Redunadant web service? 2

[verland]

This probably isn't the right forum, but I know there's people here that'll understand this....





Say I have two T1's (A and B) at my work, connecting to two different ISP's.


We do our own email, dns, web servers etc and everything is great. Our customers connect to our web page via T1 A.





Now, say T1 A goes down. What's the quickest our web page will be available again on T1 B? All we have to do is make some minor firewall, webserver and DNS changes, but sometimes it takes DNS a day or three to "catch up" worldwide. Is there a faster way?





(Odd question, but someone asked me and I couldn't come up with anything better...)

 

[w1nn3r]

Round robin is your friend

On your DNS servers make duplicate A records:

A www <IP of T1 A>
A www <IP of T1 B>

Not only would that allow fallover so when T1 A goes down all traffic goes automatically to T1 B, but it would allow some load balancing.

 

[fluid11]

The proper way to do it is like this...



www1 IN A 192.168.1.100
www2 IN A 192.168.1.200

www IN CNAME www1
www IN CNAME www2




ChrisP