[c-nsp] Spanning-Tree Loop (12.2.18SXF7)

[Antonio Soares]

Hello group,

I'm troubleshooting a STP loop that seemed to be triggered by these errors:

++++++++++++++++++++++++++++++++
%PM_SCP-SP-3-LCP_FW_ABLC: Late collision message from module 1, port:029
%IPC-SP-5-WATERMARK: 15612 messages pending in xmt for the port
CHKPT:STANDBY SP(2080000.B) seat 2080000
%IPC-SP-5-WATERMARK: 20068 messages pending in xmt for the port
CHKPT:STANDBY SP(2080000.B) seat 2080000
%IPC-SP-5-WATERMARK: 22904 messages pending in xmt for the port
CHKPT:STANDBY SP(2080000.B) seat 2080000
%PM_SCP-SP-3-LCP_FW_ABLC: Late collision message from module 2, port:039
%IPC-SP-5-WATERMARK: 25710 messages pending in xmt for the port
CHKPT:STANDBY SP(2080000.B) seat 2080000
%IPC-SP-5-WATERMARK: 28510 messages pending in xmt for the port
CHKPT:STANDBY SP(2080000.B) seat 2080000
%PM_SCP-SP-3-LCP_FW_ABLC: Late collision message from module 2, port:039
%IPC-SP-5-WATERMARK: 30344 messages pending in xmt for the port
CHKPT:STANDBY SP(2080000.B) seat 2080000

%SYS-SP-2-MALLOCFAIL: Memory allocation of 1768 bytes failed from
0x4020DCC8, alignment 32 
Pool: I/O  Free: 148112  Cause: Memory fragmentation 
Alternate Pool: None  Free: 0  Cause: No Alternate pool 

-Process= "Spanning Tree", ipl= 2, pid= 126
-Traceback= 40280990 402826F8 4020DCD0 4020E064 402108DC 4020D0B8 40AAB1BC
40AAB64C 404A3970 404C4F64 404C51A8 404C5460 404AAA58 404AAE40 40A9EE00
40A9D71C
++++++++++++++++++++++++++++++++

These were seen on one of core's 6500. The 6500s are running 12.2.18SXF7.

Fortunately the problem went away by itself. The last thing we want is a STP
loop in a network with several 6500s and 4500s, right ? :)

Anyone has seen something like this ? I'm now hitting Bug Toolkit to see if
this was reported before.


Thanks.

Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
amsoares at netcabo.pt