4506E 100% CPU - HSRP standy/active, EIGRP down

[yann guillemot]

Hi,

We have two 4506E interconnected with tengigabitethernet card on WS-X45-SUP6-E.

Since 2 months, we have performance problem on network.

On 4506E the CPU are in 100%, the HSRP flapping and EIGRPdown.

The 4506E version is Version 12.2(53)SG.

I don't find any issue. Have you an idea ?

Thank for your help.

[Ganesh Hariharan]

yann guillemot wrote:
Hi,
We have two 4506E interconnected with tengigabitethernet card on WS-X45-SUP6-E. 
Since 2 months, we have performance problem on network. 
On 4506E the CPU are in 100%, the HSRP flapping and EIGRPdown.
The 4506E version is Version 12.2(53)SG.
I don't find any issue. Have you an idea ?
Thank for your help.

Hello ,

What is the show log says in switch , is ports are getting flapped between the switches which is creating problem for hsrp ...

Regards

Ganeshh Iyer

[yann guillemot]

Hi,

The only log on switch :

4 12:26:02.605: %HSRP-5-STATECHANGE: Vlan206 Grp 0 state Speak -> Standby

4 12:26:02.621: %HSRP-5-STATECHANGE: Vlan55 Grp 0 state Speak -> Standby

4 12:26:02.789: %HSRP-5-STATECHANGE: Vlan4 Grp 4 state Speak -> Standby

4 12:26:02.869: %HSRP-5-STATECHANGE: Vlan6 Grp 6 state Speak -> Standby

4 12:26:02.917: %HSRP-5-STATECHANGE: Vlan14 Grp 14 state Speak -> Standby

4 12:26:03.397: %HSRP-5-STATECHANGE: Vlan100 Grp 0 state Speak -> Standby

4 12:26:03.833: %HSRP-5-STATECHANGE: Vlan172 Grp 172 state Speak -> Standby

4 12:26:04.169: %HSRP-5-STATECHANGE: Vlan202 Grp 0 state Speak -> Standby

4 14:27:26.803: %HSRP-5-STATECHANGE: Vlan14 Grp 14 state Standby -> Active

4 14:27:26.815: %HSRP-5-STATECHANGE: Vlan14 Grp 14 state Active -> Speak

4 14:27:37.956: %HSRP-5-STATECHANGE: Vlan14 Grp 14 state Speak -> Standby

[Giuseppe Larosa]

Hello Yann,

this is only the symptom that HSRP is not working correctly

Use the following link to troubleshoot high cpu on C4500 switches

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00804cef15.shtml

If nothing else works you have to consider the option to isolate ( disable all links to  one of the switches)  or  to power off one of the two switches to see if the network can be restored.

if HSRP is flapping and EIGRP is down your network is not working correctly,  restoring network connectivity should be your first target.

>> Since 2 months, we have performance problem on network.

it is high time to solve this issue. The network has not been in use up to now

Hope to help

Giuseppe

[Limitless1801]

Make sure you don't have any debug standby command enable because it could cause high CPU utilization

Thanks, RG

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