>I think the best thing you can do is set the TTL of the A record low... like 300 seconds. (You don't have to adjust the SOA) >Cons: >Every nameserver will re-ask for your A record every 5 minutes. >Pros: >Every nameserver will re-ask for your A record every 5 minutes. >Then, at least, you can change the record and it'll take at most 5min to failover. >Or you could get tricky, if your name server lets you do it, and give different responses based on source ips... I used the TTL method above to deal >with our multi-ISP non-portable IPs situation. It was manual failover (I had to change the A) but it was better than nothing.\ >Joe
I was hoping for a "simple" (aka. Like the MX records) trick.. but I suspect that this is just not possible. It appears the only way to implement this is with either an "manual NS change" (ie low TTLs) or by putting in faster backend links... For now, I will head down the manual path - but I can't be alone in this config. Short of outsourcing my DNS to a "failover" company that monitors my links and sets the NS for me (although that means delegating my domain to them - which is a risk (to me) by itself ;)) Alternatively, I suppose I could set a html redirect on the "slow link" pound host (ie. Pound becomes active when the links go down?! As my link speed at the "backup sites" is only slow between pound and iis - not the internet to the pound. Until I put webserver clones at the backup sites (see my vmware note pervious).. I guess I will have to compromise something! I appreciate your comments, and thank you for your ideas. ##################################################################################### This e-mail message has been scanned for Viruses and Content and cleared by NetIQ MailMarshal ##################################################################################### ##################################################################################### The information contained in this email communication may be confidential. You should only read, disclose, re-transmit, copy, distribute, act in reliance on or commercialise the information if you are authorised to do so. If you are not the intended recipient of this email communication, please notify us immediately by email to [email protected] or reply by email direct to the sender and then destroy any electronic or paper copy of this message. Any views expressed in this email communication are those of the individual sender, except where the sender specifically states them to be the views of Wridgways The Removalists. Any personal information in this email must be handled in accordance with the Privacy Act 1988 (Cth). Wridgways The Removalists does not represent, warrant or guarantee that the integrity of this communication has been maintained nor that the communication is free of errors, virus or interference. ##################################################################################### -- To unsubscribe send an email with subject unsubscribe to [email protected]. Please contact [email protected] for questions.
