Table Of Contents

Preparing AUSM and MPSM Lines and Ports for Communications

Preparing for Provisioning

Quickstart Provisioning Procedures

MPSM Interface and Service Configuration Quickstart

Moving MPSM Feature Licenses Quickstart

AUSM and MPSM Line Configuration Quickstart

ATM Port Configuration Quickstart

IMA Group Configuration Quickstart

General AUSM and MPSM Provisioning Procedures

Selecting MPSM Interfaces and Services

Displaying Lines

Bringing Up Lines

Configuring Lines

Adding ATM Ports

Configuring Inverse Multiplexing over ATM

Adding IMA Groups

Preparing AUSM and MPSM Lines and Ports for Communications

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This chapter describes how to bring up physical lines and add logical ports on AUSM, MPSM-8T1-ATM, and MPSM-8E1-ATM cards by using the command-line interface (CLI).

This chapter provides a quickstart procedure for preparing AUSM, MPSM-8T1-ATM, and MPSM-8E1-ATM cards and lines for communications, and describes the following procedures:

•"Bringing Up Lines"

•"Configuring Lines"

•"Adding ATM Ports"

•"Configuring Inverse Multiplexing over ATM"

•"Adding IMA Groups"

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Note AUSM and MPSM cards, lines, and ports can also be configured using the Cisco WAN Manager (CWM) application. For configuration instructions, refer to the Cisco WAN Manager User's Guide, Release 15.

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Note The easiest way to add connections is by using the Cisco WAN Manager application. For full details on how to set up a connection through the Cisco WAN Manager GUI, refer to the Cisco WAN Manager User's Guide, Release 15.1.

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Table 2-1 describes the configuration tasks required to bring up lines and ports on AUSM and MPSM cards.

Table 2-1 Line and Port Configuration on AUSM and MPSM Cards 

Configuration Task	Description
Bring up physical lines	Lines establish physical layer connectivity between an AUSM or MPSM port and the same port type (T1, for example) on another device.
Add logical ports	Ports establish ATM communications over a line to ATM customer premises equipment (CPE).

To eliminate redundancy and help experienced users complete configuration tasks quickly and efficiently, this chapter provides configuration quickstart procedures.

The first time you configure a connection type, use the applicable quickstart procedure to get an overview of the tasks to be performed. Then, for more detailed instructions, consult the appropriate section(s) elsewhere in the document that are called out in the quickstart procedure. As you gain experience in configuring AUSM and MPSM lines and ports, referring to a quickstart procedure may suffice for performing a particular configuration task.

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Tip You can get information about most CLI commands by entering the command without parameters. Ordinarily, experienced users can configure AUSM and MPSM card connections using just the quickstart procedures and the online help facilities.

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Note For a detailed description of the commands used in this chapter, refer to Chapter 6, "AUSM and MPSM Command Reference."

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Preparing for Provisioning

Before you begin configuring lines and ports on AUSM and MPSM cards, you need to initialize the cards you plan to provision.The MPSM card must be configured for the interface type and service type through the use of the PXM cnfcdmode command and also requires the management of feature licenses. After you configure the card mode and feature licenses, you need to develop and implement a plan for the card redundancy, line redundancy, and bulk distribution options available for each service module. This plan determines how service modules and their back cards must be installed in the chassis, and how lines must connect to the cards before software configuration starts. Without a plan developed for these services, a configuration change for any of these services has the potential to interrupt service, and can require substantial configuration teardown.

The AUSM and MPSM cards support 1:N card redundancy and bulk distribution through the support of Service Resource Module (SRM) cards. Line redundancy is available to those service modules that support bulk distribution through use of the SRME or SRME/B card with an optical back card. For an overview of the features that the SRM card provides to the AUSM and MPSM cards, see "Introduction."

For information on MPSM feature licenses, see the "Managing MPSM Feature Licenses" section in Chapter 5, "Managing AUSM and MPSM Cards."

For instructions on initializing cards and configuring card redundancy, line redundancy, bulk distribution, and license management, refer to the Cisco MGX 8800/8900 Series Configuration Guide, Release 5.2, the Release Notes for Cisco MGX 8230, Cisco MGX 8250, and Cisco MGX 8850 (PXM1) Switches, Release 1.3.12, and the Cisco MGX 8850 Edge Concentrator Installation and Configuration, Release 1.1.3.

Quickstart Provisioning Procedures

The following quickstarts contain abbreviated procedures for provisioning the line and port capabilities of AUSM and MPSM cards installed in Cisco MGX 8230, Cisco MGX 8250, Cisco MGX 8850 (PXM1), Cisco MGX 8850 (PXM1E/PXM45) and Cisco MGX 8830 (PXM1E/PXM45) Release 5.1 and Release 1.3 switches:

•MPSM Interface and Service Configuration Quickstart

•Moving MPSM Feature Licenses Quickstart

•AUSM and MPSM Line Configuration Quickstart

•ATM Port Configuration Quickstart

•IMA Group Configuration Quickstart

These procedures provide a high level overview and serve as a procedural reminder for users already experienced in configuring MGX switches.

MPSM Interface and Service Configuration Quickstart

To select the interface and service type on the MPSM-8T1E1 card, perform the following steps:

	Command	Purpose
Step 1	username <password>	Start a configuration session on the PXM processor card. Note To perform the steps in this quickstart procedure, you must log in as a user with SERVICE_GP privileges or higher.
Step 2	cnfcdmode <options> Related commands: dspcd <slot> dspcds	This step allows you to configure the interface and service type of the MPSM-8T1E1 card. Select the back card interface type (T1 or E1) and select the service (ATM, Frame Relay, or Circuit Emulation) this card will support. See the "Selecting MPSM Interfaces and Services" section that appears later in this chapter. Note The cnfcdmode command is performed on the PXM processor card, not the MPSM-8T1E1 card.

Moving MPSM Feature Licenses Quickstart

To move MPSM feature licenses from the MPSM-8T1E1 card into the PXM license pool, perform the following steps:

	Command	Purpose
Step 1	username <password>	Start a configuration session.
Step 2	dspliccd	View the feature licenses that have been installed on the MPSM-8T1E1 card. See the "Displaying MPSM Feature Licenses" section in Chapter 5, "Managing AUSM and MPSM Cards."
Step 3	movelic	Move the MPSM feature licenses programmed on the MPSM-8T1E1 card to the switch license pool on the PXM processor card. See the "Moving MPSM Feature Licenses" section in Chapter 5, "Managing AUSM and MPSM Cards."
Step 4	dsplics Related commands: cnflic <options> dspliccds dspliccd <slot> dsplicalms Note These related commands are performed on the PXM processor card, not the MPSM-8T1E1 card.	View the MPSM feature licenses installed in the PXM license pool. See the "Moving MPSM Feature Licenses" section in Chapter 5, "Managing AUSM and MPSM Cards." Note The dsplics command is performed on the PXM processor card, not the MPSM-8T1E1 card.

To install spare feature licenses into the PXM license pool, transfer feature licenses from one switch to another switch, and resolve feature license alarms, refer to the Cisco MGX 8800/8900 Series Configuration Guide, Release 5.2 and the Release Notes for Cisco MGX 8230, Cisco MGX 8250, and Cisco MGX 8850 (PXM1) Switches, Release 1.3.12

AUSM and MPSM Line Configuration Quickstart

To add a line to an AUSM, MPSM-8T1-ATM, or MPSM-8E1-ATM card, perform the following steps:

	Command	Purpose
Step 1	username <password>	Start a configuration session. Note To perform the steps in this quickstart procedure, you must log in as a user with GROUP1 privileges or higher.
Step 2	addln <line> Related commands: dsplns dspln <line> delln <line>	Bring up a line. This step establishes physical layer connectivity between an MGX switch and an ATM device. See the "Bringing Up Lines" section that appears later in this chapter.
Step 3	cnfln <options> Related commands: dsplns dspln <line> delln <line> xcnfln <options>	This optional step allows you to change a line configuration when the default or existing configuration needs changing. See the "Configuring Lines" section that appears later in this chapter.

ATM Port Configuration Quickstart

An ATM port is a logical entity that adds ATM layer communications to a physical line that connects an MGX 8850 switch to a CPE ATM device (which, in most cases, is a router).

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Note The equipment at both ends of an ATM line must be configured with compatible settings in order for the link to be logically completed.

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To configure an ATM port on an AUSM, MPSM-8T1-ATM, or MPSM-8E1-ATM card, perform the following steps:

	Command	Purpose
Step 1	username <password>	Start a configuration session. Note To perform all the steps in this quickstart procedure, you must log in as a user with GROUP1 privileges or higher.
Step 2	addln <line>	Prepare an AUSM or MPSM line for communication. See "AUSM and MPSM Line Configuration Quickstart," which appears earlier in this chapter.
Step 3	addport <options> Related commands: dspport <port> dspports xcnfport	Add an ATM port. This step establishes ATM communications between two ATM devices. See the "Adding ATM Ports" section that appears later in this chapter.

IMA Group Configuration Quickstart

An Inverse Multiplexing for ATM (IMA) group is a logical entity (which is similar to an ATM port) that adds ATM layer communications to a group of physical lines that connect an MGX switch to a CPE ATM device (which, in most cases, is a router). The physical lines in an IMA group collectively support a throughput roughly equal to the sum of the throughputs for the individual lines. For example, a single T1 line can support about 3,591 cells per second (cps). If you create an IMA group of 4 T1 lines, the group can support up to 14,364 cps. You can define an IMA group to include up to 8 lines for a maximum T1 throughput of 28,728 cps.

To create an IMA group, perform the following steps:

	Command	Purpose
Step 1	username <password>	Start a configuration session. Note To perform the steps in this quickstart procedure, you must log in as a user with GROUP1 privileges or higher.
Step 2	addln <line> Related commands: dsplns dspln <line> delln <line>	Bring up all lines that will be added to the IMA group. See the "Bringing Up Lines" section that appears later in this chapter.
Step 3	cnfln <options> Related commands: dsplns dspln <line> delln <line>	This optional step allows you to change a line configuration when the default or existing configuration needs changing. See the "Configuring Lines" section that appears later in this chapter.
Step 4	addimagrp <options> Related commands: dsplns dspimagrps delimagrp	Define the lines that will be used by a single IMA group. See the "Adding IMA Groups" section that appears later in this chapter.
Step 5	cnfimagrp <options> Related commands: dspimagrps dspimagrp	This optional step allows you to change an IMA group configuration when the default or existing configuration needs changing. See the "Configuring IMA Groups" section that appears in Chapter 5, "Managing AUSM and MPSM Cards.".

General AUSM and MPSM Provisioning Procedures

This section describes the following procedures for configuring AUSM and MPSM card communications:

•Selecting MPSM Interfaces and Services

•Displaying Lines

•Bringing Up Lines

•Configuring Lines

•Adding ATM Ports

•Configuring Inverse Multiplexing over ATM

Selecting MPSM Interfaces and Services

Use the PXM cnfcdmode command as described in the following procedure to configure MPSM-8T1E1 interfaces and services:

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Step 1 Establish a configuration session using a user name with SERVICE_GP privileges or higher.

Step 2 Enter the cnfcdmode command using the following format:

M8850_SF.7.PXM.a > cnfcdmode <slotNo> <ifType> <serviceType>

To use this command, the MPSM-8T1E1 card must be in the standby state with no configuration and not in a redundancy group. Table 2-2 defines the parameters for this command.

Table 2-2 cnfcdmode Command Parameters

Parameter	Description
slotNo	Enter the number for the slot in which the MPSM-8T1E1 card is installed.
ifType	Enter a number from the following list that selects the interface type to be used with the MPSM-8T1E1: •T1 Interface = 1 •E1 Interface = 2 •T3 Interface = 3 (Not applicable to the MPSM-8T1E1) •E3 Interface = 4 (Not applicable to the MPSM-8T1E1)
serviceType	Enter a number from the following list that selects the service the MPSM-8T1E1 will support: •Frame Relay Service = 1 •ATM Service = 2 •CES Service = 3

The following example shows how to configure an MPSM-8-T1E1 card to use a T1 interface and ATM services:

M8850_R1.1.7.PXM.a > cnfcdmode 22 1 2

You are about to configure MPSM in slot 22 to : 

Service Type : ATM Interface Type : T1

Do you want to proceed (Yes/No)? y

M8850_R1.1.7.PXM.a > 

After you set the interface type and service type, the card resets and the card state changes from Standby/Active to Active/Active.

Step 3 You can verify that the PXM cnfcdmode command has been run by looking at the Inserted Card row of the PXM dspcd <slot> command display.

Before configuring the MPSM-8-T1E1 for ATM services, the Inserted Card row displays the generic name MPSM-8T1E1. After configuration, the generic name changes to a specific name such as MPSM-8T1-ATM or MPSM-8E1-ATM.

Table 2-3 lists the MPSM card names and what they mean when they appear in the PXM dspcd and dspcds command displays.

Table 2-3 MPSM-8-T1E1 Card Names in the PXM dspcd and dspcds Command Displays

Card Name	Description
MPSM-8T1E1	No service configured on card.
MPSM-8T1-ATM	Configured for ATM services and T1 interfaces.
MPSM-8E1-ATM	Configured for ATM services and E1 interfaces.
MPSM-8T1-CES	Configured for Circuit Emulation services and T1 interfaces.
MPSM-8E1-CES	Configured for Circuit Emulation services and E1 interfaces.
MPSM-8T1-FRM	Configured for Frame Relay services and T1 interfaces.
MPSM-8E1-FRM	Configured for Frame Relay services and E1 interfaces.

For more information on use of the PXM cnfcdmode command, refer to the Cisco MGX 8800/8900 Series Configuration Guide, Release 5.2, the Cisco MGX 8800/8900 Series Command Reference, Release 5.2, the Release Notes for Cisco MGX 8230, Cisco MGX 8250, and Cisco MGX 8850 (PXM1) Switches, Release 1.3.12, and the Cisco MGX 8850 Edge Concentrator Installation and Configuration, Release 1.1.3 documentation.

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Displaying Lines

To display all lines on an AUSM or MPSM card, perform the following steps:

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Step 1 Establish a configuration session using a user name with GROUP 1 privileges or higher.

Step 2 Enter the dsplns command to display the current configuration for all lines on an AUSM, MPSM-8T1-ATM, or MPSM-8E1-ATM card, as shown in the following example:

M8830_CH.1.13.AUSMB8.a > dsplns

  Line  Conn      Type     Status/Coding      Length     XmtClock Alarm Stats

        Type                                             Source         Alarm

  ----  ----- ------------ ------ -------- ------------- -------- ----- -----

  13.1  RJ-48 dsx1ESF         Ena/dsx1B8ZS 0-131 ft      LocalTim  Yes   No 

  13.2  RJ-48 dsx1ESF         Ena/dsx1B8ZS 0-131 ft      LocalTim  Yes   No 

  13.3  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.4  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.5  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.6  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.7  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.8  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  LineNumOfValidEntries: 8

M8830_CH.1.13.AUSMB8.a > 

The alarm state indicates whether the line is communicating with a remote switch. When the alarm state is blank or is reported as No, it indicates that the physical devices at each end of the line have established physical layer communications. Higher-layer connectivity is established later when ports are configured on the AUSM and MPSM card lines.

Step 3 Enter a dspln command to display the configuration information for a particular line, as shown in the following example:

M8830_CH.1.13.AUSMB8.a > dspln 1

  LineNum:                   1

  LineConnectorType:         RJ-48

  LineType:                  dsx1ESF

  LineEnable:                Enabled

  LineCoding:                dsx1B8ZS

  LineLength:                0-131 ft

  LineXmtClockSource:        LocalTiming

  LineLoopbackCommand:       NoLoop

  LineSendCode:              NoCode

  LineUsedTimeslotsBitMap:   0xffffff

  LineLoopbackCodeDetection: codeDetectDisabled

  LineBERTEnable:            Disable

  LineNumOfValidEntries: 8

M8830_CH.1.13.AUSMB8.a > 

This sample dspln command shows the configuration parameters of a T1 line for a AUSM card.

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Bringing Up Lines

Installing an AUSM or MPSM card can add up to 8 physical lines to your switch. You must bring up a line before you can configure it or provision ATM services on the line.

Before a line is brought up, or after it is brought down, the switch does not monitor the line. Prior to bringing up a line, the AUSM or MPSM port status light for the line is unlit, and all line alarms are cleared.

When you bring up a line on an AUSM or MPSM card, the switch starts monitoring the line. The AUSM or MPSM card port status light turns green when physical layer connectivity is established with a remote device. If a physical layer communications problem occurs, the port status light turns red, and an alarm is reported.

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Tip To minimize the number of alarms reported and to reduce the frequency of failed port status lamps (which display red), keep lines down until they are actually needed for communication.

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To bring up an AUSM or MPSM line on an MGX switch, perform the following steps:

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Step 1 Establish a configuration session using a user name with GROUP 1 privileges or higher.

Step 2 Enter the cc command to select the AUSM or MPSM card on which you want to bring up a line, as shown in the following example:

PXM1E_SJ.1.7.PXM.a > cc <slotnumber>

Replace the <slotnumber> parameter with the number of the slot in which the AUSM or MPSM card is installed.

Step 3 Enter the dsplns command to check which lines on the card are available to bring up.

Step 4 Enter the addln command to activate a line on the AUSM or MPSM card, as shown in the following example:

PXM1E_SJ.1.5.AUSMB8.a > addln <line>

Replace the <line> parameter with the number corresponding to the back card port to which the line is connected. Table 2-4 lists the valid line numbers for the AUSM and MPSM cards.

Table 2-4 Valid AUSM and MPSM Line Numbers

Front Card	Valid Line Numbers
AUSM-8T1/B	1 to 8
AUSM-8E1/B	1 to 8
MPSM-8T1	1 to 8
MPSM-8E1	1 to 8

The following example brings up a line with the default parameters:

PXM1E_SJ.1.5.AUSMB8.a > addln 1 

PXM1E_SJ.1.5.AUSMB8.a >

Step 5 Enter the dsplns command to verify that the line has been successfully brought up, as shown in the following example:

PXM1E_SJ.1.5.AUSMB8.a > dsplns

  Line  Conn      Type     Status/Coding      Length     XmtClock Alarm Stats

        Type                                             Source         Alarm

  ----  ----- ------------ ------ -------- ------------- -------- ----- -----

  13.1  RJ-48 dsx1ESF         Ena/dsx1B8ZS 0-131 ft      LocalTim  Yes   No 

  13.2  RJ-48 dsx1ESF         Ena/dsx1B8ZS 0-131 ft      LocalTim  Yes   No 

  13.3  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.4  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.5  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.6  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.7  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  13.8  RJ-48 dsx1ESF         Dis/dsx1B8ZS 0-131 ft      LocalTim           

  LineNumOfValidEntries: 8

PXM1E_SJ.1.5.AUSMB8.a >

When a line has been successfully brought up, the status column reports the line status as Ena, which is an abbreviation for enabled. Lines that have nor been brought up are reported as Dis in the status column, which is an abbreviation for disabled.

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Configuring Lines

All line types are brought up with a default configuration, which may or may not be compatible with the ATM device to which you are connecting. When configuring an AUSM or MPSM card line, you must ensure that the devices at both ends of the connection are using the same configuration parameters on the shared line.

To configure lines on an AUSM or MPSM card, perform the following steps:

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Step 1 Establish a configuration session using a user name with GROUP 1 privileges or higher.

Step 2 If you do not know the line number you want to configure on the AUSM or MPSM card, enter the dsplns command to display the current configuration of all lines on the card:

PXM1E_SJ.1.5.AUSMB8.a > dsplns 

Remember that you cannot configure a line until you have brought it up, as described earlier in the "Bringing Up Lines" section.

Step 3 Enter the dspln command to display the configuration information for the particular line that you want to configure, as shown in the following example:

PXM1E_SJ.1.5.AUSMB8.a > dspln 1

LineNum:                   1

  LineConnectorType:         RJ-48

  LineType:                  dsx1ESF

  LineEnable:                Enabled

  LineCoding:                dsx1B8ZS

  LineLength:                0-131 ft

  LineXmtClockSource:        LocalTiming

  LineLoopbackCommand:       NoLoop

  LineSendCode:              NoCode

  LineUsedTimeslotsBitMap:   0xffffff

  LineLoopbackCodeDetection: codeDetectDisabled

  LineBERTEnable:            Disable

  LineNumOfValidEntries: 8

PXM1E_SJ.1.5.AUSMB8.a > 

In the above example, the dspln command shows the configuration parameters for the T1 line
number 1 on an AUSM card.

Step 4 Enter the cnfln command as follows to configure a line on an AUSM or MPSM card:

PXM1E_SJ.1.5.AUSMB8.a > cnfln <line_num> <line_code> <line_len> <clk_src> [E1-signalling]

Table 2-5 describes the parameters that you use in configuring T1 and E1 lines on an AUSM or MPSM card.

Table 2-5 cnfln Command Parameters

Parameter	Description
line_num	Enter the number of the line you want to configure. Use the dsplns command to display the available lines.
line_code	Select the line coding: •B8ZS (T1) = 2 •HDB3 (E1) = 3
line_len	Enter the length of the line: •T1 range: –0 to 131 feet = 10 –131 to 262 feet = 11 –262 to 393 feet = 12 –393 to 524 feet = 13 –524 to 655 feet = 14 –>655 feet = 15 •E1 (with SMB line module) = 8 •E1 (with RJ48 line module) = 9
clk_src	DSX1 clock source. •1 = loop clock •2 = local clock
E1-signalling T1-Linetype	This option selects E1 signalling methods or T1 Line types. Enter the keyword for the signalling combination listed below. E1 Signalling Methods: •CAS, no CRC = CAS •CAS with CRC = CAS_CRC •CCS, no CRC = CCS •CCS, with CRC = CCS_CRC •Clear E1 = CLEAR Note To support unstructured E1 communications (see the addport command), you must set the E1 signalling to CLEAR. T1 Signalling Types: •Dsx1ESF - ESF (MPSM only) •Dsx1D4 (SF) = D4 (MPSM only)

Step 5 Enter the dspln command to verify the line configuration changes made in Step 4.

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Note The xcnfln command may also be used to configure lines on AUSM and MPSM cards. For more information on the use of the xcnfln command, see Chapter 6, "AUSM and MPSM Command Reference."

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Adding ATM Ports

The "Bringing Up Lines" section that appears earlier in this chapter describes how to bring up physical lines by specifying the correct line port number. Line ports correspond to the line connectors on the back cards of Cisco MGX 8230, Cisco MGX 8250, Cisco MGX 8850 (PXM1), Cisco MGX 8850 (PXM1E/PXM45), or Cisco MGX 8830 (PXM1E/PXM45) switches.

Bringing up a line establishes physical layer connectivity between two network devices. When you add an ATM port to a line, you enable ATM communications over that line.

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Note The AUSM, MPSM-8T1-ATM, and MPSM-8E1-ATM cards support Inverse Multiplexing over ATM (IMA) ports. To add and configure an IMA port to a line on an AUSM, MPSM-8T1-ATM, or MPSM-8E1-ATM card, see the "Configuring Inverse Multiplexing over ATM" section later in this chapter. Keep in mind that an IMA license is required before you can add IMA ports on an MPSM-8T1-ATM or MPSM-8E1-ATM card. The AUSM card does not require a license for IMA configuration.

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To add a ATM port to a line, perform the following steps:

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Step 1 Establish a configuration session using a user name with GROUP1 privileges or higher.

Step 2 Enter the dsplns command to determine the line number on which you intend to add the ATM port.

Step 3 Enter the dspports command to display a list of configured ports on the AUSM or MPSM card, as shown in the following example. Verify that the port number you want to use is not already in use.

PXM1E_SJ.1.1.AUSMB8.a > dspports

  List of ATM ports:

  ==================

  Port PortType Line# Portenable  Speed  PortState                

  ---- -------- ----- ----------  -----  ---------                

  1.5   NNI      5    UP           3622  Line alarm               

  1.6   NNI      6    UP           3622  Line alarm               

  1.7   UNI      7    UP           3622  Line alarm               

  1.8   UNI      8    UP           3622  Line alarm               

 List of IMA groups:

 ===================

ImaGrp PortType Conf  Avail  Lines configured  Lines present  Tol Diff  Port State

                rate  rate                                    Delay(ms)           

------ -------- ----- -----  ---------------  --------------- --------- ----------

 1.1    NNI     14364 14364  1.2.3.4          1.2.3.4          275      Active

  NextPortNumAvailable:  3

ImaGrp          Sync State

------          ----------

 1.1            Far-End Permanent

Syntax : dspports

PXM1E_SJ.1.1.AUSMB8.a >

In the above example, the Port column shows that ports 5 through 8 have been configured as ATM ports on the current card. In addition, the List of IMA groups shows that port 1 has been configured for an IMA group. In this example, the remaining available port numbers are 2, 3, and 4.

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Note An IMA group serves as a single ATM port operating over multiple physical lines. When you assign a group number to an IMA group, that number serves as the ATM port number. Therefore, you cannot use the same number for both an ATM port and an IMA group.

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Step 4 Enter the addport command as follows to add an ATM port to an AUSM or MPSM card:

PXM1E_SJ.1.1.AUSMB8.a > addport <port_num> <port_type> <line_num>

Table 2-6 lists and describes the addport command parameters.

Table 2-6 Parameters for the addport Command 

Parameter or Option	Description
port_num	Port number for the ATM service. The port number range is 1 to 8. Note The available port numbers are shared by ATM ports and IMA groups. If a port number is in use as either an ATM port number or as an IMA group number, that port number cannot be used for other ATM ports or IMA groups.
port_type	Indicates the type of ATM service that this port will support: •UNI = 1 •NNI = 2
line_num	Line number to which the port definition applies, in the range from 1 to 8. Enter the dsplns command to display the lines that have been added. You cannot add a port to a line unless the Status/Coding column shows that the line is enabled (Ena). Note If a line is assigned to an IMA group, you cannot use that line for an ATM port unless you remove the line from the IMA group.

The following addport command example defines ATM port 7 as a UNI port on line 7.

PXM1E_SJ.1.1.AUSMB8.a > addport  7 1 7

PXM1E_SJ.1.1.AUSMB8.a >

Step 5 Enter the dspport command as follows to display the configuration information for a specific port:

PXM1E_SJ.1.1.AUSMB8.a > dspport <port>

Replace the <port> parameter with the number assigned to the port during configuration.

The following example shows the output of the dspport command for port number 7:

PXM1E_SJ.1.1.AUSMB8.a > dspport 7

  LogicalPortNumber:             7

  Port Enable:                   UP

  Port State:                    Line alarm

  PortType:                      UNI

  PhysicalPortNumber:            7

  CellFraming:                   ATM

  CellScramble:                  No Scramble

  Plpp Loopback:                 No Loopback

  Single-bit error correction:   Disabled

PXM1E_SJ.1.1.AUSMB8.a >

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Tip To change the port configuration, enter the cnfport command. To delete the port configuration, enter the delport command. For more information about these commands, refer to Chapter 6, "AUSM and MPSM Command Reference".

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Configuring Inverse Multiplexing over ATM

Inverse Multiplexing over ATM (IMA) is a protocol that runs on the AUSM, MPSM-8T1-ATM, and MPSM-8E1-ATM cards. IMA allows you to combine multiple T1 or E1 interfaces into a single, high-speed IMA interface. These combinations of multiple links are called IMA groups. IMA groups are comprised of IMA links.

The AUSM, MPSM-8T1-ATM, and MPSM-8E1-ATM cards support a maximum of 8 IMA groups.

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Note The MPSM-8T1-ATM and MPSM-8E1-ATM cards require a license for IMA configuration. Without an IMA license, you cannot configure IMA on the MPSM-8T1-ATM or MPSM-8E1-ATM card. Enter the dspliccd command to view the feature licenses that have been assigned to or are needed by the MPSM-8T1-ATM or MPSM-8E1-ATM card.

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IMA is also supported on the following cards:

•PXM1E-16-T1E1 (supports a maximum of 16 IMA groups in the bottom bay only)

•MPSM-T3E3-155 (supports a maximum of 42 IMA groups)

•MGX-AXSM-32-T1E1-E (supports a maximum of 16 IMA groups in the top bay, and 16 groups in the bottom bay)

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Note For information on PXM1E IMA, refer to the Cisco MGX 8800/8900 Series Configuration Guide, Release 5.2.

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Note For information on AUSM IMA, refer to the Cisco ATM Services (AUSM/MPSM-8-T1E1) Configuration Guide and Command Reference for MGX Switches, Release 5.2.

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Note For information on AXSM IMA, refer to the Cisco ATM Services (AXSM) Configuration Guide and Command Reference for MGX Switches, Release 5.2.

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The section that follows provides a detailed procedure for adding and configuring IMA on MPSM-8T1-ATM, MPSM-8E1-ATM, and AUSM ports.

Adding IMA Groups

An IMA group is an ATM logical port that spans multiple physical lines. To create an IMA group, use the following procedure:

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Step 1 Establish a configuration session using a user name with GROUP 1 privileges or higher.

Step 2 If you do not know the line numbers that you want to group, enter the dsplns command to display the status of all lines on the card:

PXM1E_SJ.1.5.AUSMB8.a > dsplns 

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Note You cannot add a line to an IMA group until you have brought it up, as described earlier in the "Bringing Up Lines" section. To configure a line, refer to the "Configuring Lines" section.

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Step 3 Enter the addimagrp (or addaimgrp) command to create the IMA group by using the following syntax:

PXM1E_SJ.1.1.AUSMB8.a > addimagrp <group_num> <port_type> <list_of_links> <minNumLink>

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Tip Many of the commands used to manage IMA groups are presented in two forms. For example, the addimagrp command has the same parameters and serves the same function as the addaimgrp command. ATM Inverse Multiplexing (AIM) is an older term that refers to the same features supported by Inverse Multiplexing for ATM (IMA). If this feature is new to you, use the commands with ima in the command name. If you are accustomed to using the commands with aim in the command name, you can continue to use these commands.

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Table 2-7 Parameters for addimagrp Command 

Parameter	Description
group_num	Enter a number for the IMA group. Range: 1-8 Note The AUSM and MPSM cards use the IMA group number to identify the near and far ends of the group connection. Use different IMA group IDs at each end of an IMA connection so that the switch can distinguish between loopbacked lines (near end IMA group ID) and remote switch connections.
port_type	Specifies the port type. Enter a number to indicate the port type, as follows: •1 = UNI •2 = NN1
list_of_links	Lists the links to be included in the group. Enter the dsplns command to see a list of active lines on the current AUSM or MPSM card. Separate each link number by a period. For example, 1.2.3.4 adds links 1 through 4 to the IMA group.
minNumLink	Specifies the minimum number of links required for group operation. For example, if you create an IMA group of 4 lines and specify a minimum number of 3 lines, then three of the four specified lines must be operational before the IMA group can be used. The range for this value is from 1 to n, where n represents the number of lines that are dedicated to the group.

The following example creates the NNI IMA group 1. This IMA group contains lines 1, 2, 3 and 4, and the minimum number of lines required for group operation is 3.

PXM1E_SJ.1.1.AUSMB8.a > addimagrp 1 2 1.2.3.4 3

Step 4 Enter the dspimagrps command to verify that the IMA group has been created, as shown in the following example:

PXM1E_SJ.1.1.AUSMB8.a > dspimagrps

 List of IMA groups:

 ===================

ImaGrp PortType Conf  Avail  Lines configured  Lines present  Tol Diff  Port State

                rate  rate                                    Delay(ms)           

------ -------- ----- -----  ---------------  --------------- --------- ----------

 1.1    NNI     14364 14364  1.2.3.4          1.2.3.4          275      Active

 1.2    NNI     14364     0  5.6.7.8                           275      Sig. Failure

  NextPortNumAvailable:  5

PXM1E_SJ.1.1.AUSMB8.a >

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Note For more information about displaying, configuring, and deleting IMA groups, see the "Managing IMA Groups" section in Chapter 5, "Managing AUSM and MPSM Cards."

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