From: Cisco Nuts (cisconuts@hotmail.com)
Date: Thu Nov 17 2005 - 11:38:21 GMT-3
Hi Group:I am trying to set up BGP ORF filtering b/w 2 routers.My config
is as follow: r5#sh run | beg router bgp | address-family
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 5.5.5.6 remote-as 65078
no auto-summary
!
address-family ipv4
neighbor 5.5.5.6 activate
no auto-summary
no synchronization
network 28.119.16.0 mask 255.255.255.0
network 28.119.17.0 mask 255.255.255.0
network 150.5.5.0 mask 255.255.255.0
aggregate-address 28.119.16.0 255.255.254.0
exit-address-family
sw1#sh run | beg router bgp | address-family
router bgp 65078
bgp log-neighbor-changes
neighbor 5.5.5.5 remote-as 100
neighbor 172.16.78.3 remote-as 65078
!
address-family ipv4
neighbor 5.5.5.5 activate
neighbor 5.5.5.5 capability orf prefix-list send
neighbor 5.5.5.5 prefix-list FILTER in
no neighbor 172.16.78.3 activate
no auto-summary
no synchronization
exit-address-family sw1#sh ip prefix-list FILTER | b seq
seq 5 permit 28.119.16.0/23
sw1#bs | b N
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd5.5.5.5 4 100 65 61 2
0 0 00:32:48 1 sw1#sh ip bgp | beg Net
Network Next Hop Metric LocPrf Weight Path
*> 28.119.16.0/23 5.5.5.5 0 0 100 i
sw1# If you notice, I have not yet configured the orf filter on R5 but
SW1 is already filtering and only installing one route in the BGP table
as compared to 4. Question/Clarification: Is R5 sending all the 4 routes
but SW1 is having to actually process them before it installs only 1
route in the BGP table? Since R5 does not have the orf filter configured.
Thanks.
This archive was generated by hypermail 2.1.4 : Thu Dec 01 2005 - 09:12:07 GMT-3