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Re: Disaster recovery using as-prepend?
On 16 Feb 2006, at 14:56, Christopher J. Pilkington wrote:
We have a PI /24 we'd like to advertise out of our primary data center for production use. (Well, actually, we'll be advertising a more specific from our /21 assignment, so already not too friendly... but I digress.)
How about advertising all of your PI from all of your perimeter routers, and configuring internal routing to ensure packets get to the rightful live/preferred data centre. Then, in the event of a failover situation, you can change the routing behaviour so that packets for the production /24 end up in the alternative dc.I'm thinking advertising the same prefix and just doing several as-prepends. However, now I'm not sure if this is a polite thing to do or not.
To work, this does imply you have good connectivity between your live and failover environments (but i guess you have this so that you can copy over state/live data between your two environments anyway..), so that you can carry customer/live data over the link too.
Double plus good for you if you can get cheap transit delivered to your failover dc - you could use this for your preferred environment too !