Hi David, Here "next policy" means the default BGP policy which by default accepts all BGP routes that pass sanity checks.
Vladi Sent from my BlackBerry® wireless device -----Original Message----- From: David water <dwater2...@gmail.com> Date: Tue, 4 May 2010 08:31:22 To: <juniper-nsp@puck.nether.net> Subject: [j-nsp] policy from JNCIP book Hi, I am trying to understand the policy in BGP, in JNCIP book we have following policy with term 1 to 3. Term 1 and 2 is rejecting all unwanted routes and term 3 is matching those are originating in C1 and reference to the next policy. So here next policy will be next term (term4) if so then it will be rejected ? if it is pointing to other policy then it is not define then will it mach to the BGP default policy to accept all EBGP routes? Please help me to understand. This policy is used in import at EBGP peer to accept the selected route. Same way if I want to match customer prefix route, lets say 1.1.1.0/24 then in term I will use route filter to match the prefix and then next-policy? term 1 { from { route-filter 0.0.0.0/0 through 0.0.0.0/7 reject; route-filter 0.0.0.0/1 prefix-length-range /1-/7 reject; } } term 2 { from { route-filter 0.0.0.0/0 prefix-length-range /29-/32 reject; route-filter 172.16.0.0/12 orlonger reject; route-filter 192.168.0.0/16 orlonger reject; route-filter 10.0.0.0/8 orlonger reject; } } term 3 { from as-path c1; then next policy; } term 4 { then reject; } -- David W. _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp