HSRP flap

[subhojithalder198]

Hi

We are facing HSRP flap in between x-connect of router , Physical Leg is passed via Switch & from switch side STP convergence & CPU utilization is fine in Switch

We are using below OS & ASR version.

System image file is "bootflash:asr1000rp1-adventerprisek9.03.01.03.S.150-1.S3.bin"
cisco ASR1002 (2RU) processor with 1717348K/6147K bytes of memory. 

HSRP config

Router 1

interface GigabitEthernet0/0/3.870

no ip redirects

no ip unreachables

no ip proxy-arp

ip flow ingress

ip flow egress

standby 0 ip ******

standby 0 timers msec 200 msec 750

standby 0 priority 105

standby 0 preempt delay minimum 600 reload 600

end

Router 2

interface GigabitEthernet0/0/3.870

no ip redirects

no ip unreachables

no ip proxy-arp

ip flow ingress

ip flow egress

standby 0 ip IP address

standby 0 timers msec 200 msec 750

standby 0 preempt delay minimum 600 reload 600

Pls confirm whether this HSRP timer / OS version / ASR code is suceptible of any Bug behaviour

Br/

[Florin Barhala]

Don't exactly know what kind of business is this involved but I find the timers defined very aggressive.

I would try 500 msec with 1200 and also check any interface of any kind of error.

[subhojithalder198]

Hi

Agree we are using agressive timer, but same kind of setup is running in all location but in only 1 location we are facing this issue

Switch CPU,memory is fine & STP convergence is also fine for the problematic vlan

[Jose Solano]

Hi,

 I would agreed with the previous comment, the timers are very low and if for some reason the hello is missed you may see the flap. I will also check the CPU utilization and the physical interface for any drops or input/CRC errors.