So in my case, sanity checks mean the from action in term 3, if term 3 is true then only jump to next policy and if not then continue to the next term(term 4) and that will be reject, correct me if I am wrong.
On Tue, May 4, 2010 at 8:43 AM, <[email protected]> wrote: > 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 <[email protected]> > Date: Tue, 4 May 2010 08:31:22 > To: <[email protected]> > 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 [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > -- David W. _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
