[6bone] routing problem
Sascha E. Pollok
sp@iphh.net
Mon, 12 Aug 2002 22:26:56 +0200 (CEST)
Hey folks,
while this is definitely funny:
cr4.hamburg1#sh bgp ipv6 2001:610::/35
BGP routing table entry for 2001:610::/35, version 201014
Paths: (0 available, no best path)
Flag: 0x820
Advertised to peer-groups:
PEERS
Isn't it? As you see, the cisco knows the path
but does not know any paths towards the destination :-)
-Sascha
On Mon, 12 Aug 2002, Daniel Austin wrote:
> Hi,
>
> 2001:610::/35 is not in our routing table from any peer.
> We're seeing 2001:610::/32 from the following:
>
> --cut--
> BGP routing table entry for 2001:610::/32
> Paths: (3 available, best #3, table Default-IP-Routing-Table)
> Advertised to non peer-group peers:
> 3ffe:200:1:81::1 3ffe:1200:1002:1::f1 3ffe:4005:0:1::d 3ffe:4005:0:1::19
> 3ffe:4005:0:1::23 3ffe:4005:0:1::27
> 1654 8954 1103
> 3ffe:200:1:81::1 from 3ffe:200:1:81::1 (193.10.66.219)
> Origin IGP, localpref 100, valid, external
> Community: 24765:200 24765:2200 24765:7000
> Last update: Mon Aug 12 13:44:10 2002
>
> 6726 1103
> 3ffe:4005:0:1::16 from 3ffe:4005:0:1::16 (80.71.6.94)
> Origin IGP, localpref 100, valid, internal
> Community: 24765:300 24765:1800 24765:8009
> Last update: Sat Aug 10 18:18:25 2002
>
> 3265 1103
> 3ffe:4005::1 from 3ffe:4005::1 (62.24.229.120)
> (fe80::2d0:b7ff:fe49:b3cc)
> Origin IGP, localpref 100, valid, internal, best
> Community: 24765:100 24765:1800 24765:6010
> Last update: Fri Aug 9 21:34:49 2002
> --cut--
>
>
> With Thanks,
>
> Daniel Austin,
> Managing Director,
> kewlio.net Limited.
> <daniel@kewlio.net>
>
> ----- Original Message -----
> From: "Jorgensen, Roger" <RJorgensen@upctechnology.com>
> To: "'Gert Doering'" <gert@space.net>; "Wim Biemolt"
> <Wim.Biemolt@surfnet.nl>
> Cc: <6bone@ISI.EDU>
> Sent: Monday, August 12, 2002 8:42 PM
> Subject: RE: [6bone] routing problem
>
>
> > Hi,
> >
> > We're geting the 2001:610::/35 from many of our peers, and
> > we're also seing the 2001:610::/32 from even more peers.
> >
> > Seems like the ghost bug is out there again... this is what
> > we see, and there are some common as path's in all of them,
> >
> >
> > BGP routing table entry for 2001:610::/35, version 95785
> > Paths: (26 available, best #21, table Global-IPv6-Table)
> > Advertised to non peer-group peers:
> > 2001:6C8:0:FFFD::12 2001:730::1:1 2001:730::1:3 2001:730::1:5
> > 2001:730::1:7
> > 2001:730::1:F 2001:730::1:15 2001:730::1:19 2001:730::1:1D
> > 2001:730::1:21
> > 2001:730::1:23 2001:730::1:29 2001:730::1:2F 2001:730::1:31
> > 2001:730::1:33
> > 2001:730::1:35 2001:730::1:37 2001:730::1:39 2001:730::1:3B
> > 2001:730::1:3F
> > 2001:730::1:41 2001:730:0:2::AAE2 2001:740:0:102::1:0 2001:768:E:24::1
> > 2001:778:11:4::2 2001:7F8:2:800F::2 3FFE:2000:0:40F::22F
> > 3FFE:2501:100::21
> > 3FFE:2900:1:5::1 3FFE:4006:0:3::11 3FFE:4008:1::D 3FFE:81F1:1:2022::1
> > 3FFE:8270:0:1::52
> > 2012 513 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 2001:730::1:33 from 2001:730::1:33 (193.224.190.128)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 2012:200 2012:513 6830:60003 6830:60011
> > 2012 513 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only)
> > 2001:730::1:33 from 2001:730::1:33 (193.224.190.128)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 2012:200 2012:513
> > 790 3274 6175 10109 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242)
> > 2001:730::1:7 from 2001:730::1:7 (193.94.250.58)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 790 3274 6175 10109 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242), (received-only)
> > 2001:730::1:7 from 2001:730::1:7 (193.94.250.58)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 559 513 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 3FFE:2000:0:40F::22F from 3FFE:2000:0:40F::22F (130.59.32.38)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 559 513 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only)
> > 3FFE:2000:0:40F::22F from 3FFE:2000:0:40F::22F (130.59.32.38)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 3292 109 6435 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242)
> > 2001:6C8:0:FFFD::12 from 2001:6C8:0:FFFD::12 (195.249.8.172)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 3292 109 6435 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242), (received-only)
> > 2001:6C8:0:FFFD::12 from 2001:6C8:0:FFFD::12 (195.249.8.172)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 6726 24765 6435 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242)
> > 2001:730::1:19 from 2001:730::1:19 (80.84.236.164)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 6726 24765 6435 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242), (received-only)
> > 2001:730::1:19 from 2001:730::1:19 (80.84.236.164)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 8758 24765 4618 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242)
> > 3FFE:4006:0:3::11 from 3FFE:4006:0:3::11 (212.25.27.46)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011 24765:200 24765:800 24765:3500
> > 24765:7005
> > 8758 24765 4618 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242), (received-only)
> > 3FFE:4006:0:3::11 from 3FFE:4006:0:3::11 (212.25.27.46)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 24765:200 24765:800 24765:3500 24765:7005
> > 8973 24765 4618 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242)
> > 3FFE:4008:1::D from 3FFE:4008:1::D (192.16.124.2)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 8973 24765 4618 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242), (received-only)
> > 3FFE:4008:1::D from 3FFE:4008:1::D (192.16.124.2)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 6175 10109 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 3FFE:2900:1:5::1 from 3FFE:2900:1:5::1 (208.19.223.30)
> > Origin IGP, metric 0, localpref 100, valid, external,
> > atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 6175 10109 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only) 3FFE:2900:1:5::1 from
> > 3FFE:2900:1:5::1 (208.19.223.30)
> > Origin IGP, metric 0, localpref 100, valid, external,
> > atomic-aggregate
> > 20834 513 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 3FFE:8270:0:1::52 from 3FFE:8270:0:1::52 (80.71.0.50)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 20834 513 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only)
> > 3FFE:8270:0:1::52 from 3FFE:8270:0:1::52 (80.71.0.50)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 15589 5609 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 2001:730::1:F from 2001:730::1:F (192.168.1.12)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 15589 5609 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only)
> > 2001:730::1:F from 2001:730::1:F (192.168.1.12)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 5609 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 2001:730::1:9 from 2001:730::1:9 (163.162.170.129)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate, best
> > Community: 6830:60003 6830:60011
> > 5609 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only)
> > 2001:730::1:9 from 2001:730::1:9 (163.162.170.129)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 8379 6435 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242)
> > 2001:768:E:24::1 from 2001:768:E:24::1 (195.143.108.166)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > Community: 6830:60003 6830:60011
> > 8379 6435 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by 1103
> > 145.145.249.242), (received-only)
> > 2001:768:E:24::1 from 2001:768:E:24::1 (195.143.108.166)
> > Origin IGP, localpref 100, valid, external, atomic-aggregate
> > 12337 15589 5609 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242)
> > 2001:730::1:31 from 2001:730::1:31 (62.128.0.14)
> > Origin IGP, metric 10, localpref 100, valid, external,
> > atomic-aggregate
> > Community: 6830:60003 6830:60011 12337:6004
> > 12337 15589 5609 9264 7660 2500 4725 1752 6939 3425 1103, (aggregated by
> > 1103 145.145.249.242), (received-only)
> > 2001:730::1:31 from 2001:730::1:31 (62.128.0.14)
> > Origin IGP, metric 10, localpref 100, valid, external,
> > atomic-aggregate
> > Community: 12337:6004
> >
> >
> >
> > ---
> > Roger Jorgensen (rjorgensen@upctechnology.com)
> > System Engineer @ engineering - UPC Technology
> > handles: ROJO1-6BONE ROJO9-RIPE RJC10-NORID
> >
> >
> > > -----Original Message-----
> > > From: Gert Doering [mailto:gert@space.net]
> > > Sent: Monday, August 12, 2002 9:20 PM
> > > To: Wim Biemolt
> > > Cc: 6bone@ISI.EDU
> > > Subject: Re: [6bone] routing problem
> > >
> > >
> > > Hi,
> > >
> > > (I am copying the 6bone mailing list back in, as I think this
> > > is a pretty
> > > generic problem - I hope you don't mind)
> > >
> > > On Mon, Aug 12, 2002 at 08:56:09PM +0200, Wim Biemolt wrote:
> > > > ==> From: Gert Doering
> > > >
> > > > > To clarify this: this is not an effect of "caching" of
> > > any sort. It's
> > > > > just plain buggy router implementations that don't handle
> > > withdrawals
> > > > > correctly.
> > > >
> > > > So I can only hope that a buggy router implementation also
> > > means a memory
> > > > leak or something like that causing them to reboot in the
> > > real near future?
> > >
> > > No. In our case, the /35 staid in the table until I finally
> > > managed to
> > > reach someone at Viagenie who cleared some sessions... the BT /35 got
> > > stuck at Chello, and after clearing their sessions, at Viagenie.
> > >
> > > > The only other option I see is switch back to our /35. We
> > > are using IPv6
> > > > as production.
> > >
> > > So are we...
> > >
> > > > Being without any decent IPv6 connectivity for too long
> > > > won't do our case for IPv6 any good I'm afraid.
> > >
> > > No :-((
> > >
> > > My recommendation would be to contact all your peers and
> > > check the different
> > > paths seen everywhere for "common tails". Then contact the
> > > AS(es) that you
> > > see in the first hop of the "common tail" (in your case, as
> > > far as I could
> > > see, Chello and this Japanese AS) and ask them to check their
> > > tables for
> > > the prefix, and preferably clear some BGP sessions (upstream and/or
> > > downstream).
> > >
> > > In the last case, clearing session at Chello and yelling at Viagenie
> > > helped... but as I said, this time, Viagenie hasn't been in
> > > the paths
> > > (yet?), but a new japanese AS that I haven't seen before.
> > >
> > > This takes some time, though (1-2 days). If you can't spend
> > > that time,
> > > you'll have to announce both the /32 and the /35, establish contact to
> > > the suspect ASes, withdraw the /35 again, and hope that you got the
> > > right ones.
> > >
> > > Feel free to contact me to get an "show bgp ipv6 ..." output
> > > from here.
> > >
> > > Gert Doering
> > > -- NetMaster
> > > --
> > > Total number of prefixes smaller than registry allocations:
> > > 46871 (46631)
> > >
> > > SpaceNet AG Mail: netmaster@Space.Net
> > > Joseph-Dollinger-Bogen 14 Tel : +49-89-32356-0
> > > 80807 Muenchen Fax : +49-89-32356-299
> > >
> > > _______________________________________________
> > > 6bone mailing list
> > > 6bone@mailman.isi.edu
> > > http://mailman.isi.edu/mailman/listinfo/6bone
> > >
> > _______________________________________________
> > 6bone mailing list
> > 6bone@mailman.isi.edu
> > http://mailman.isi.edu/mailman/listinfo/6bone
> >
>