Re: Sprint routing issues

["Phil Howard" <phil-nanog () ipal net>]

jlewis () lewis org wrote:

> On Thu, 23 Mar 2000, Nick Bastin wrote:
>
> > > I can ping all of them, but none answer DNS queries.  Makes it tough to
> > > access their customers.
> >
> > Sprint has a master ticket #3461302 open for at least something related to
> > this problem, or at least that's what the engineer thought.  Apparently
> > they're having an 'issue' with a router on the east coast.  He muttered
> > something about gateway 13, but I didn't catch it all.
>
> I just got another call back to tell me that they'd isolated the problem
> to the Orlando, FL site where we connect to them.  I said "I don't think
> so."  All their NS servers are unreachable or unresponsive (to the whole
> net, not just me), and they think it's a bad circuit in Orlando?  It seems
> almost like the two callbacks I've gotten so far are from different parts
> of Sprint.  Neither seems to know what the other is doing.  Neither seems
> to know what's going on in general.  At least the first one knew there was
> some general "big problem" on their network.  Both are acting on the same
> ticket opened by a single phone call from me.
>
> ----------------------------------------------------------------------
>  Jon Lewis *jlewis () lewis org*|  Spammers will be winnuked or 
>  System Administrator        |  nestea'd...whatever it takes
>  Atlantic Net                |  to get the job done.
> _________http://www.lewis.org/~jlewis/pgp for PGP public key__________

I'm on CW.NET and I am seeing routing that doesn't make much sense to
me.  Things vary by host within a class C and by source address.  I can
reach some addresses within a class C but not others, and that varies
by the source address I am using.

tracing FROM 208.152.116.17 TO 209.207.224.196:

traceroute to 209.207.224.196 (209.207.224.196), 30 hops max, 40 byte packets
 1  208-128-66-16.ipv4.intur.net (208.128.66.16)  169.363 ms  157.531 ms  174.376 ms
 2  208-128-66-2.ipv4.intur.net (208.128.66.2)  177.345 ms  149.884 ms  139.444 ms
 3  208-152-121-1.ipv4.intur.net (208.152.121.1)  170.996 ms  149.054 ms  159.872 ms
 4  bar2-serial4-0-0-15-0.Chicagochd.cw.net (208.172.8.145)  189.807 ms  189.665 ms  179.858 ms
 5  acr2-loopback.Chicagochd.cw.net (208.172.2.62)  179.738 ms  209.73 ms  189.853 ms
 6  corerouter2.WillowSprings.cw.net (204.70.9.146)  179.814 ms  191.996 ms  207.478 ms
 7  core4.WillowSprings.cw.net (204.70.4.73)  189.864 ms  189.573 ms  189.914 ms
 8  cw-ip-eng-interconnects.WillowSprings.cw.net (206.157.77.94)  189.819 ms  179.604 ms  182.714 ms
 9  sl-bb11-chi-2-1.sprintlink.net (144.232.10.157)  176.883 ms  199.484 ms  169.924 ms
10  sl-bb11-atl-4-0.sprintlink.net (144.232.18.34)  209.803 ms  219.697 ms  209.885 ms
11  sl-bb10-atl-9-0.sprintlink.net (144.232.12.17)  209.813 ms  220.153 ms  209.832 ms
12  sl-bb11-rly-5-0.sprintlink.net (144.232.9.197)  209.502 ms  226.099 ms  229.827 ms
13  sl-bb5-dc-4-0-0.sprintlink.net (144.232.7.166)  219.826 ms  199.655 ms  210.105 ms
14  208.28.7.19 (208.28.7.19)  209.79 ms  199.643 ms  209.726 ms
15  sl-csg-1-0-0-T3.sprintlink.net (144.228.108.94)  229.768 ms  209.828 ms  209.876 ms
16  ns1.andover.net (209.207.224.196)  219.811 ms  229.701 ms  209.731 ms

tracing FROM 206.97.151.201 TO 209.207.224.196:

traceroute to 209.207.224.196 (209.207.224.196), 30 hops max, 40 byte packets
 1  eth-1.cisco-1.intur.net (206.97.149.1)  2.084 ms  2.077 ms  2.167 ms
 2  unassigned-private-host.in.30.172.in-addr.arpa (172.30.1.2)  3.575 ms  3.480 ms  3.458 ms
 3  bar2-serial4-0-0-15-0.Chicagochd.cw.net (208.172.8.145)  27.515 ms  27.499 ms  27.570 ms
 4  acr2-loopback.Chicagochd.cw.net (208.172.2.62)  28.523 ms  28.057 ms  27.915 ms
 5  corerouter2.WillowSprings.cw.net (204.70.9.146)  29.202 ms  28.836 ms  32.201 ms
 6  core4.WillowSprings.cw.net (204.70.4.73)  30.887 ms  52.848 ms  29.607 ms
 7  sl-chi-15-H1-0-T3.sprintlink.net (206.157.77.90)  30.392 ms  30.746 ms  30.570 ms
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *

Things are good up to core4.WillowSprings.cw.net, then there is a diversion.
Both of these netblocks are assignments from CW.NET.

It gets better:

Coming from the same IP that failed above, I now go to a different IP on the
same class C and I get:

tracing FROM 206.97.151.201 TO 209.207.224.41:

traceroute to 209.207.224.41 (209.207.224.41), 30 hops max, 40 byte packets
 1  eth-1.cisco-1.intur.net (206.97.149.1)  2.152 ms  2.028 ms  2.233 ms
 2  unassigned-private-host.in.30.172.in-addr.arpa (172.30.1.2)  3.576 ms  3.520 ms  3.494 ms
 3  bar2-serial4-0-0-15-0.Chicagochd.cw.net (208.172.8.145)  27.679 ms  27.531 ms  27.587 ms
 4  acr2-loopback.Chicagochd.cw.net (208.172.2.62)  28.065 ms  27.903 ms  27.850 ms
 5  corerouter2.WillowSprings.cw.net (204.70.9.146)  30.053 ms  29.332 ms  28.926 ms
 6  core4.WillowSprings.cw.net (204.70.4.73)  29.677 ms  29.752 ms  29.616 ms
 7  cw-ip-eng-interconnects.WillowSprings.cw.net (206.157.77.94)  42.546 ms  30.327 ms  30.951 ms
 8  sl-bb11-chi-2-1.sprintlink.net (144.232.10.157)  30.390 ms  30.738 ms  30.397 ms
 9  sl-bb11-atl-4-0.sprintlink.net (144.232.18.34)  55.761 ms  56.279 ms  55.871 ms
10  sl-bb10-atl-9-0.sprintlink.net (144.232.12.17)  55.918 ms  55.478 ms  56.495 ms
11  sl-bb11-rly-5-0.sprintlink.net (144.232.9.197)  66.480 ms  55.877 ms  58.161 ms
12  sl-bb5-dc-4-0-0.sprintlink.net (144.232.7.166)  56.151 ms  56.744 ms  56.812 ms
13  208.28.7.19 (208.28.7.19)  57.426 ms  56.306 ms  56.442 ms
14  sl-csg-1-0-0-T3.sprintlink.net (144.228.108.94)  56.827 ms  56.669 ms  58.161 ms
15  209.207.224.41 (209.207.224.41)  57.308 ms  57.681 ms  56.898 ms

And going there from the first source gets there, but by a slightly
different path right after core4.WillowSprings.cw.net.

tracing FROM 208.152.116.17 TO 209.207.224.41:

traceroute to 209.207.224.41 (209.207.224.41), 30 hops max, 40 byte packets
 1  208-128-66-16.ipv4.intur.net (208.128.66.16)  155.435 ms  172.896 ms  139.777 ms
 2  208-128-66-2.ipv4.intur.net (208.128.66.2)  159.756 ms  139.701 ms  150.207 ms
 3  208-152-121-1.ipv4.intur.net (208.152.121.1)  159.643 ms  169.688 ms  169.905 ms
 4  bar2-serial4-0-0-15-0.Chicagochd.cw.net (208.172.8.145)  179.529 ms  189.557 ms  179.911 ms
 5  acr2-loopback.Chicagochd.cw.net (208.172.2.62)  179.747 ms  189.858 ms  179.737 ms
 6  corerouter2.WillowSprings.cw.net (204.70.9.146)  179.79 ms  189.628 ms  180.291 ms
 7  core4.WillowSprings.cw.net (204.70.4.73)  189.295 ms  199.571 ms  199.833 ms
 8  sl-chi-15-H1-0-T3.sprintlink.net (206.157.77.90)  189.768 ms  189.707 ms  179.852 ms
 9  sl-bb11-chi-2-1.sprintlink.net (144.232.10.157)  180.013 ms  189.535 ms  179.877 ms
10  sl-bb11-atl-4-0.sprintlink.net (144.232.18.34)  209.77 ms  223.68 ms  206.015 ms
11  sl-bb10-atl-9-0.sprintlink.net (144.232.12.17)  209.726 ms  229.484 ms  209.799 ms
12  sl-bb11-rly-5-0.sprintlink.net (144.232.9.197)  209.806 ms  208.054 ms  199.559 ms
13  sl-bb5-dc-4-0-0.sprintlink.net (144.232.7.166)  250.126 ms  209.53 ms  219.904 ms
14  208.28.7.19 (208.28.7.19)  229.756 ms  229.641 ms  209.916 ms
15  sl-csg-1-0-0-T3.sprintlink.net (144.228.108.94)  269.96 ms  219.565 ms  229.851 ms
16  209.207.224.41 (209.207.224.41)  219.807 ms  237.806 ms  231.999 ms

Is Sprint advertising routes smaller than /24?

Has Sprint caused the route table in core4.WillowSprings.cw.net to be goofed?

-- 
| Phil Howard - KA9WGN | My current boycotts:  Amazon.Com, any DVD, Mattel
| phil-nospam () ipal net +--------------------------------------------------
| Dallas - Texas - USA | My current websites:  linuxhomepage.com, ham.org