Re: carp, 2 router
FranC'ois Rousseau wrote: Hi, I have a problem to understand how to dynamically change the route destinate to a carp interface. I have 2 routers, both have 3 NIC. On each router I have: 1 Nic for the upstream 1 Nic for the LAN ( 5 carp, no nat) 1 Nic for inter-router traffic. What I want: If one of my CARP goes in Backup state or if the cable is unplug, every route to those network are automatically redirected to the other router. Ex: Carp on router 1 goes backup so every traffic destinate to those network are automatically redirected to the router2 who have the CARP Master. So my router1 can continue to communicate with host on the LAN. (use full to route traffic from my upstream provider) Right now, I think is impossible because the route always stay in route show regardless of the interface state. Any idea how to do this? Not sure I /totally/ understand your architecture, but I think what you need is a carp on the upstream. Chris
Re: carp, 2 router
Well at the end I will have BGP for the upstream provider but this part work fine so I have not talk about it in my last email. I have done a fast schema of my setup: http://step.polymtl.ca/~spock/draft.jpg. The reason I want to use CARP inside is because I want to have a single gateway on my servers. The BGP part will take care of annoncing the routes and taking the good exit point. The CARP part will take care of the gateway for my servers. But OSPF is not able to enter the carp route in the routing table... probably because a route is already there. thanks, Francois Rousseau 2007/4/12, Chris Black [EMAIL PROTECTED]: FranC'ois Rousseau wrote: Hi, I have a problem to understand how to dynamically change the route destinate to a carp interface. I have 2 routers, both have 3 NIC. On each router I have: 1 Nic for the upstream 1 Nic for the LAN ( 5 carp, no nat) 1 Nic for inter-router traffic. What I want: If one of my CARP goes in Backup state or if the cable is unplug, every route to those network are automatically redirected to the other router. Ex: Carp on router 1 goes backup so every traffic destinate to those network are automatically redirected to the router2 who have the CARP Master. So my router1 can continue to communicate with host on the LAN. (use full to route traffic from my upstream provider) Right now, I think is impossible because the route always stay in route show regardless of the interface state. Any idea how to do this? Not sure I /totally/ understand your architecture, but I think what you need is a carp on the upstream. Chris
Re: carp, 2 router
Caveat -- bge? ospf? eh I only know them at the executive brief level. carp, stp, static routing I know well enough. So call router one primary traffic is coming routes are all up everything is good. Switch 1 dies, carp switches master over to router 2 bge2. If you had carp inside and out, you would be done, router2 bge1 would take over your outside ip and traffic would go there. If I understand your issue: In the case of the failure upstream 1 is going to continue to send traffic to router 1, you want rtr 1 to then forward traffic to router 2. Router 2 then hands traffic to the internal systems. OSPF is refusing to add a route showing something like 10.50.4/241xx.1xx.35.1 UGS 00 - bge0 because you already have 10.50.4.22 00:00:0c:9f:f0:4e UHLc 0 11351930 - carp1 or some such What if you use were to use ifstat to remove the ips from router1 be2 on failure? If you do this manually will ospf add the routes you desire? FranC'ois Rousseau wrote: Well at the end I will have BGP for the upstream provider but this part work fine so I have not talk about it in my last email. I have done a fast schema of my setup: http://step.polymtl.ca/~spock/draft.jpg. The reason I want to use CARP inside is because I want to have a single gateway on my servers. The BGP part will take care of annoncing the routes and taking the good exit point. The CARP part will take care of the gateway for my servers. But OSPF is not able to enter the carp route in the routing table... probably because a route is already there. thanks, Francois Rousseau 2007/4/12, Chris Black [EMAIL PROTECTED]: FranC'ois Rousseau wrote: Hi, I have a problem to understand how to dynamically change the route destinate to a carp interface. I have 2 routers, both have 3 NIC. On each router I have: 1 Nic for the upstream 1 Nic for the LAN ( 5 carp, no nat) 1 Nic for inter-router traffic. What I want: If one of my CARP goes in Backup state or if the cable is unplug, every route to those network are automatically redirected to the other router. Ex: Carp on router 1 goes backup so every traffic destinate to those network are automatically redirected to the router2 who have the CARP Master. So my router1 can continue to communicate with host on the LAN. (use full to route traffic from my upstream provider) Right now, I think is impossible because the route always stay in route show regardless of the interface state. Any idea how to do this? Not sure I /totally/ understand your architecture, but I think what you need is a carp on the upstream. Chris
