>
> Bill,
>
> I've had a symptom a bit like this when I've done something foolish like
>
> router bgp 1234
> network 192.10.10.0
>
> ip route 192.10.10.0 255.255.255.0 null0 254
> ^^^
> (oops)
>
> When another route gets into the FIB with a lower administrative weight
> you see a flap.
Seen that, but that doesn't show in either router.
> Not sure how you can get a lower admin weight than connected though.
> Is the interface line protocol flapping?
Nope.
> How are you originating the route in BGP? Redist connected? network?
router bgp 4555
no synchronization
bgp dampening
network 198.32.64.0
redistribute connected metric 50 weight 3500
> Try debugging the BGP session and see if you see withdrawals and
> announcements.
I don't see them from the origin. I'll check w/ the other side.
>
> Alex Bligh
> GX Networks (formerly Xara Networks)
>
> >
> > Ok, I'm at ropes end....
> >
> > >sh ip route 198.32.64.12
> > Routing entry for 198.32.64.0/24
> > Known via "connected", distance 0, metric 0 (connected)
> > Redistributing via bgp 4555
> > Advertised by bgp 4555 metric 50 weight 3500
> > Routing Descriptor Blocks:
> > * directly connected, via FastEthernet2/0
> > Route metric is 0, traffic share count is 1
> > >sh ip bgp 198.32.64.12
> > BGP routing table entry for 198.32.64.0/24, version 1618391
> > Paths: (1 available, best #1, advertised over EBGP)
> > Local
> > 0.0.0.0
> > Origin IGP, localpref 100, weight 32768, valid, sourced, local, best
> > >sh ip bgp sum
> > ...
> > 198.32.146.10 4 226 785093 20878 1617928 0 0 1w4d 51493
> > ...
> >
> > from 198.32.146.10
> > >sh ip route 198.32.64.12
> > % Network not in table
> > >sh ip bgp 198.32.64.12
> > BGP routing table entry for 198.32.64.0/24, version 14990982
> > Paths: (1 available, no best path, advertised over IBGP, EBGP)
> > 4555 (history entry)
> > 198.32.146.11 from 198.32.146.11 (192.0.2.10)
> > Origin IGP, metric 1, external
> > Dampinfo: penalty 11024, flapped 331 times in 04:21:30
> > >
> >
> > Any pointers on why the cisco code might think this route is "flapping"?
> >
> > --bill
>
>
>
-- --bill
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:13 EDT