Cogent peering issues with Sprint

Wed Oct 10 15:00:13 UTC 2007

On Oct 10, 2007, at 10:38 AM, CARL.P.HIRSCH at sargentlundy.com 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