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jcremin

join:2009-12-22
Siren, WI
kudos:3
reply to raytaylor

Re: Microtik and IPv6

I use OSPF for failover for my two links to my upstream provider. One is a direct PTP shot which plugs into my core router, and the other is a shot to one of their other towers which runs over a VPN back to the same core router to make it look like both links are simple PTP shots.

I have the hello interval set to 1 second, and the router dead interval set to 5 seconds. That basically means that it will check the link every second to make sure it is still online, and if it doesn't respond for 5 seconds, it will failover to my other link.

I tested it down to 2 or 3 seconds, which worked, but caused some excessive flopping if I had any packet loss. 5 seconds has worked will for the last 2 years. You'll drop a few pings, but other than a little delay waiting for a page to load, the failover typically happens before most streaming video sites even run out of their buffer.