Re: Cogent latency / congestion

[David Ulevitch <davidu () everydns net>]

Yes, their status page is not accurate.  We're seeing traffic hitting 
the bitbucket at various locations on their network including Dallas 
(IAH) and Ashburn (IAD).  It's be nice if they pulled their routes for 
this stuff.

For example:

traceroute to grouse.dabbledb.com (64.15.129.72), 64 hops max, 40 byte 
packets
 1  38.99.21.1 (38.99.21.1)  2.012 ms  1.122 ms  0.468 ms
 2  g0-10.na21.b003104-1.sfo01.atlas.cogentco.com (38.104.128.129) 
1.229 ms  2.223 ms  0.975 ms
 3  g1-7.111.core01.sfo01.atlas.cogentco.com (38.112.39.45)  1.758 ms 
1.153 ms  2.523 ms
 4  p4-0.core01.sjc01.atlas.cogentco.com (66.28.4.94)  2.010 ms  2.290 
ms  3.886 ms
 5  p14-0.core01.iah01.atlas.cogentco.com (66.28.4.237)  47.753 ms 
46.791 ms  47.996 ms
 6  * * *
 7  * * *
 8  * * *
 9  *^C

-david

Mike Tancsa wrote:
> Does anyone have any details about the Cogent outage that started this 
> morning (9am GMT-400) and is still continuing ?   If its a fibre cut 
> between Montville (NJ?) and Cleveland OH (http://status.cogentco.com/) 
> why is it so bad in Chicago and Albany locations ?  Is there really that 
> little excess capacity ?
>
> My connection out of Toronto is pretty bad via Albany
>
>  3  g8-22.mpd01.yyz02.atlas.cogentco.com (38.104.158.77)  7.470 ms  
> 6.754 ms  6.481 ms
>  4  v3493.mpd01.yyz01.atlas.cogentco.com (154.54.5.85)  6.981 ms  6.730 
> ms  6.984 ms
>  5  g2-0-0-3490.core01.yyz01.atlas.cogentco.com (154.54.5.73)  6.482 ms  
> 7.175 ms  5.974 ms
>  6  p4-0.core01.alb02.atlas.cogentco.com (66.28.4.217)  105.954 ms  
> 112.055 ms  111.426 ms
>  7  p6-0.core01.bos01.atlas.cogentco.com (154.54.7.42)  115.413 ms  
> 117.090 ms  113.816 ms
>
> and Bell's through Chicago is even worse
>
> 6  64.230.229.5 (64.230.229.5)  12.572 ms  36.983 ms  200.187 ms
>  7  64.230.242.97 (64.230.242.97)  4.685 ms  5.439 ms  3.645 ms
>  8  64.230.147.14 (64.230.147.14)  14.351 ms  15.344 ms  14.387 ms
>  9  206.108.103.142 (206.108.103.142)  14.374 ms  14.280 ms  14.255 ms
> 10  p13-0.core01.ord01.atlas.cogentco.com (154.54.11.29)  156.616 ms *  
> 142.150 ms
> 11  te3-1.mpd01.ord01.atlas.cogentco.com (154.54.1.206)  135.199 ms  
> 138.900 ms *
> 12  t2-4.mpd01.mci01.atlas.cogentco.com (154.54.2.233)  152.292 ms  
> 149.956 ms  148.095 ms
> 13  t4-2.mpd01.iah01.atlas.cogentco.com (154.54.5.221)  149.047 ms  
> 150.556 ms  151.232 ms
>
>         ---Mike
>
>
> --------------------------------------------------------------------
> 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