From: David Schwartz on 25 Mar 2010 17:45 On Mar 25, 3:57 am, vfclists <vfcli...(a)googlemail.com> wrote: > I thought the process was automatic, something built into the > networking system. What process? What are you expecting to happen exactly? > I guess I have to consider again. > Are there some systems or scripts that will do this automatically? Do what? Switch gateways if something happens? If so, what? It's not clear what it is you're expecting to happen and under what conditions you are expecting it to happen. I would strongly urge you to choose a failover scheme that meets your requirements and implement it. It might be OSPF. It might be VRRP. It might be a script that checks for incomplete ARP entries and deletes routes. But what you should do depends very much on what you want. DS
From: Chris Cox on 25 Mar 2010 18:03 On Wed, 2010-03-24 at 09:28 -0700, vfclists wrote: > When linux as multiple gateways and multiple DNS servers, how long > does it take to switch to the other connections when the leading ones > fail? It's not a failover mechanism. It will try the first DNS, timeout, then try the next. So it could take a long time to resolve names. As far as network paths go, usually need some kind of virtual pathway to have some sort of failover. > > I have had a connection which appeared not to work because one of the > gateways was unavailable. True. > > Is there a way of configuring a time out for them to switch over? You could attempt the failover with some kind of program... your program would query or receive somehow the gateway was down and manually change the gateway.
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