modem (2/11) started firmware download
%MODEM-5-DL_START: Modem (2/12) started firmware download
%MODEM-5-DL_START: Modem (2/13) started firmware download
%MODEM-5-DL_START: Modem (2/14) started firmware download
%MODEM-5-DL_START: Modem (2/15) started firmware download
%MODEM-5-DL_START: Modem (2/16) started firmware download
%MODEM-5-DL_START: Modem (2/17) started firmware download
%MODEM-5-DL_START: Modem (2/18) started firmware download
%MODEM-5-DL_START: Modem (2/19) started firmware download
%MODEM-5-DL_START: Modem (2/20) started firmware download
%MODEM-5-DL_START: Modem (2/21) started firmware download
%MODEM-5-DL_START: Modem (2/22) started firmware download
%MODEM-5-DL_START: Modem (2/23) started firmware download
%MODEM-5-DL_GOOD: Modem (2/2) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/10) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/4) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/6) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/7) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/12) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/11) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/13) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/1) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/14) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/19) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/22) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/5) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/8) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/9) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/17) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/0) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/3) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/21) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/16) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/15) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/18) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/20) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
%MODEM-5-DL_GOOD: Modem (2/23) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85

The following example copies the modem firmware file called STAR.M from Flash memory to the integrated modem 1/2:

Router# copy flash modem

Modem Numbers (<slot>/<port> | group <number> | all)? 1/2

System flash directory:
File  Length   Name/status
  1   3539820  as5200-i-m.allcookies  
  2   239203   STAR.M  
  3   23072    BOOT.105 [3802288 bytes used, 4586320 available, 8388608 total]
Source file name? STAR.M
Router#
%MODEM-5-DL_START: Modem (1/2) started firmware download
%MODEM-5-DL_GOOD: Modem (1/2) completed firmware download: 
MNPClass10V.34/V.FCModemRev1.0.23/85.23/85
Router

Related Commands

Command
Description

copy

Copies any file from a source to a destination.

spe

Enters SPE configuration mode and sets the range of SPEs.


corlist incoming

To specify the class of restrictions (COR) list to be used when a specified dial peer acts as the incoming dial peer, use the corlist incoming command in dial-peer configuration mode. To clear the previously defined incoming COR list in preparation for redefining the incoming COR list, use the no form of this command.

corlist incoming cor-list-name

no corlist incoming cor-list-name

Syntax Description

cor-list-name

Name of the dial peer COR list that defines the capabilities that the specified dial peer has when it is used as an incoming dial peer.


Defaults

No default behavior or values.

Command Modes

Dial-peer configuration

Command History

Release
Modification

12.1(3)T

This command was introduced.


Usage Guidelines

The dial-peer cor list and member commands define a set of capabilities (a COR list). These lists are used in dial peers to indicate the capability set that a dial peer has when it is used as an incoming dial peer (the corlist incoming command) or to indicate the capability set that is required for an incoming dial peer to make an outgoing call through the dial peer (the corlist outgoing command). For example, if dial peer 100 is the incoming dial peer and its incoming COR list name is list_100, dial peer 200 has list_200 as the outgoing COR list name. If list_100 does not include all the members of list_200 (that is, if list_100 is not a superset of list_200), it is not possible to have a call from dial peer 100 that uses dial peer 200 as the outgoing dial peer.

Examples

In the following example, incoming calls from 526.... are blocked from being switched to outgoing calls to 1900.... because the COR list for the incoming dial peer (list2) is not a superset of the COR list for the outgoing dial peer (list1):

dial-peer list list1
 member 900_call

dial-peer list list2
 member 800_call
 member other_call

dial-peer voice 526 pots
 answer-address 408526....
 corlist incoming list2
 direct-inward-dial

dial-peer voice 900 pots
 destination pattern 1900.......
 direct-inward-dial
 trunkgroup 101
 prefix 333
 corlist outgoing list1

Related Commands

Command
Description

corlist outgoing

Specifies the COR list to be used by outgoing dial peers.

dial-peer cor list

Defines a COR list name.

member

Adds a member to a dial peer COR list.


corlist outgoing

To specify the class of restrictions (COR) list to be used by outgoing dial peers, use the corlist outgoing command in dial-peer configuration mode. To clear the previously defined outgoing COR list in preparation for redefining the outgoing COR list, use the no form of this command.

corlist outgoing cor-list-name

no corlist outgoing cor-list-name

Syntax Description

cor-list-name

Required name of the dial peer COR list for outgoing calls to the configured number using this dial peer.


Defaults

No default behavior or values.

Command Modes

Dial-peer configuration

Command History

Release
Modification

12.1(3)T

This command was introduced.


Usage Guidelines

If the COR list for the incoming dial peer is not a superset of the COR list for the outgoing dial peer, calls from the incoming dial peer cannot use that outgoing dial peer.

Examples

In the following example, incoming calls from 526.... are blocked from being switched to outgoing calls to 1900.... because the COR list for the incoming dial peer (list2) is not a superset of the COR list for the outgoing dial peer (list1):

dial-peer list list1
member 900_call

dial-peer list list2
 member 800_call
 member other_call

dial-peer voice 526 pots
 answer-address 408526....
 corlist incoming list2
 direct-inward-dial

dial-peer voice 900 pots
 destination pattern 1900.......
 direct-inward-dial
 trunk group 101
 prefix 333
 corlist outgoing list1

cpp authentication


Note Effective with release 12.3(4)T, the cpp authentication command is no longer available in Cisco IOS software.


To enable negotiation of authentication with a router or bridge that supports the Combinet Proprietary Protocol (CPP) and that is calling in to this router, use the cpp authentication command in interface configuration mode. To disable negotiation of CPP authentication, use the no form of this command.

cpp authentication

no cpp authentication

Syntax Description

This command has no arguments or keywords.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Release
Modification

11.2

This command was introduced.

12.3(4)T

This command was removed and is no longer available in Cisco IOS software.


Usage Guidelines

Use this command for authenticating the device that is calling in to this router.

Use this command to communicate over an ISDN interface with Cisco 700 and 800 series (formerly Combinet) routers that do not support PPP but do support the CPP.

Since most Cisco routers support PPP, Cisco routers can communicate over ISDN with CPP devices by using PPP encapsulation, which supports both routing and fast switching.

This command is supported on ISDN and dialer interfaces.

This command uses names and passwords from the username password command. It does not support TACACS.

Examples

The following example configures a PRI to communicate with a bridge that does not support PPP:

controller t1 1/1
 framing esf 
 linecode b8zs
 pri-group timeslots 1-23
 isdn switchtype primary-4ess

interface Serial1/1:23
 encapsulation cpp
 cpp callback accept 
 cpp authentication

The following example configures a BRI to communicate with a bridge that does not support PPP:

interface bri 0 
 encapsulation cpp 
 cpp callback accept 
 cpp authentication

Related Commands

Command
Description

cpp callback accept

Enables the router to accept callback from a router or bridge that supports the CPP.

encapsulation cpp

Enables encapsulation for communication with routers or bridges using the CPP.


cpp callback accept


Note Effective with release 12.3(4)T, the cpp callback accept command is no longer available in Cisco IOS software.


To enable the router to accept callback from a router or bridge that supports the Combinet Proprietary Protocol (CPP), use the cpp callback accept command in interface configuration mode. To disable callback acceptance, use the no form of this command.

cpp callback accept

no cpp callback accept

Syntax Description

This command has no arguments or keywords.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Release
Modification

11.2

This command was introduced.

12.3(4)T

This command was removed and is no longer available in Cisco IOS software.


Usage Guidelines

Use this command to communicate over an ISDN interface with Cisco 700 and 800 series (formerly Combinet) routers that do not support PPP but do support CPP.

Currently, most Cisco routers do support PPP. Cisco routers can communicate over ISDN with these devices by using PPP encapsulation, which supports both routing and fast switching.

This command is supported on ISDN and dialer interfaces.

Examples

The following example configures the PRI serial interface 1/1:23 to communicate with a router or bridge that does not support PPP:

controller t1 1/1
 framing esf 
 linecode b8zs
 pri-group timeslots 1-23
 isdn switchtype primary-4ess
!
interface Serial1/1:23
 encapsulation cpp
 cpp callback accept
 cpp authentication

The following example configures BRI 0 to communicate with a router or bridge that does not support PPP:

interface bri 0 
 encapsulation cpp
 cpp callback accept
 cpp authentication

Related Commands

Command
Description

cpp authentication

Enables negotiation of authentication with a router or bridge that supports the CPP and that is calling in to this router.

encapsulation cpp

Enables encapsulation for communication with routers or bridges using the CPP.