Re: Bad bad routing problems?

["David G. Andersen" <dga () lcs mit edu>]

In the last few days, it's been advertised, but often
withdrawn.  Perhaps the timing of the announces and
withdrawls will help you:

MIT saw it advertised via 1 701 8001 4276:
http://bgp.lcs.mit.edu/bgpview.cgi?time=day&prefix=216.223.192.0%2F19&rel=eq&table=updates&action=list

PSG (Randy Bush's BGP feed) saw it via 2914 8001 4276:
http://bgp.lcs.mit.edu/bgpview.cgi?time=day&prefix=216.223.192.0%2F19&rel=eq&table=ns0_psg_com_updates&action=list

Playground.net saw it via 14177 15290 7018 701 8001 4276:
http://bgp.lcs.mit.edu/bgpview.cgi?time=day&prefix=216.223.192.0%2F19&rel=eq&table=nortel_ron_lcs_mit_edu_updates&action=list

... and so on.  (Change the "table" menu to see a different view)

  -Dave

On Sat, Aug 31, 2002 at 11:25:00AM -0500, Malayter, Christopher mooed:
> I'm not receiving that network at all.
>
> I looked at our border to sprint, genuity, c&w, PSI, and our AADS peers.
>
> Sorry to not be of more assistance.
>
> -Chris
>
>
> -----Original Message-----
> From: Mike Tancsa [mailto:mike () sentex net]
> Sent: Saturday, August 31, 2002 11:14 AM
> To: Gerald
> Cc: nanog () merit edu
> Subject: Re: Bad bad routing problems?
>
>
>
>
> Strange, from my network I see you via GT and via Telus but not via AT&T
>
>  From me (as11647)
> BGP routing table entry for 216.223.192.0/19
> Paths: (2 available, best #2, table Default-IP-Routing-Table)
>    Not advertised to any peer
>    852 174 8001 4276
>      209.115.141.1 from 209.115.141.1 (209.115.137.196)
>        Origin IGP, localpref 100, valid, external
>        Last update: Sat Aug 31 08:47:55 2002
>
>    6539 8001 4276
>      64.7.143.42 from 64.7.143.42 (64.7.143.42)
>        Origin IGP, localpref 100, valid, internal, best
>        Community: 6539:30
>        Last update: Sat Aug 31 08:47:30 2002
>
>
>  From the AT&T CANADA routeserver  (route-server.east.attcanada.com)
> AT&T route server
> route-server.east>show ip bgp 216.223.192.0/19
> % Network not in table
> route-server.east>
>
> AT&T Canada gets to 8001 via Williams, but I dont see your /19 through them.
>
> route-server.east>show ip bgp regex _8001_
> BGP table version is 2266132, local router ID is 216.191.65.118
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
>     Network          Next Hop            Metric LocPrf Weight Path
> *>i12.129.128.0/24  216.191.64.253                 80      0 7911 8001 22420
> i
> *>i63.74.146.0/23   216.191.64.253                 80      0 7911 8001 23368
> i
>
>
> At 10:54 AM 8/31/2002 -0400, Gerald wrote:
>
> > We are seeing bad routing problems from outside our network. Can anyone
> > corroborate this or help?
> >
> > We are on AS4276 and all traffic from us to our upstream seems good. Great
> > way to spend holiday weekend. /me wonders if anyone is even awake on the
> > NANOG list. :-)
> >
> > 2 addresses in our network I've tested with are:
> >
> > 216.223.200.14
> > and 216.223.192.68
> >
> > Many many traces done, some interesting ones below:
> >
> > Here is a succesful traceroute:
> > traceroute to 216.223.200.14 (216.223.200.14), 30 hops max, 40 byte
> >   1   <10 ms   <10 ms   <10 ms  rt1.altair7.com [209.11.155.129]
> >   2   <10 ms    15 ms    16 ms  209.10.41.130
> >   3   <10 ms    16 ms    15 ms  ge-6-1-0.core1.sjc1.globix.net
> [209.10.2.193]
> >   4   <10 ms    16 ms    16 ms  so-4-2-0.core1.sjc4.globix.net 
> > [209.10.11.221]
> >   5    63 ms    46 ms    47 ms  so-1-0-0.core2.cgx2.globix.net 
> > [209.10.10.150]
> >   6    62 ms    63 ms    47 ms  so-0-0-0.core1.cgx2.globix.net 
> > [209.10.10.157]
> >   7    78 ms    94 ms    94 ms  so-1-0-0.core2.nyc8.globix.net 
> > [209.10.10.162]
> >   8    78 ms    94 ms    94 ms  pos15-0.core2.nyc1.globix.net
> [209.10.11.169]
> >   9    78 ms    94 ms    94 ms  s5-0-peer1.nyc3.globix.net [209.10.12.18]
> >  10    78 ms    94 ms    94 ms  nyiix.peer.nac.net [198.32.160.20]
> >  11    78 ms    94 ms    93 ms  internetchannel.customer.nac.net 
> > [209.123.10.34]
> >  12    78 ms    94 ms    94 ms  auth-2.inch.com [216.223.200.14]
> >
> > > These show failures before reaching our network:
> > >
> > > traceroute to 216.223.192.68 (216.223.192.68): 1-30 hops, 38 byte
> packets
> > >  1  paleagw4.hpl.external.hp.com (192.6.19.2)  1.95 ms  1.95 ms  5.86 ms
> > >  2  palgwb01-vbblpa.americas.hp.net (15.243.170.49)  0.976 ms  0.977 ms
> > > 0.976 ms
> > >  3  svl-edge-15.inet.qwest.net (65.115.64.25)  0.976 ms !H  *  0.977 ms
> !H
> > >  4  * * *
> > >  5  * * *
> > >
> > >
> > >
> > > traceroute to 216.223.192.68 (216.223.192.68), 30 hops max, 40 byte
> > > packets
> > >  1  e3-13.foundry1.cs.wisc.edu (198.133.224.116)  2.195 ms  1.754 ms
> > > 1.663 ms
> > >  2  e15.extreme1.cs.wisc.edu (128.105.1.1)  0.856 ms  0.765 ms  0.737 ms
> > >  3  144.92.128.194 (144.92.128.194)  1.550 ms  1.171 ms  1.264 ms
> > >  4  * * *
> > >  5  * * *
> > >
> > > All global crossing traces seem to loop within their router:
> > > traceroute to 216.223.192.68 (216.223.192.68), 30 hops max, 40 byte
> > > 1 64.214.13.1 (64.214.13.1) 0.695 ms 0.889 ms 0.485 ms 0.453 ms 0.350 ms
> > > 2 64.214.13.1 (64.214.13.1) 4.535 ms !N ms * ms 0.574 ms !N ms
> > > 3 * (64.214.13.1) 64.214.13.1 ms 0.408 ms !N ms * ms 0.425 ms
> > > 4 64.214.13.1 (64.214.13.1) 0.741 ms !N ms * ms 0.542 ms !N ms
> > >
> > > traceroute to 216.223.200.14 (216.223.200.14), 30 hops max, 40 byte
> > >  1  ROUTER6.VINEYARD.NET (204.17.195.236)  0.401 ms  0.342 ms  0.325 ms
> > >  2  bos-edge-01.inet.qwest.net (65.115.97.141)  7.249 ms  7.089 ms
> 6.943
> > > ms
> > >  3  * * *
> > >  4  * * bos-edge-01.inet.qwest.net (65.115.97.141)  9.885 ms !H
> > >  5  * * *
> > >  6  * * *
> > >  7  bos-edge-01.inet.qwest.net (65.115.97.141)  7.330 ms !H * *
> > >  8  * * *
> > >  9  * * *
> > > 10  * * *
> > > 11  * * *
> > > 12  * * *
> > > 13  * * *
> > > 14  * * *
> > > 15  * bos-edge-01.inet.qwest.net (65.115.97.141)  7.021 ms !H *
> > > 16  * bos-edge-01.inet.qwest.net (65.115.97.141)  172.856 ms !H *
> > > 17  * * *
> > > 18  * * *
> > > 19  * * bos-edge-01.inet.qwest.net (65.115.97.141)  7.127 ms !H
> > > 20  * * bos-edge-01.inet.qwest.net (65.115.97.141)  6.787 ms !H
> > > 21  * * bos-edge-01.inet.qwest.net (65.115.97.141)  61.972 ms !H
> > > 22  * bos-edge-01.inet.qwest.net (65.115.97.141)  22.525 ms !H *
> > > 23  * bos-edge-01.inet.qwest.net (65.115.97.141)  6.944 ms !H *
> > > 24  bos-edge-01.inet.qwest.net (65.115.97.141)  15.922 ms !H * *
> > > 25  bos-edge-01.inet.qwest.net (65.115.97.141)  11.212 ms !H *  6.895 ms
> > >
> > > This one works:
> > >
> > > traceroute to 216.223.192.68 (216.223.192.68), 30 hops max, 40 byte
> > > 1 tin-V8.cac.washington.edu (140.142.3.1) 1 ms 0 ms 1 ms
> > > 2 uwbr2-GE1-1.cac.washington.edu (140.142.155.24) 1 ms 1 ms 0 ms
> > > 3 cnsp2-wes-GE0-1-0.pnw-gigapop.net (198.107.151.5) 1 ms 1 ms 1 ms
> > > 4 ge-7-2-0.r04.sttlwa01.us.bb.verio.net (129.250.10.77) 0 ms 0 ms 1 ms
> > > 5 p4-1-0-0.r03.sttlwa01.us.bb.verio.net (129.250.2.230) 0 ms 1 ms 0 ms
> > > 6 p16-0-1-0.r20.sttlwa01.us.bb.verio.net (129.250.2.14) 1 ms 0 ms 1 ms
> > > 7 p16-0-1-2.r21.plalca01.us.bb.verio.net (129.250.5.83) 23 ms 23 ms 23
> ms
> > > 8 p64-0-0-0.r20.plalca01.us.bb.verio.net (129.250.3.76) 22 ms 23 ms 22
> ms
> > > 9 p16-1-1-1.r20.dllstx01.us.bb.verio.net (129.250.4.104) 57 ms 57 ms 57
> ms
> > > 10 p64-0-0-0.r21.dllstx01.us.bb.verio.net (129.250.3.41) 57 ms 57 ms 57
> ms
> > > 11 p16-2-0-0.r00.stngva01.us.bb.verio.net (129.250.5.35) 87 ms 87 ms 88
> ms
> > > 12 p16-0-0-0.r02.stngva01.us.bb.verio.net (129.250.5.15) 87 ms 88 ms 87
> ms
> > > 13 p16-7-0-0.r02.mclnva02.us.bb.verio.net (129.250.5.47) 88 ms 88 ms 88
> ms
> > > 14 p4-3-0.r00.mclnva02.us.bb.verio.net (129.250.5.249) 88 ms 88 ms 88 ms
> > > 15 mae-east-atm.peer.nac.net (198.32.187.103) 89 ms 89 ms 90 ms
> > > 16 a9-0-1064.msfc1.nyc.nac.net (209.123.11.41) 95 ms 95 ms 96 ms
> > > 17 internetchannel.customer.nac.net (209.123.10.34) 96 ms 96 ms 96 ms
> > > 18 s0-varick-gw.inch.com (216.223.200.206) 100 ms 100 ms 100 ms
> > > 19 rubber-biscuit.inch.com (216.223.192.98) 99 ms 99 ms 99 ms
> > > 20 rubber-biscuit.inch.com (216.223.192.98) 99 ms !H 100 ms !H 98 ms !H
>
> --------------------------------------------------------------------
> Mike Tancsa,                                            tel +1 519 651 3400
> Sentex Communications,                          mike () sentex net
> Providing Internet since 1994                    www.sentex.net
> Cambridge, Ontario Canada                       www.sentex.net/mike

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