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wumarkus
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Unoptimised, high latency routing to US

Hello, I'm a new subscriber that routinely accesses websites in the US. I've noticed that the majority of my traffic take some bizzare routes resulting in latency several times higher than it should be:

Here is an example traceroute to a Comcast IP in the Washington, DC area - it appears to route through Austria, then Chicago, then maybe to Oslo?, then back to Illinois, before it peers to the ISP - I've seen similar results with two other US ISPs (Cox and Verizon). Are there network engineers at Virgin available to discuss these issues?

5 15 ms 16 ms 32 ms brnt-ic-1-ae0-0.network.virginmedia.net [62.254.42.198]
6 18 ms 25 ms 14 ms m686-mp2.cvx1-b.lis.dial.ntli.net [62.254.42.174]
7 * * * Request timed out.
8 87 ms 85 ms 82 ms 84.116.140.174
9 220 ms 202 ms 202 ms us-chi01a-ri3-xe-0-1-2-0.aorta.net [84.116.137.198]
10 140 ms 128 ms 186 ms no-osl01a-ra2-ge-2-1-0-0.aorta.net [213.46.191.26]
11 126 ms 174 ms 203 ms hu-1-3-0-9-cr02.350ecermak.il.ibone.comcast.net [68.86.88.133]
12 416 ms 109 ms 105 ms be-10305-cr02.newyork.ny.ibone.comcast.net [68.86.85.201]
13 110 ms 212 ms 306 ms et-15-1-0-0-ar01.whitemarsh.md.bad.comcast.net [68.86.94.102]
14 182 ms 213 ms 140 ms ae-0-0-ar01.manassascc.va.bad.comcast.net [68.85.61.146]

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Re: Unoptimised, high latency routing to US

Hi wumarkus, 

 

Welcome to the forums, I am sorry to see you have had trouble with latency. 

 

As a general rule once it is off our network there isn't much we can really look at. So it is unlikely to be an issue from our side. Do you find the routing is different with the hub in modem only mode from when you have the router enabled on the hub? 

 

Let us know how you get on. 

 

Emma


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wumarkus
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Re: Unoptimised, high latency routing to US

No, the routing is not affected by the modem. It has to do with the routing of Virgin Media's parent company, Liberty Global. I've emailed their NOC to see if they see something wrong on their end.

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