[c-nsp] HSRP/VRRP scalabilty

[Grzegorz Janoszka]

On 02-03-11 10:08, jack daniels wrote:
> Dear Experts,
> 
> If we want to configure gateway for 1000 Vlans on Cisco 7600 (HSRP
> will be a issue as it supports only 256 HSRP groups) . Any soltion for
> the same -
> 
> I have though of two solutions but don't know whether they will scale
> or workout , please help me in suggesting -
> 
> Solution 1 -  ( I heard there is something called " Follow up") can
> you guide me any solution document for this.
> 
> 
> Solution 2    Another solution for the same I think is if - There are
> incoming 4 vlans (Vlan1 , Vlan 2 , Vlan 3, Vlan 4 -IP address subnet
> same on all four vlans ) and if I Translate on Layer 2 medium these
> four  vlans to Vlan 5 and configure IP address ( Gateway IP address on
> which HSRP will run ) on this VLAN 5 .Is this thing possible on Layer
> 2 medium - if I use VLAN translation or use fundamentals of imposing S
> tag. Please suggest how this will work.

Solution 3 - HSRP version 2, up to 4096 groups:
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gthsrpv2.html
We use it with SXI, works well.


-- 
Grzegorz Janoszka