[c-nsp] Backup Interface & IPv6 - why is Cisco sleeping?

[Garry]

On 15.12.2010 14:13, 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? Does it swap the MAC address too? 

No, different MAC addresses ... switchover time is something like 2-3
seconds with appropriate settings on the switch port (portfast,
otherwise STP would require a longer wait time until the port is enabled)

-garry