I have a pair of 2621's and 2 reduandant ethernet handoffs to my ISP. 1 is a primary and the other is a backup which should only be used if the primary fails. On my side i am running HSRP for fault tolerance RA is configured asprimary in my HSRP group. I will be doing BGP peering with my provider. I only want to receive default routes. I almost have the full config but am confused on 1point. If ISPA goes loses connectivity a couple hops upstream HSRP will not fail over becasue my link is physically up so all my internal hosts will still go through RA eth0. How do I get them to go through RA eth0 then to RB eth0 and then eventually through the backup ISP link, ISP B. Keep in mind its the same ISP, AS#, just a different connection. Its a huge ISP. Is there some kind of peering needed between RA and RB, maybe some special commands? Am I at least on the right track? My configs are posted below.
If the ascii art gets confusing I have posted good a diagram as a gif at : http://sbnet.freeservers.com/bgp.gif virtual router All routers use AS100 ____________________ __________________ 172.16.20.0 ---> | 172.16.10.2--->RA | 192.168.133.1------->|ISPA 192.168.133.2 | ----->internet 172.16.30.0 --> | ------------------------| (RA eth1) |__________________| 172..16.10.0 ---> | 172.16.10.1-->HSRP | | ----------------------- | | 172.16.10.3---->RB | _________________ |___________________| 192.168.100.1--------->|ISPB 192.168.100.2|------>internet (RB eth1) |________________| Router A ----------------------------------- ------------------------------------ interface FastEthernet0/0 ip address 172.16.10.2 255.255.255.0 standby priority 105 standby 244 ip 172.16.10.1 standby 244 preempt standby 244 track FastEthernet0/1 ! interface FastEthernet0/1 ip address ip address 192.168.100.1 255.255.255.252 router bgp 100 no synchronization network 172.16.10.0 network 172.16.20.0 network 172.16.30.0 neighbor 192.168.133.2 remote-as 100 neighbor 192.168.133.2 prefix-list ABC in neighbor 172.16.10.3 remote-as 100 no auto-summary ! ip prefix-list ABC seq 5 permit 0.0.0.0/0 end Router B ------------------------------------ interface FastEthernet0/0 ip address 172.16.10.3 255.255.255.0 standby priority 100 standby 244 ip 172.16.10.1 standby 244 preempt standby 244 track FastEthernet0/1 ! interface FastEthernet0/1 ip address ip address 192.168.100.1 255.255.255.252 router bgp 100 no synchronization network 172.16.10.0 network 172.16.20.0 network 172.16.30.0 neighbor 192.168.100.2 remote-as 100 neighbor 192.168.100.2 prefix-list ABC in neighbor 172.16.10.2 remote-as 100 no auto-summary ! ip prefix-list ABC seq 5 permit 0.0.0.0/0 end Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=49807&t=49807 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
