The number of entries only implies the number of alternate paths available to reach that network. BGP will only use the best path available by default. In your example there is only one path available to that network. This is not indicative of any problems with BGP, only a lack of redundancy to that network. BGP is receiving and advertising this network just fine.
Excellent BGP books are Internet Routing Architectures by Sam Halabi and BGP4 Command Reference by William Parkhurst. JR -- Johnny Routin The "Routin" One ""Anil Gupte"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > If I look for BGP info on an IP using one of the Looking Glass sites > (specifically Mae-East) does the number of entries returned mean anything? > I have noticed that sometimes there are five or six entries and sometimes > only one or two. The number of upstream connections is two. If only one > entry exists, then is BGP broken? For example: > > BGP routing table entry for 216.91.141.0/24, version 7089796 > Paths: (1 available, best #1) > Advertised to peer-groups: > rr-pop > Advertised to non peer-group peers: > 198.32.187.122 > 6347 20068 > 64.241.88.17 (metric 175301) from 165.117.1.110 (165.117.1.110) > Origin IGP, metric 4294967294, localpref 100, valid, internal, best > Community: 2548:196 2548:229 2548:666 3706:168 6347:1002 6347:3000 > > To me that implies that there are no alternate routes, and so no BGP on this > route. Also, if there are more than two routes does that mean the routes > are better connected? > > What is the best resource for learning more about BGP? > > Thanx, > Anil Gupte Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42850&t=42847 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
