Cisco MGX MGX 8800 Hardware Installation Manual page 203

Chapter 2 Illustrated Card List for MGX Switches and the MGX 8880 Media Gateway
Table 2-31
LED
FAIL
PORT 1
1:N RED
BERT
SRME/B
Supported models: MGX 8850 (PXM1E/PXM45), MGX 8850/B (PXM1E/PXM45), MGX 8830, MGX 8830/B, MGX 8880
SRME/B stands for Service Resource Module, Enhanced, Revision B. The SRME/B combines the
characteristics of the SRME and SRM-3T3/C—it supports 1 OC-3/STM-1 port channelized to T1/E1
like SRME, and 3 DS3 ports channelized to T1, like SRM-3T3/C. The SRME/B can coexist with earlier
version SRM cards, yet with the SRME/B, you no longer have two carry two separate SRM types.
See the
The MGX 8880 Media Gateway uses only the SRME/B card.
Note
Module Configurations
SRM redundancy is preconfigured on the Cisco MGX switches. On an MGX 8850 (PXM1E/PXM45) or
MGX 8850/B (PXM1E/PXM45), if SRM cards are inserted in slots 15 and 31 and 16 and 32, they
automatically operate as redundant cards. If you install only one SRM in the switch, it operates as a
standalone card.
It is recommended that you install two to provide fault tolerance. If one card or line goes down, a
redundant card or line takes over. The following module configurations are supported for the SRM:
•
SRM cards can operate in a standalone configuration. However, it is not recommended that you use this
Caution
configuration if SRM cards are operating as back cards for service modules (1:N card set redundancy
configuration).
If you have two PXMs installed in your switch (one active and one standby), you must have redundant
SRM cards (one active and one standby) installed in each bay.
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
SRME LEDs (continued)
Color
Red
Green
Red
Yellow
Off
Green
Off
Green
Off
"SRM" section on page 2-68
Standalone.
Function
When this LED is solid red and the ACT and STBY
LEDs are off, one of the following conditions exists:
The module has failed.
•
The card set is not complete (no back card).
•
The port is active with no alarms detected.
The port is active and a local alarm has been detected.
The port is active and a remote alarm has been
detected.
The port is not configured, or the card set is configured
as a redundant card set and is in Standby mode.
1:N card set redundancy has been invoked.
1:N card set redundancy is not active.
The BERT function is active.
The BERT function is not active.
for general details on SRM cards.
Cisco MGX 8800/8900 Series Hardware Installation Guide
Front Cards
2-73