[OCCAID] IPv4 Routing question from me to IAD

[James Jun]

as far as I can tell, it's AT&T sending suboptimal MEDs (happens very often
between ATT<->Cogent,
ATT<->just_about_anyone_who_thinks_cold_potato_actually_works)

 

In English, it's not something we can fix, something you'll have to bring up
to Comcast or their upstream to resolve.

 

james

 

traceroute to 24.125.204.61 (24.125.204.61), 30 hops max, 40 byte packets

 1  fe3-15.hr2.iad1.us.nlayer.net (69.31.31.37)  0.511 ms  1.093 ms  0.410
ms

 2  g1-26.ar1.iad1.us.nlayer.net (69.31.31.197)  0.379 ms  0.271 ms  0.256
ms

 3  ge-7-0-0.ar1.DCA3.gblx.net (208.51.117.125)  0.929 ms  0.402 ms  0.620
ms

 4  pos7-0-0-10G.ar2.CHI2.gblx.net (67.17.105.110)  32.673 ms  32.609 ms
33.002 ms

 5  gblx-gw.cgcil.ip.att.net (192.205.32.125)  45.294 ms  33.296 ms  33.412
ms

 6  tbr2-p012201.cgcil.ip.att.net (12.123.6.38)  28.475 ms  28.228 ms
28.628 ms

     MPLS Label=32144 CoS=0 TTL=1 S=1

 7  tbr2-cl3641.phlpa.ip.att.net (12.122.10.94)  28.291 ms  28.303 ms
28.642 ms

     MPLS Label=31392 CoS=0 TTL=1 S=1

 8  tbr1-cl9.wswdc.ip.att.net (12.122.2.85)  28.989 ms  29.309 ms  29.354 ms

     MPLS Label=32381 CoS=0 TTL=1 S=1

 9  12.123.8.25 (12.123.8.25)  28.189 ms  28.016 ms  28.014 ms

10  12.118.122.14 (12.118.122.14)  30.256 ms  30.237 ms  30.254 ms

11  te-9-1-ur02.staplesmllrd.va.richmond.comcast.net (68.86.172.93)  31.346
ms  30.700 ms  30.172 ms

12  ge-0-2-ubr01.staplesmllrd.va.richmond.comcast.net (68.86.175.110)
30.432 ms  30.162 ms  30.515 ms

13  *^C

 

 

  _____  

From: occaid-bounces at cnacs.occaid.org
[mailto:occaid-bounces at cnacs.occaid.org] On Behalf Of Lists
Sent: Sunday, July 30, 2006 11:13 AM
To: occaid
Subject: RE: [OCCAID] IPv4 Routing question from me to IAD

 

Oops.. Meant to include my tracert

 

 

 

Tracing route to occaid.g1-36.ar1.iad1.us.nlayer.net [69.31.31.102] over a
maximum of 30 hops:

 

 

 

1     2 ms    <1 ms     1 ms  linksys.ropeguru.int [192.168.1.1]

2     9 ms     8 ms     7 ms
c-3-0-ubr01.staplesmllrd.va.richmond.comcast.net [73.141.96.1]

3     9 ms     7 ms     *
GE-6-24-ur02.staplesmllrd.va.richmond.comcast.net [68.86.175.109]

4     9 ms     9 ms     9 ms
te-1-3-ar01.staplesmllrd.va.richmond.comcast.net [68.86.172.94]

5    12 ms    11 ms    11 ms  12.118.122.13

6    19 ms    12 ms    16 ms  tbr1-p010401.wswdc.ip.att.net [12.123.8.26]

7    11 ms     9 ms    11 ms  sar1-a300s3.wswdc.ip.att.net [12.123.8.105]

8    38 ms    39 ms    37 ms  att-gw.washdc.gblx.net [192.205.32.42]

9    39 ms    37 ms    37 ms  nlayer.ge-7-0-0.ar1.DCA3.gblx.net
[208.51.117.126]

10    40 ms    39 ms    39 ms  occaid.g1-36.ar1.iad1.us.nlayer.net
[69.31.31.102]

 

 

Trace complete.

 

 

  _____  

From: Lists 
Sent: Sunday, July 30, 2006 9:10 AM
To: occaid
Subject: [OCCAID] IPv4 Routing question from me to IAD

 

Good morning all,

 

  Been quite a while since I have posted here as my Linksys router died and
I am just getting back up and online with my tunnel. Very happy that it is
even still up and running.

 

  My question. When I originally had my tunnel changed from EWR to IAD I was
seen a solid 9ms ping time. Now that I have had the opportunity to set
everything back up again, I am seeing 39ms to IAD from the same IP with
Comcast I have always had. Seems there has been a routing change and I hop
off AT&T to GLBX for two hops before hitting nlayer. The hop off AT&T to
GLBX takes a 21ms jump which is what seems to be the additional latency. I
know that neither of these belong to Towardex, but could there be some sort
of route table issue?

 

I know 39ms really isn't that bad, but was just really surprised at the
increase.

 

Thanks,

Robert Webb

 

PS - What are the contact emails now for end point changes and dns changes?

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