what will be the impact if same HSRP goups are assigned to different VLANs.

Posted on 2011-02-15
Last Modified: 2012-08-14
Say we have VLAN 11 assigned group 11 and VLAN111 also assigned the same group. Also VLAN 211 have the same HSRP group.

Question by:Manishkumarnavar
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Accepted Solution

nimda7 earned 334 total points
ID: 34896491
It depends. Probably, You've got the one common router (route path) for all of them, because with links with the same group ID selected 1 router, another devices go standby.

Author Comment

ID: 34897000
may it causes the DUPADDRESS (Duplicat MAC Address) error ?

Assisted Solution

nimda7 earned 334 total points
ID: 34897380
in same HSRP group many devices (routers & etc)  share one same MAC and IP - it's feature. BUT! As You have several VLAN's - your devices may receive 1 MAC on the different separate ways. And yes - It's looks like a duplicate address; in the different networks - present the one same address.
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Assisted Solution

rfc1180 earned 166 total points
ID: 34898547
Nothing happens when you use the same group for hsrp. You have more vlans than you do harp groups, you will eventually have to use the same group.


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