Specifications

10-20
Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 10 Switch Maintenance Procedures
Replacing Cards
• Replacing Eight-Port T1 and E1 Service Modules with MPSM-8-T1E1
• Replacing Service Modules with a Different Type of Service Module
Replacing Service Modules with the Same Type of Service Module
If a service module front or back card fails, remove the old card and insert a new card of the same type
in the same slot. If the card is a standalone card, all communications are interrupted. If the card is part
of a redundant card set, you can replace the standby card without disrupting traffic through the active
card.
The configuration for each service module is stored on the PXM. The switch automatically configures
the replacement service module and starts it up. If the card is a standalone card, the card will start up as
an active card. If the card is part of a redundant pair, the card will start up in standby mode.
Note The switch automatically selects and loads the correct runtime software for a service module based on
the configuration for that slot. The switch does not automatically burn the boot code for a service
module.
Replacing Eight-Port T1 and E1 Service Modules with MPSM-8-T1E1
The MPSM-8-T1E1 card is designed to replace older eight-port T1 and E1 service modules designed to
provide ATM, circuit emulation, and Frame Relay services. The following sections list the cards that can
be upgraded to MPSM-8-T1E1 and the procedures for upgrading cards that are operating in standalone
and redundant configurations.
Service Modules that Can Be Upgraded to MPSM-8-T1E1
The following service modules can be upgraded to or replaced with MPSM-8-T1E1:
• AUSM8E1/B
• AUSM8T1/B
• CESM-8E1
• CESM-8T1
• CESM-8T1/B (provided that the single timeslot multiframe capabilities are not being used)
• FRSM-8E1
• FRSM-8E1-C
• FRSM-8T1
• FRSM-8T1-C
Note There are feature differences between the service modules listed above and the MPSM-8-T1E1. For
more information, refer to the appropriate service module configuration guide, all of which are listed in
Table 1-1.