I need some clarification on the the neighbor distribute-list command used for filtering BGP updates.
The book I am reading gives the following example, and it is either a typo or I am just misunderstanding it. You have the following route filter configuration: Router bgp 100 Network 172.16.0.0 mask 255.255.0.0 Neighbor 172.16.3.1 remote-as 100 Neighbor 172.16.1.1 remote-as 100 distribute-list 1 out Access-list 1 deny 172.16.5.0 0.0.0.255 Access-list 1 permit 0.0.0.0 255.255.255.255 There is a diagram and 172.16.1.1/24 is on Neighbor 2 and 172.16.3.1/24 is on Neighbor 1 It then says that the above configuration does the following: The use of the distribute-list command and access-list 1 prevents the BGP routing updates from neighbor 1 propagating into neighbor 2's routing table. Also, in the diagram Neighbor 1 (172.16.3.1/24) is connected to 172.16.5.0/24 so to me is seems like there is a typo in the book and instead of having the config line read: Neighbor 172.16.1.1 remote-as 100 distribute-list 1 out I think it should read: Neighbor 172.16.3.1 remote-as 100 distribute-list 1 out This would then make the above statment correct in saying that it prevents the BGP routing updates from neighbor 1 propagating into neighbor 2's routing table. Please let me know if what I am saying sounds correct based on the above information and that it is in fact a typo, or if maybe I am just not understanding it correctly. Thanks, -Aaron Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24177&t=24177 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
