On 15/12/10 13:13, Ian Henderson wrote:
On 15/12/2010, at 1:54 AM, Garry wrote:
I'm really starting to wonder whether we're the only ones on this
earth still using a dual switch config for our routers for
redundancy purposes ...
So you're using backup interface for two Ethernet interfaces, both
facing the same switched network? Cool - haven't seen backup
interfaces since they were used to dial ISDN terminal adaptors. Is
anyone else out there doing this? Out of curiosity, what kind of
failover time do you get for IPv4?
We use this to build "out of band" management facility on 6500s with
dual-sup, so that the SUP is always reachable whichever is active.
interface GigabitEthernet5/2
description oob
vrf forwarding OOB
backup interface GigabitEthernet6/2
ip address 10.x.x.x
media-type rj45
interface GigabitEthernet6/2
description oob
vrf forwarding OOB
ip address 10.x.x.x
media-type rj45
The MAC is the same on both interfaces according so "sh int". As far as
I can tell, the failover time is "instant" i.e. sub-second.
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