Cisco Cisco MGX 8880 Media Gateway Release Notes

For the clear service module configuration feature, using the clrsmcnf command might result in 
discrepancy in the PNNI configuration. For example, some connections might be in the mismatch 
state.

If the clrsmcnf command is given with the <all> option to clear the software version for the slot as 
well, then the card enters the boot/empty state after the operation is complete.

If the clrsmcnf command is given with the <all> option, for cell bus service module, the card enters 
boot/empty state. For a broadband service module (for example, AXSM or MPSM-155-T3E3), the 
card enters fail/active state.

While using the clrsmcnf command, the card in the specified slot is not usable until the operation 
is successfully completed.

These notes pertain to the Automatic Protection Switching (APS) feature:

For AXSM APS, the back card of the active card must be present for APS to function. 

AXSM cards need the back card of the active front card for the APS to work. This implies that 
AXSM cards do not support the cross backcard removal—the upper backcard of one AXSM and 
lower backcard of another AXSM.

If you remove the upper back card of the active front AXSM, it triggers switching active card. The 
APS is OK. However, if the lower back card of the current active AXSM is removed at this time, it 
does not trigger switching the active card because the standby card is missing one of the back cards. 
The lower backcard APS does not work because the back card of the active front card is missing.

Port LED lights on AXSM-E front cards indicate the receive status of the physical line connected to 
it only when the card is in active state. For standby AXSM-E cards, the LEDs always remain green 
when the lines are in loss of signal (LOS) irrespective of which lines are active (refer to anomaly 
CSCdv68576).

These notes pertain to the path and connection trace features:

Path trace is not supported on the control port.

Path trace does not have the accurate information when there is a crankback on the connect path.

Path and connection trace support point to point connections.

Path and connection trace support MPG (multiple peer group) and SPG (single-peer group).

These notes pertain to the priority routing feature:

Prioritized reroute of soft permanent virtual connection (SPVCs) is not guaranteed if the SPVCs 
originate on a signaling port. SPVCs might get routed out of order. In-order routing of SPVCs is 
guaranteed on non-signaling ports.

RPM does not support configuration of routing priority. All RPM mastered SPVCs are assigned a 
routing priority of 8 by the PXM.