02-09-2015 06:57 AM - edited 03-05-2019 12:45 AM
Hello,
I have 5 vlans configured in a router-on-a-stick deployment
We use hsrp for failover
Question is, all 5 subinterfaces are in the same standby group, can I expect this to work correctly when I deploy or should I just create 5 standby groups?
Thanks!
Solved! Go to Solution.
02-09-2015 10:02 AM
Hi,
HSRP protocol traffic is always link-local so from a functionality perspective you don't need to use different standby groups.
However, many administrators like to use different groups for reasons of clarity in their configurations and also in troubleshooting because different standby groups create different virtual MAC-addresses for the active routers as well.
HTH
Rolf
[EDIT]:
Link: HSRP FAQ: Can I configure more than one standby group with the same group number?
02-09-2015 10:02 AM
Hi,
HSRP protocol traffic is always link-local so from a functionality perspective you don't need to use different standby groups.
However, many administrators like to use different groups for reasons of clarity in their configurations and also in troubleshooting because different standby groups create different virtual MAC-addresses for the active routers as well.
HTH
Rolf
[EDIT]:
Link: HSRP FAQ: Can I configure more than one standby group with the same group number?
07-20-2016 09:10 AM
Hello Fischer,
Could you please let me know, will it work for all the L3 Router & Switch models?
07-20-2016 10:23 AM
Hello,
Could you please let me know, will it work for all the L3 Router & Switch models?
As far as I know, yes.
Some older platforms/IOS may support only 16 different groups, but most should allow full ranges from 0 to 255 for HSRPv1 and, if applicable, from 0 to 4095 for HSRPv2.
Examples:
HSRP Group Limitation on Catalyst 6500/6000 Series Switches FAQ
HSRP Group Limitation on Catalyst 3550 FAQ
HTH
Rolf
07-20-2016 11:42 AM
In my current setup Cisco 3925 Router with IOS c3900-universalk9-mz.SPA.154-3.M3.bin
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