[Ask Expert] - 3750 HSRP between 2 room

[SK T1]

Hello,

I've a problem regarding the HSRP setup between 2 room. I'm setup hsrp between two 3750 switches with over interface vlan.

I'm test with shutdown 3750 in server room 1. The 3750 in server room 2 are active. but the 2960s switch from server room 1 is down during test with the  traceback messages about memory.

*Mar 24 18:59:17.117: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x12F04EC, alignment 0
Pool: Processor Free: 549160 Cause: Memory fragmentation
Alternate Pool: None Free: 0 Cause: No Alternate pool
-Process= "SpanTree Flush", ipl= 0, pid= 336
-Traceback= 37EA54z 12D57A8z 12DC3B8z 12F04F0z 12D5004z 12DACD4z 1D45958z 19E581Cz 19E5910z 1B5441Cz 1C33B4Cz 1C2E100z

So, My customer need to use HSRP due to they don't have enough cost to replace the L3 switches with 4500X that will come with VSS.

How should we go with HSRP solution ?

[Leo Laohoo]

*Mar 24 18:59:17.117

Firstly, the time and date of the switch is unreliable.  We don't know if this log entry happened today or two years ago. 

SpanTree Flush

Traceback is caused by STP flushing the table. 

What is the exact IOS version the 2960 is running on?

[SK T1]

Hello Leo,

Thanks for your replied,

The correct date are ;

Jul 20 06:32:51.191: %SYS-2-MALLOCFAIL: Memory allocation of 65536 bytes failed from 0x12F04EC, alignment 0
Pool: Processor Free: 481520 Cause: Memory fragmentation
Alternate Pool: None Free: 0 Cause: No Alternate pool
-Process= "SpanTree Flush", ipl= 0, pid= 189
-Traceback= 37EA54z 12D57A8z 12DC3B8z 12F04F0z 12D5004z 12DACD4z 1D45958z 19E581Cz 19E5910z 1B5441Cz 1C33B4Cz 1C2E100z

The IOS version is 15.0(2)SE8 (c2960s-universalk9-mz.150-2.SE8.bin)

BR,

SK

[Leo Laohoo]

Could be CSCug42691.

[SK T1]

Hello Leo,

Thanks for your answer,

You mean this issue may caused from bug ?

For the configuration & Topology, Is it ok ?

[SK T1]

Hello Cisco Expert,

Is there anyone comment on this?

- Configuration is OK ?

- Firmware is OK ?

- Topology is OK ?

Thanks Leo, interesting on the firmware.

But, I'm thinking about the topology, don't sure the current is good or not ?