Mailing List Archive

Level3 routing failures in Denver
Seem to be seeing some routing failures on level3 in the Denver area. Anyone
aware of any Level3 outages in Denver?


Chris Stone
AxisInternet, Inc.
Level3 routing failures in Denver [ In reply to ]
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Chris,

Chris Stone wrote:
> Seem to be seeing some routing failures on level3 in the Denver area. Anyone
> aware of any Level3 outages in Denver?
- ----------------------------

BGp routes from Level 3 (Denver, CO) for 66.27.146.220

BGP routing table entry for 66.27.0.0/16
Bestpath Modifiers: deterministic-med
Paths: (2 available, best #1)
20001
AS-path translation: { ROADRUNNER-WEST }
lo-22.car1.Tustin1 (metric 13577) from lo-22.err1.Denver1
(lo-22.err1.Denver1)
Origin IGP, metric 0, localpref 100, valid, internal, best
Community: North_America Lclprf_100 Level3_Customer United_States
fGENU_Dial_DSL_Migration8 Prepend_4_to_AS2914
Originator: lo-22.car1.Tustin1
20001
AS-path translation: { ROADRUNNER-WEST }
lo-22.car1.Tustin1 (metric 13577) from lo-22.err2.Denver1
(lo-22.err2.Denver1)
Origin IGP, metric 0, localpref 100, valid, internal
Community: North_America Lclprf_100 Level3_Customer United_States
fGENU_Dial_DSL_Migration8 Prepend_4_to_AS2914
Originator: lo-22.car1.Tustin1



ping from Level 3 (Denver, CO) to 66.27.146.220

icmp_seq=0 time=60 ms
icmp_seq=1 time=56 ms
icmp_seq=2 time=56 ms
icmp_seq=3 time=60 ms
icmp_seq=4 time=60 ms
icmp_seq=5 time=56 ms
icmp_seq=6 time=56 ms
icmp_seq=7 time=76 ms
icmp_seq=8 time=60 ms
icmp_seq=9 time=56 ms

- ---- 66.27.146.220 statistics ----
10 packets transmitted, 10 packets received, 0% packet loss
rtt min/avg/median/max/mdev/stddev = 56/59.6/58/76/1.897/5.783 ms



traceroute from Level 3 (Denver, CO) to 66.27.146.220

1 ae-31-55.ebr1.Denver1.Level3.net (4.68.107.158) 4 msec
ae-31-51.ebr1.Denver1.Level3.net (4.68.107.30) 0 msec
ae-32-54.ebr2.Denver1.Level3.net (4.68.107.126) 0 msec
2 ae-1-100.ebr1.Denver1.Level3.net (4.69.132.37) 0 msec
ae-2.ebr1.Dallas1.Level3.net (4.69.132.106) 16 msec
ae-1-100.ebr1.Denver1.Level3.net (4.69.132.37) 12 msec
3 ae-4-4.car2.Tustin1.Level3.net (4.69.132.225) 48 msec 52 msec
ae-2.ebr1.Dallas1.Level3.net (4.69.132.106) 28 msec
4 ae-4-4.car2.Tustin1.Level3.net (4.69.132.225) 44 msec
ae-11-11.car1.Tustin1.Level3.net (4.69.132.221) 44 msec
ae-4-4.car2.Tustin1.Level3.net (4.69.132.225) 44 msec
5 ROADRUNNER.car1.Tustin1.Level3.net (4.71.104.150) 44 msec
ROADRUNNER.car1.Tustin1.Level3.net (4.79.140.38) 44 msec
ae-11-11.car1.Tustin1.Level3.net (4.69.132.221) 48 msec
6 ROADRUNNER.car1.Tustin1.Level3.net (4.71.104.150) 44 msec
POS0-1.GDGVCA1-GSR2.socal.rr.com (66.75.161.49) [AS20001
{ROADRUNNER-WEST}] 48 msec
ROADRUNNER.car1.Tustin1.Level3.net (4.71.104.150) 48 msec
7 SRP1-1.ORNGCA2-RTR2.socal.rr.com (24.30.162.68) [AS20001
{ROADRUNNER-WEST}] 48 msec 48 msec
POS0-0.GDGVCA1-GSR2.socal.rr.com (66.75.161.137) [AS20001
{ROADRUNNER-WEST}] 48 msec
8 SRP1-1.ORNGCA2-RTR2.socal.rr.com (24.30.162.68) [AS20001
{ROADRUNNER-WEST}] 48 msec
gig11-1.orngca2-cda1.socal.rr.com (24.30.162.211) [AS20001
{ROADRUNNER-WEST}] 48 msec
SRP1-1.ORNGCA2-RTR2.socal.rr.com (24.30.162.68) [AS20001
{ROADRUNNER-WEST}] 48 msec
9 * *
gig11-1.orngca2-cda1.socal.rr.com (24.30.162.211) [AS20001
{ROADRUNNER-WEST}] 48 msec
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * timeout !


regards,
/virendra

>
>
> Chris Stone
> AxisInternet, Inc.
>
>
> _______________________________________________
> Outages mailing list
> Outages at isotf.org
> http://isotf.org/mailman/listinfo/outages
>
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Level3 routing failures in Denver [ In reply to ]
Thanks - looks to be a Cogent problem - rerouted some traffic to use my Level3
connection and the inaccessible sites are accessible. But Cogent isn't routing
the traffic - just dropping:

[root at mail root]# traceroute corp-mail.uniserve.com
traceroute to corp-mail.uniserve.com (216.113.192.13), 30 hops max, 38 byte
packets
1 ai-core (38.116.133.1) 0.420 ms 0.413 ms 0.306 ms
2 f0-2.na01.b009854-0.den01.atlas.cogentco.com (38.112.6.145) 0.958 ms
0.988 ms 0.593 ms
3 g0-3.core01.den01.atlas.cogentco.com (66.250.10.217) 1.063 ms 0.838 ms
1.252 ms
4 * * *
5 * * *

But through level3:

[root at smtp1 root]# traceroute corp-mail.uniserve.com
traceroute to corp-mail.uniserve.com (216.113.192.13), 30 hops max, 38 byte
packets
1 ai-hub02.axint.net (208.69.72.254) 0.946 ms 0.461 ms 0.404 ms
2 165.236.64.109 (165.236.64.109) 0.615 ms 0.585 ms 0.598 ms
3 170.147.161.93 (170.147.161.93) 0.801 ms 0.916 ms 0.877 ms
4 ge-6-1.car2.Denver1.Level3.net (64.156.40.205) 0.861 ms 0.877 ms 0.805 ms
5 ae-31-55.ebr1.Denver1.Level3.net (4.68.107.158) 1.189 ms
ae-32-54.ebr2.Denver1.Level3.net (4.68.107.126) 1.058 ms
ae-31-55.ebr1.Denver1.Level3.net (4.68.107.158) 11.590 ms
6 ae-1-100.ebr2.Denver1.Level3.net (4.69.132.38) 123.141 ms 13.880 ms
1.268 ms
7 ae-24-54.car4.Seattle1.Level3.net (4.68.105.101) 27.086 ms
ae-2.ebr2.Seattle1.Level3.net (4.69.132.53) 34.546 ms 28.341 ms
8 ae-24-54.car4.Seattle1.Level3.net (4.68.105.101) 27.311 ms 4.79.110.10
(4.79.110.10) 62.713 ms ae-24-52.car4.Seattle1.Level3.net (4.68.105.37)
27.236 ms
9 4.79.106.2 (4.79.106.2) 270.371 ms rc1bb-pos11-0-0.vc.shawcable.net
(66.163.76.125) 61.771 ms unknown.Level3.net (63.211.200.30) 63.277 ms
10 rc1bb-pos11-0-0.vc.shawcable.net (66.163.76.125) 61.887 ms 62.256 ms
61.932 ms
11 ra1wh-ge3-1.vc.shawcable.net (66.163.69.42) 61.553 ms
rx0wh-uniserve.vc.bigpipeinc.com (64.251.81.18) 36.660 ms
ra1wh-ge3-1.vc.shawcable.net (66.163.69.42) 61.754 ms
12 rx0wh-uniserve.vc.bigpipeinc.com (64.251.81.18) 37.116 ms 36.919 ms
36.673 ms
13 mx.uniserve.ca (216.113.192.13) 36.652 ms !H 36.782 ms !H 37.940 ms !H


Trouble ticket open with Cogent....


Chris Stone, MCSE
AxisInternet, Inc.