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

[Chris Gauthier]

Personally, 

I think you will be better off re-pointing your DNS. Here's my logic: 

1) By re-pointing DNS, it won't matter where your server is. DNS will point to it. 
2) Spanning vlans across a WAN link, especially a slower link, is not a good idea, especially if it is a high-traffic vlan. 
3) DNS changes are much simpler to implement. 

Chris 

----- Original Message ----- 
From: tkacprzynski at spencerstuart.com 
To: cisco-nsp at puck.nether.net 
Sent: Tuesday, October 28, 2008 9:21:42 AM GMT -08:00 US/Canada Pacific 
Subject: [c-nsp] DR Scenario (IP or DNS Changes) 


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. 

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