[c-nsp] DR Scenario (IP or DNS Changes)

[tkacprzynski at SpencerStuart.com]

I was wondering if I could get some opinions about a DR scenario, where
you have a DR site on a different subnet and need to failover a one
server in case is crashes OR failover a whole site. Would you say that
changing IP addresses of server and using bridging (to spread the subnet
between the two sides) is a good idea OR modifying the DNS record and
setting short timeout on these records is better? (Bridging would have
to be based on L3, either GRE tunnel or something else).

Thank you for your options.