Search Again: Re: Multiple IPs for one address ? From: Richard Davis Date: Wednesday, March 5, 2003 Time: 9:28:36 pm >Folks, > >I guess this is essentially a "pure" DNS question but... Is it possible, >using QDNS with OS X BIND, to attribute more than one IP for a given >name ? > >Say I have www.myorg.com and two different inbound routers to my web >server (for redundancy purposes). How do I manage that ? I know this is not being a very good net citizen but... I have a DNS server on each inbound set of IPs. One registered as primary, the other as secondary. Both are set as master DNS servers so they do not sync. I set the TTLs on both to 600 so... If the primary connection fails, after 10 minutes the secondary DNS provides it's IP and route to the server. My servers do not see too much traffic so the extra incoming DNS traffic to refresh other DNS caches after only 10 minutes is not too bad. I also realize that sometimes the dns will resolve from the secondary DNS server instead of the primary. But since both connections are full time and point to basically the same server it is not an issue. I set the exact same multiple MX records for both master servers as MX records already provide a redundancy record.

Messages In This Thread: Multiple IPs for one address ? by Alexandre Takacs on Mar 5, 2003 at 2:18:31 pm Re: Multiple IPs for one address ? by Richard Davis on Mar 5, 2003 at 9:28:36 pm Re: Multiple IPs for one address ? by Alexandre Takacs on Mar 6, 2003 at 8:36:22 am Re: Multiple IPs for one address ? by Richard Davis on Mar 6, 2003 at 10:47:16 am Re: Multiple IPs for one address ? by Men & Mice Support on Mar 7, 2003 at 2:06:31 pm