VRRP Groups

[taylor.gravis]

Is it possible to configure the same VRRP group number on a different physical interface or VLAN interface on the same L3 switch?  I am looking at configuring more than 255 VRRP groups per L3 switch pair (i.e. two 6500's).

[Latchum Naidu]

Hi

That's no problem as long as your L2 cloud properly learns MACs per VLAN
so VRRP group 1 MAC in VLAN XX is something different than the same VRRP
group 1 MAC in VLAN YY.

As said above, vrrp-group has to be unique per broadcast-domain which is per
vlan. You may use "vrrp-group 1" as often as you like, as long as they talk on
different vlans (which is a very comfortable way, since you can easily use
apply-groups for the common config values).

Please rate the helpfull posts.
Regards,
Naidu.

[taylor.gravis]

Naidu,

Based on your response, I assume that ultimatley VRRP will use the physical "master" MAC address (i.e. the physical or SVI interface MAC address) to forward the traffic for each of the broadcast domains, since when I configure two VRRP groups (both using group ID 1) on two physicaly seperate interfaces or VLAN interfaces, the VRRP virtual MAC address is the same across both groups.

[Latchum Naidu]

Hi

VRRP group 1 vMAC in VLAN X is something different than the same VRRP
group 1 vMAC in VLAN Y.

To use the same group several times or use the same VRRP-group (i.e.1) on every VLAN subunet.

Please rate the helpfull posts.
Regards,
Naidu.