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Re: Cogent peering issues with Sprint

  • From: Marshall Eubanks
  • Date: Wed Oct 10 11:10:02 2007


On Oct 10, 2007, at 10:38 AM, [email protected] wrote:

Cogent is experiencing two problems right now. Their automated message reports that they have a backbone problem causing latency, but they also seem to be experiencing peering problems with Sprint.



Are you sure that this is not in Sprint, or even Duke Energy ?

I can't ping to 192.234.122.137 from either home or work, and I don't see any signs of Cogent problems
from Tyco Road / Tysons Corner.

Regards
Marshall

From Cogent in Tysons Corner, Virginia :

Type escape sequence to abort.
Tracing the route to www.duke-energy.com (192.234.122.137)

1 g0-7.na21.b002176-1.dca01.atlas.cogentco.com (38.99.206.153) 0 msec 0 msec 0 msec
2 g2-1-3587.core01.dca01.atlas.cogentco.com (38.20.32.13) [AS 174] 4 msec 0 msec 4 msec
3 t3-1.ccr02.dca01.atlas.cogentco.com (154.54.3.158) [AS 174] 0 msec 0 msec 0 msec
4 t4-1.mpd01.dca02.atlas.cogentco.com (154.54.2.182) [AS 174] 4 msec 0 msec 4 msec
5 t2-2.mpd01.iad01.atlas.cogentco.com (154.54.1.78) [AS 174] 0 msec 4 msec 0 msec
6 g14-0-0.core01.iad01.atlas.cogentco.com (154.54.5.57) [AS 174] 4 msec 0 msec 4 msec
7 sprint.iad01.atlas.cogentco.com (154.54.13.62) [AS 174] 0 msec 0 msec 4 msec
8 sl-bb20-dc-8-0-0.sprintlink.net (144.232.9.120) [AS 1239] 0 msec 4 msec 4 msec
9 sl-gw21-dc-14-0.sprintlink.net (144.232.15.7) [AS 1239] 0 msec 0 msec 0 msec
10 sl-dukenergy-57200-0.sprintlink.net (144.228.23.170) [AS 1239] 12 msec 8 msec 12 msec
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *

From Cox Cable in Clifton, Virginia

[TME-Laptop-2:~] tme% traceroute www.duke-energy.com
traceroute to www.duke-energy.com (192.234.122.137), 64 hops max, 40 byte packets
1 * * *
2 ip70-179-104-1.dc.dc.cox.net (70.179.104.1) 12.776 ms 11.714 ms 11.778 ms
3 ip72-196-255-137.dc.dc.cox.net (72.196.255.137) 12.472 ms 10.686 ms 11.940 ms
4 mrfddsrj01-ge110.rd.dc.cox.net (68.100.0.161) 13.513 ms 13.235 ms 11.577 ms
5 xe-9-2-0.edge1.washington1.level3.net (4.79.228.61) 12.426 ms 12.197 ms 11.816 ms
6 ae-24-79.car4.washington1.level3.net (4.68.17.70) 13.260 ms ae-34-89.car4.washington1.level3.net (4.68.17.134) 12.958 ms ae-24-79.car4.washington1.level3.net (4.68.17.70) 13.032 ms
7 sprint-level3-te.washington1.level3.net (4.68.111.170) 14.570 ms 12.670 ms 13.926 ms
8 sl-bb20-dc-8-0-0.sprintlink.net (144.232.9.120) 16.061 ms 13.807 ms 13.416 ms
9 sl-gw21-dc-14-0.sprintlink.net (144.232.15.7) 14.193 ms 15.085 ms 13.761 ms
10 sl-dukenergy-57200-0.sprintlink.net (144.228.23.170) 25.361 ms 22.298 ms 22.464 ms
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *




Output over Cogent:
sarglund-cogent>traceroute www.duke-energy.com
Translating "www.duke-energy.com"...domain server (66.28.0.45) [OK]

Type escape sequence to abort.
Tracing the route to www.duke-energy.com (192.234.122.137)

1 g0-2.na01.b000629-0.ord01.atlas.cogentco.com (38.112.0.193) [AS 174] 0 msec 0 msec 0 msec
2 g1-0.core01.ord01.atlas.cogentco.com (66.28.6.73) [AS 174] 0 msec 0 msec 0 msec
3 t4-1.mpd01.ord01.atlas.cogentco.com (154.54.1.98) [AS 174] 4 msec 0 msec 0 msec
4 v3488.mpd01.ord03.atlas.cogentco.com (154.54.5.26) [AS 174] 0 msec 0 msec 0msec
5 g6-0-0-3492.core01.ord03.atlas.cogentco.com (154.54.3.241) [AS 174] 0 msec 0 msec 0 msec
6 sprint.ord03.atlas.cogentco.com (154.54.13.46) [AS 174] 0 msec 4 msec 0 msec
7 sl-bb20-chi-4-0.sprintlink.net (144.232.8.218) [AS 174] 0 msec 0 msec 0 msec
8 sl-bb21-chi-15-0.sprintlink.net (144.232.26.2) [AS 174] 4 msec 4 msec 0 msec
9 sl-bb25-chi-13-0.sprintlink.net (144.232.26.90) [AS 174] 0 msec 0 msec 0 msec
10 * * *
11 * * *
12 * * *
13 * * *
14 * *
sarglund-cogent>

vs.

Output over Verizon:
sarglund-gw>traceroute www.duke-energy.com
Translating "www.duke-energy.com"...domain server (198.6.1.2) [OK]

Type escape sequence to abort.
Tracing the route to www.duke-energy.com (192.234.122.137)

1 500.Serial4-10.GW1.CHI2.ALTER.NET (157.130.165.213) [AS 701] 8 msec 0 msec 4msec
2 0.so-0-0-0.XT1.CHI2.ALTER.NET (152.63.64.130) [AS 701] 4 msec 0 msec 0 msec
3 0.so-7-0-0.XL1.CHI13.ALTER.NET (152.63.64.206) [AS 701] 4 msec 16 msec 4 msec
4 0.so-6-0-0.BR2.CHI13.ALTER.NET (152.63.73.25) [AS 701] 4 msec 0 msec 44 msec
5 sl-st21-chi-3-0-0.sprintlink.net (144.232.18.141) [AS 701] 32 msec 12 msec 12 msec
6 sl-crs2-chi-0-1-0-0.sprintlink.net (144.232.18.154) [AS 701] 8 msec 16 msec 20 msec
7 sl-bb25-chi-8-0.sprintlink.net (144.232.26.113) [AS 701] 12 msec 28 msec 12 msec
8 sl-bb26-rly-10-0.sprintlink.net (144.232.20.88) [AS 701] 116 msec 216 msec *
9 sl-bb21-dc-12-0-0.sprintlink.net (144.232.9.212) [AS 701] 24 msec 32 msec 36 msec
10 sl-gw21-dc-15-0.sprintlink.net (144.232.15.9) [AS 701] 32 msec 28 msec 24 msec
11 sl-dukenergy-57200-0.sprintlink.net (144.228.23.170) [AS 701] 40 msec 36 msec 40 msec
sarglund-gw>


enjoy,
-carl