On 12/30/06, Indunil Jayasooriya <indunil75@xxxxxxxxx> wrote:
HI Peter, Interesting in deed. You say that You can add a second route and weight it as follows: ip route add equalize 192.168.2.0/24 scope global nexthop via 192.168.0.254 dev eth0 weight 1 nexthop via 192.168.0.250 dev eth0 weight 1 I want to know whether I can use the above command , when the below command exists . ip route add 192.168.2.0/24 via 192.168.0.254 Then I want to know about your second answer which is "To achieve the goal of primary path only, you can heavily weight one path over the other, some traffic will still spill into the other, you can remove the equalize parameter to disable this behaviour " herein, what is this "you can heavily weight one path over the other" When weight 1 and weight 1 , Both paths are equal. If I use weight 1 and weight 100 , what would be the primary path ? Is it weight 1 ? Is it the lower number which becomes primary ? Then , in my case, is the following coomad is right? ip route add 192.168.2.0/24 scope global nexthop via 192.168.0.254 dev eth0 weight 1 nexthop via 192.168.0.250 dev eth0 weight 100 I guess with the above command that traffc will flow via primary, when it fails , traffic will flow via secondary. That is what I need. Am I right ? Then can I acheive this goal ?
Hi, Maybe you can use this script http://www.go2linux.org/index.php?option=com_content&task=view&id=16&Itemid=28 best regards, Guillermo.
Thanks Indunil ---------- Forwarded message ---------- From: Aleksandar Milivojevic <alex@xxxxxxxxxxxxxxx > Date: Dec 30, 2006 3:37 AM Subject: Re: Fwd: How to add a route to a network via 2 gateways. To: centos@xxxxxxxxxx Quoting Indunil Jayasooriya < indunil75@xxxxxxxxx>: > Hi , > > I have a network to reach which is 192.168.2.0/24. It is a branch of the > company. I have currently added a route to that network via one gateway ( > 192.168.0.254) in following way. > > ip route add 192.168.2.0/24 via 192.168.0.254 > > Now, We got another gateway which is 192.168.0.250. Now I want to add a > route to the same network which is 192.168.2.0/24 via this gateway > (192.168.0.250) > as well. > > Then I will have 2 paths to the same network. One path should be primary and > the other path should be backup. everything should go via primary path. > > if the primary path goes down, the backup path should be active. > > That is the purpose of doing this. > > Pls let me know whether it is possible or not? > > if possible, How can I achieve this goal. One possible solution is to enable one of the routing protocols on your routers, instead of using static routing. For example BGP or OSPF. The routers will than discover which paths to every of the networks you have exist and will dynamically change routing rules (instead of using static set of rules) as the network connections go up and down. In the way you requested in your question. It might be an overkill for simple network. But if your network becomes more complex in the future, you'll have infrastructure to handle it. Another advantage of using standard routing protocol is that they tend to be platform independent. You want to replace that Cisco router with Linux router or Linux router with Cisco router. Guess what, you can use BGP or OSPF on both Linux and Cisco based router and your configuration is not specific to single type of router anymore. _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos -- Thank you Indunil Jayasooriya _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
-- Guillermo Garron "Linux IS user friendly... It's just selective about who its friends are." (Using FC6, CentOS4.4 and Ubuntu 6.06) _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
