I've been studying BGP using several books and papers. One of which is the Cisco Academy Semester 5 lab companion. So far it's been pretty good but Lab 8-3 drives me nuts.
3 routers.. 3 AS R1--------R2--------R3 AS100 AS300 AS65000 The idea is to have everyone share routes(did that) and then to filter off the AS65000 number as the update is sent ot R1(did that) The kicker was I was *supposed* be able to ping R3 from R1 after this.. no way.. wasnt going to happen. The only network statements were the loopbacks for each router.. I was able to ping r3 AFTER I added the network statement to R2 that id'ed the interface IP between R2 and R1. That was not in the lab.. If someone who has this lab take a look and explain why the ping should or should not work? Thanks MikeS PS- I really am learning to dislike BGP right now ;) ---lab configs used---- hostname R1 ! ! memory-size iomem 10 ip subnet-zero ! interface Loopback0 ip address 201.1.1.1 255.255.255.0 ip directed-broadcast ! interface FastEthernet0/0 no ip address no ip directed-broadcast ! interface Serial0/0 ip address 192.168.1.5 255.255.255.252 no ip directed-broadcast no ip mroute-cache no fair-queue ! router bgp 100 no synchronization network 201.1.1.0 neighbor 192.168.1.6 remote-as 300 neighbor 202.2.2.2 remote-as 300 ! no ip classless no ip http server ! ! ! line con 0 transport input none line aux 0 line vty 0 4 login ! no scheduler allocate end R1# hostname R2 ! ! ip subnet-zero ! ! ! interface Loopback0 ip address 202.2.2.2 255.255.255.0 no ip directed-broadcast ! interface Ethernet0 no ip address no ip directed-broadcast shutdown media-type 10BaseT ! interface Serial0 ip address 172.24.1.17 255.255.255.252 no ip directed-broadcast no ip mroute-cache clockrate 56000 ! interface Serial3 ip address 192.168.1.6 255.255.255.252 no ip directed-broadcast clockrate 1000000 ! router bgp 300 no synchronization network 202.2.2.0 neighbor 172.24.1.18 remote-as 65000 neighbor 192.168.1.5 remote-as 100 neighbor 192.168.1.5 remove-private-AS ! !if I add network 192.168.1.0, I can ping R3 from R1. Without it..no go no ip classless ! ! line con 0 transport input none line aux 0 line vty 0 4 login ! end R2# hostname R3 ! ! no ip subnet-zero ! ! process-max-time 200 ! interface Loopback0 ip address 203.3.3.3 255.255.255.0 ip directed-broadcast ! interface Ethernet0 no ip address no ip directed-broadcast shutdown ! interface Serial0 ip address 172.24.1.18 255.255.255.252 no ip directed-broadcast ! router bgp 65000 no synchronization network 203.3.3.0 neighbor 172.24.1.17 remote-as 300 ! no ip classless ! ! line con 0 transport input none line aux 0 line vty 0 4 ! end R3# Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37749&t=37749 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
