[c-nsp] top of rack switch recommendations

Phil Mayers p.mayers at imperial.ac.uk
Wed Mar 17 17:14:32 EDT 2010


On Wed, Mar 17, 2010 at 08:15:36PM +0000, Alex Krohn wrote:
>Hi,
>
>On On Wed, 17 Mar 2010 12:38:58, Cyrill Malevanov wrote:
>
>>> IPv6 features have been moved as part of the 'IPv6 reformation', where
>>> an IPv6 feature exists where the same feature exists for IPv4 (e.g.
>>> IPv6 static routes are in IP Base, just like IPv4 and OSPFv3 is in IP
>>> Services, just like OSPF for IPv4).
>
>Do you have any experience running dual stacked? We have a pair of 3750's with enhanced image that I unfortunately can't touch at the moment, but we did run into problems as we could not dual stack HSRP. i.e. you can run HSRP with v4 or v6, but not both at the same time. 
>
>Any other gotcha's that anyone has run into? i.e. source guard works on v4 or v6, but not dual stacked? Is anyone using these in a dual stack environment?
>

We run a pair of these dual-stacked as our NOC routers.

They generally work fine. The lack of HSRPv6 is irritating but tolerable 
in that application for us; appropriate RA timers get ~60 second 
failover.

We don't run source guard, so I don't know, but is there even such a 
thing for ipv6?


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