If I understand what you are trying to do -- it's a little unclear if you are running all the OSPF or someone else is -- inject OSPF defaults with metric type 2, and the metric on Connection A lower than Connection B.
If the management of the OSPF system is under different organizations, I'm afraid. I'm very afraid. >Hello folks, > >I am looking for some ideas on the best way to provide redundant outbound >internet connections. >We currently have 2 separate Internet connections. We run PIX's at both >locations. Inside both PIX's are a set >Of 72xx series routers that run OSPF and BGP process's. > >Do to the nature of our WAN's, the routers are not members of Area 0 for the >OSPF network, and they are running EBGP between them on the BGP WAN network. >One WAN vendor is Area 0, and the other WAN Vendor is our BGP peering >partner. The Internet Vendor for both connections is the same however. > >I would like to implement redundant, dynamic Outbound connectivity that >would use 1 connection as primary, and in case that goes down, failover to >the second. I have come up with some Idea's, but I keep running into a snag >with the PIX's setting between the Internet Router and the Internal router. > > > > EXTRTRA EXTRTRB > | | > PIXA PIXB > | | > INTRTRA INTRTRB > |\ /| > | \ / | > | \ / | > WAN1 WAN2 WAN2 WAN1 > | \ / | > | \- OSPF Network - / | > | | > |--- WAN EBGP PEER --- | > > >( All internal networks use Private name space ) > >WAN 2 is the OSPF WAN vendor and we are not in Area 0, WAN2 routers form >Area 0 on their backside. > >WAN 1 is the EBGP network. IE Each location is a separate AS( private AS ) >and the WAN EBGP peer is 1 AS number. >The EBGP network is used as a failover network between datacenters only ,and >currently no traffic is flowing via BGP. > >All other WAN locations ( 100+) form a fully meshed cloud via OSPF. > >Our current setup is to have INTRTRA with a static route to PIXA that is >redistributed into OSPF. The problem with this is that if EXTRTRA fails, the >only way we know is from the phone ringing. We can swing to the secondary >Internet connection by injecting the default route to PIXB at INTRTRB , but >this is a manual and slow process. > >I am checking with our Internet Vendor to see if they can peer with us and >supply a default route, however, I keep running into a stumbling block on >how >To inject this into the OSPF network. I have thought about setting up a BGP >peer from the inside to the outside, but I think that the route that would >be supplied would point to the external routers interface, not the PIX, >which should be the next hop. > >I want/would like to inject the default routes with different costs such >that connection A is always used unless it is down. > >Anybody else doing this, or have ideas or suggestions on the best practice. >I am sure I am missing something obvious here, I just am going brain dead >and cannot see what it is. > >Let me know if you need more information or if I have managed to totally >confuse you. > >Thanks > >Larry Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37920&t=37908 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
