Hi, I have a linux box loaded with RH7.1, 3 ethernet with load balance on 2 ISP. In theory, if one router stop to work (I have turn off for this try), the Dead Gateway Detection, would re-instradate alla traffic on other link. This not work...someone have more experience on this? Giorgio Biondi
On Friday 09 August 2002 07:48, Giorgio Biondi wrote:> Hi, > > I have a linux box loaded with RH7.1, 3 ethernet with load balance on 2 > ISP. In theory, if one router stop to work (I have turn off for this try), > the Dead Gateway Detection, would re-instradate alla traffic on other link. > This not work...someone have more experience on this?Have you followed the lartc howto chapter 10? Stef -- stef.coene@docum.org "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.oftc.net _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
Hi,
I installed the routing patches at
http://www.linuxvirtualserver.org/~julian/#routes for Linux 2.4.19 and
have a few questions:
Q1: In the Nano-HOWTO on your site, it says to include these statements:
"ip route append prohibit default table <tablename> metric 1 proto
static"
Why? What does it do? If I use these I can''t connect to the Internet,
without them I can.
Q2: I have the following multipath route to the Internet:
"default proto static
nexthop via GW1 dev eth1 weight 1
nexthop via GW2 dev eth2 weight 1"
If I unplug eth2 the second route is never marked as ''dead'',
why?
Only if I ''ifconfig eth2 down'' the second route is marked
dead. I
thought the patches would detect this?
Thanks,
--
Laurens van Alphen
Keen on dots
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Hello, On Fri, 9 Aug 2002, Laurens van Alphen wrote:> Q1: In the Nano-HOWTO on your site, it says to include these statements: > "ip route append prohibit default table <tablename> metric 1 proto > static" > Why? What does it do? If I use these I can''t connect to the Internet, > without them I can.The reason can be that you have other rule/route settings. The purpose is: traffic using source addresses from failed links should not try to use another alive link (some ISPs do not allow spoofing from our side). Such prohibit rules avoid using less-specific routes from other tables if the previous route is deleted (metric 0).> Q2: I have the following multipath route to the Internet: > "default proto static > nexthop via GW1 dev eth1 weight 1 > nexthop via GW2 dev eth2 weight 1" > If I unplug eth2 the second route is never marked as ''dead'', why? > Only if I ''ifconfig eth2 down'' the second route is marked dead. I > thought the patches would detect this?Linux detects failed gateways and does not use them but the nexthops remain alive. Dead are only the routes administratively marked as such. This is the current way.> Thanks, > > -- > Laurens van Alphen > Keen on dotsRegards -- Julian Anastasov <ja@ssi.bg> _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/