[c-nsp] HSRP vs VRRP

[Arnold Nipper]

On 21.10.2005 23:00 Rubens Kuhl Jr. wrote

>> > Switch failure is a different matter. The hosts would need to be
>> > multi-homed to survive that.
>>
>> *And* need to run a dynamic routing protocol to figure out which
>> network is still usable and which default gateway to use (they still
>> might have a local link, depending on the way the switch fails)
> 
> Using failover at the NIC driver level can make this easier(both
> Broadcom and Intel drivers have such features). There is some kind of
> protocol involved (either a connection monitor with active/standby, or
> spanning-tree with active/active), but deployment is somewhat easier
> than extending an IGP to the hosts.
> 
> I say "somewhat easier" because there are still those nasty
> firmware-versions x driver-versions x OS-versions x network-behaviour
> x failure-modes matrix where some of the possibilities won't work, but
> who said IT is easy ?
> 

As already someone mentioned. Use a fault-tolerant transceiver (e.g. 
http://www.milan.com/transceivers/giga_fast_trans.html)



Arnold
-- 
Arnold Nipper, AN45