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Re: Need help from UUNet's routing specialist!

  • From: Erik-Jan Bos
  • Date: Thu Dec 09 12:17:51 1999

Dmitry,

> We (as8470) are Teleglobe customer. And we experience terrible
> delays on Teleglobe to UUNet interconnect points. Teleglobe's customer
> support engineers insist, that the problem caused by UUNet's routes
> prioritization.
> But I belive that this assymetric routing initiated by Teleglobe, not
> UUNet. 

We are a TGO customer as well and we do not see the problem. Here's a
traceroute:

surgeon bos % date
Thu Dec  9 18:10:43 CET 1999

surgeon bos % traceroute www.uu.net
traceroute to www.uu.net (208.243.117.123): 1-30 hops, 38 byte packets
 1  surroute.surfnet.nl (192.87.109.1)  0.554 ms  0.441 ms  0.399 ms
 2  AR1.Utrecht.surf.net (145.41.49.161)  101 ms  2.28 ms  1.82 ms
 3  AR2.Utrecht.surf.net (145.41.7.181)  1.48 ms  2.14 ms  1.51 ms
 4  BR7.Amsterdam.surf.net (145.41.7.125)  2.87 ms  2.70 ms  2.49 ms
 5  BR2.Amsterdam.surf.net (145.41.7.146)  2.91 ms  2.71 ms  2.75 ms
 6  BR2.NewYork.surf.net (145.41.7.110)  79.5 ms  79.9 ms  80.0 ms
 7  if-6-3.core1.NewYork.Teleglobe.net (207.45.196.129)  79.8 ms  79.8 ms 79.7 ms
 8  if-0-3.core2.nqt.Teleglobe.net (207.45.223.178)  80.0 ms  80.1 ms 80.6 ms
 9  if-1-0.core1.Washington.Teleglobe.net (207.45.223.170)  84.6 ms  84.7 ms  84.8 ms
10  if-10-0-0.bb1.Washington.Teleglobe.net (207.45.221.195)  85.3 ms 85.6 ms  84.8 ms
11  Serial3-1-1.GW1.DCA3.ALTER.NET (157.130.39.89)  86.7 ms  87.2 ms 87.0 ms
12  110.ATM3-0.XR1.DCA1.ALTER.NET (146.188.161.54)  86.3 ms  86.0 ms  85.7 ms 
13  195.ATM8-0-0.GW1.DCA1.ALTER.NET (146.188.161.17)  87.2 ms  88.0 ms 86.6 ms
14  260.GW1.TCO3.customer.ALTER.NET (157.130.33.222)  220 ms  112 ms  136 ms
15  prod-334a.tco3.web.uu.net (208.243.113.236)  92.7 ms  *  88.3 ms

Perhaps this is fixed?

> Could you please send me 'sh ip bgp 195.128.65.33' performed at
> Serial3-1-1.GW1.DCA3.ALTER.NET (157.130.39.89). 
> 
> I am expecting to see communities or MEDs set at TG router that lowres
> route priority and makes traffic to go back via _Seattle_Denver_Chicago_NY_.
> Any help is _greatly_ appreciated!
> 
> ---------------------
> Example of delays:
> ---------------------
> nyy-1#trace        
> Protocol [ip]:      
> Target IP address: www.uu.net   
> Translating "www.uu.net"...domain server (195.128.64.3) [OK]
> 
> Source address: 195.128.65.33 
> Loose, Strict, Record, Timestamp, Verbose[none]: 
> Type escape sequence to abort.
> Tracing the route to www.uu.net (208.243.117.123)
> 
> 1 if-0-1-0.bb6.NewYork.Teleglobe.net (207.45.205.13) [AS 6453] 0 msec 0 msec
 0 msec
> 2 if-3-0.core2.nqt.Teleglobe.net (207.45.221.98) [AS 6453] 4 msec 0 msec 0 m
sec
> 3 if-1-0.core1.Washington.Teleglobe.net (207.45.223.170) [AS 6453] 8 msec 4 
msec 8 msec
> 4 if-2-0-0.bb1.Washington.Teleglobe.net (207.45.221.228) [AS 6453] 8 msec 4 
msec 8 msec
> 5 Serial3-1-1.GW1.DCA3.ALTER.NET (157.130.39.89) [AS 701] 1356 msec 1152 mse
c 1180 msec
>                                                     ^^^^^^^^^^^^^^^^^^
>                                                          !!!!!!!!!!!
> 
> 6 110.ATM3-0.XR1.DCA1.ALTER.NET (146.188.161.54) [AS 701] 1048 msec 1144 mse
c 1136 msec
> 7 195.ATM8-0-0.GW1.DCA1.ALTER.NET (146.188.161.17) [AS 701] 1172 msec 1036 m
sec 1244 msec
> 8 260.GW1.TCO3.customer.ALTER.NET (157.130.33.222) [AS 701] 876 msec 788 mse
c 812 msec
> 9 prod-334a.tco3.web.uu.net (208.243.113.236) [AS 11486] 1112 msec
> [cut]
> 
> 
> 
> Serial3-1-1.GW1.DCA3.ALTER.NET (157.130.39.89)

__
 
Erik-Jan Bos
Manager Network Services SURFnet
The Netherlands, Europe





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