On Wednesday 29 October 2003 12:05, Jason Tower wrote: > the catch was, > they wanted to have zero downtime when they made the DNS changes so the > web server had to function properly on both T1s simultaneously (the two > T1s were from different ISPs and had totally different subnets). �this > is harder than it seems at first glance; in order for this to function > you have to make sure that traffic "leaves" on the same interface it > arrived on, regardless of which route is preferred.
I stumbled on the zero downtime and iso-interface enter/exit requirements; if one of the T1 interfaces goes down, what happens to responses to queries that entered on the downed interface? are they abandoned or rerouted to the other interface? -- Mike Mueller 324881 (08/20/2003) Make clockwise circles with your right foot. Now use your right hand to draw the number "6" in the air. -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
