Tom Eastep wrote:
Kenneth Burgener wrote:We have 3 DSL modems that we load balance using Shorewall providers. Once a route is picked for a particular destination, what is the lifespan of that route? Do these routes "age" and die, or do they clear out when the cache is full, or are they eternal? (if they are eternal, I assume the kernel route cache is cleared when shorewall is restarted?)I believe I can see these routes by viewing the kernel route cache "route -nC", but there doesn't seem to be any indication as to if a route changes.The 'route' command is archaic -- use 'ip route ls cache'.The reason I ask is because one of our sales people uses a site called Sales Genius and his browser session would error with the message saying that his IP address changed. I was able to setup two static routes and the problem went away. I assume the problem actually had to do with their login and application sites having two different IP addresses, but it makes me wonder if other uses could experience a problem with other sites if they browsed a site one day, left their session open, and tried to continue browsing the next day.There are a bewildering number of tunable parameters in /proc/sys/net/ipv4/route/ that control the aging of route cache entries. I don't understand them and I lack the spare time right now to try to research them.Hopefully someone else can help.
Note, however, if you use the 'track' option on your providers, the route that each connections uses should be constant.
-Tom -- Tom Eastep \ Nothing is foolproof to a sufficiently talented fool Shoreline, \ http://shorewall.net Washington USA \ [EMAIL PROTECTED] PGP Public Key \ https://lists.shorewall.net/teastep.pgp.key
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