I have the following problem, two routers are connected by ethernet. Here are my configurations for RouterA and RouterB RouterA: interface ethernet0 ip address 172.16.20.1 255.255.255.0 no shut int loopback0 ip address 192.68.11.1 255.255.255.0 router bgp 1 neighbor 172.16.20.2 remote-as 1 network 192.68.11.0 mask 255.255.255.0 RouterB: interface ethernet 0 ip address 172.16.20.2 255.255.255.0 no shut int loopback0 ip address 192.68.1.1 255.255.255.255 router bgp 1 neighbor 172.16.20.1 remote-as 1 When i use extended ping from 192.68.1.1 to 192.68.11.1 , it failed. But if i use standard ping from RouterB to 192.68.11.1 , it works. Does anybody know the reason why? ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]