mike at sentex
Nov 11, 2009, 9:26 AM
Post #1 of 1
(347 views)
Permalink
|
|
bgp redistributed conn bug ?
|
|
Not sure if this is a bug or a 'feature'
While starting to do some testing with Quagga 0.99.15, FreeBSD 7.x
and 8.x, I noticed that with the following simple config
AS2 ---- AS1
aka
1.1.1.2 (i3) ----------- 1.1.1.1 (ich10)
on host ich10 (1.1.1.1)
router bgp 1
bgp router-id 1.1.1.1
bgp log-neighbor-changes
redistribute connected
redistribute static
neighbor 1.1.1.2 remote-as 2
neighbor 1.1.1.2 description i3
neighbor 1.1.1.2 update-source 1.1.1.1
neighbor 1.1.1.2 next-hop-self
neighbor 1.1.1.2 soft-reconfiguration inbound
neighbor 1.1.1.2 prefix-list I3-IN in
neighbor 1.1.1.2 prefix-list I3-OUT out
!
ip prefix-list I3-IN seq 5 permit 2.2.2.0/30
ip prefix-list I3-OUT seq 5 permit 10.255.255.0/24
and on host i3 (1.1.1.2)
router bgp 2
bgp router-id 1.1.1.2
bgp log-neighbor-changes
redistribute connected
redistribute static
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 description ich10
neighbor 1.1.1.1 update-source 1.1.1.2
neighbor 1.1.1.1 next-hop-self
neighbor 1.1.1.1 soft-reconfiguration inbound
neighbor 1.1.1.1 prefix-list ICH10-IN in
neighbor 1.1.1.1 prefix-list ICH10-OUT out
!
ip prefix-list ICH10-IN seq 5 permit 10.255.255.0/24
ip prefix-list ICH10-OUT seq 5 permit 2.2.2.0/30
ip prefix-list ICH10-OUT seq 1000 deny any
From the ICH10 box (AS1), I should in theory only see one prefix
ich10.sentex.ca# sh ip bgp sum
BGP router identifier 1.1.1.1, local AS number 1
RIB entries 51, using 3264 bytes of memory
Peers 1, using 2520 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ
Up/Down State/PfxRcd
1.1.1.2 4 2 40 52 0 0 0 00:00:50 1
Total number of neighbors 1
ich10.sentex.ca#
ich10.sentex.ca# sh ip bgp nei 1.1.1.2 routes
BGP table version is 0, local router ID is 1.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2.2.2.0/30 1.1.1.2 1 0 2 ?
Total number of prefixes 1
ich10.sentex.ca#
Which is correct, as 2.2.2.0/30 is a connected interface.... And on i3,
i3# sh ip bgp nei 1.1.1.1 adv
BGP table version is 0, local router ID is 1.1.1.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2.2.2.0/30 1.1.1.2 1 32768 ?
Total number of prefixes 1
i3#
shows I am only sending that one route. All looks good so far!
Yet, if I do
ich10.sentex.ca# sh ip bgp nei 1.1.1.2 received-routes
BGP table version is 0, local router ID is 1.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2.2.2.0/30 1.1.1.2 1 0 2 ?
*> 10.54.96.0/29 1.1.1.2 1 0 2 ?
*> 10.128.128.0/30 1.1.1.2 1 0 2 ?
*> 10.172.6.0/29 1.1.1.2 1 0 2 ?
*> 10.177.194.16/29 1.1.1.2 1 0 2 ?
*> 64.7.133.144/30 1.1.1.2 1 0 2 ?
*> 64.7.143.40/29 1.1.1.2 1 0 2 ?
*> 64.7.149.40/29 1.1.1.2 1 0 2 ?
*> 64.7.153.72/29 1.1.1.2 1 0 2 ?
....
I see *all* of the connected interfaces on i3 being sent to AS1 from AS2.
Is this not a bug ?
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike [at] sentex
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
_______________________________________________
Quagga-users mailing list
Quagga-users [at] lists
http://lists.quagga.net/mailman/listinfo/quagga-users
|
