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Standard User mixt
(experienced) Sat 01-Jan-11 20:00:02
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Asymmetric Routing to Hurricane Electric London IPv6 Router


[link to this post]
 
This isn't an exceptionally important issue, but I was wondering how one goes about contacting someone in Virgin's networking team in an attempt to resolve a routing inefficiency that they currently seem to have with one of Hurricane Electric's IPv6 tunnel broker routers?

The IP in question is 216.66.80.26

From a dedicated server in Reading, this router has a ping round trip time of 2ms (blindingly fast), which one would expect, as it is a UK based IP address.

However, same ping from our Virgin cable connection shows 90ms round trip time. I contacted HE and a very helpful chap confirmed that for some bizarre reason, Virgin's network insists on routing traffic to this address off to New York. HE's router replies directly, which explains why this round trip time is slightly faster than typical times to hosts on the east side of the US - basically, the traffic is currently asymmetrically routed, with one direction going half way around the planet.

I've confirmed this asymmetry with Linux tracepath:

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$ tracepath 216.66.80.26
 1:  me.cable.virginmedia.com (x.x.x.x)   0.242ms pmtu 1500 1:  10.240.72.1 (10.240.72.1)                              7.838ms
 2:  bmly-core-1a-ae1-1167.network.virginmedia.net (81.100.0.85) asymm  3   7.396ms 3:  popl-bb-1a-as6-0.network.virginmedia.net (212.43.162.57) asymm  4   7.965ms
 4:  popl-bb-1b-ae0-0.network.virginmedia.net (213.105.174.230) asymm  5   7.265ms 5:  popl-tmr-2-ae5-0.network.virginmedia.net (213.105.159.6) asymm  6   8.322ms
 6:  tele-ic-2-as0-0.network.virginmedia.net (62.253.184.6) asymm  7   8.826ms 7:  10gigabitethernet2-2.core1.ash1.he.net (206.223.115.37)  88.022ms
 8:  10gigabitethernet1-2.core1.nyc4.he.net (72.52.92.85) 101.931ms 9:  10gigabitethernet1-2.core1.lon1.he.net (72.52.92.78) asymm  7  91.040ms
10:  tserv5.lon1.ipv6.he.net (216.66.80.26)               asymm  7  87.871ms reached     Resume: pmtu 1500 hops 10 back 7


Unfortunately, I'm not a direct customer of Virgin (the connection is supplied by my landlord). So talking to them about this is out the question. I notice on the TBB site, there is no contact email address for their support department either.

Is there anything I can do to raise this mildly annoying issue with them?

Oh and before I forget, a happy new year to you all! smile

Now on Virgin Media (50Mb/Cable)
Was with Be* Un Limited and before that ZeN
Is Linux routing your internet connection?
Need to make BIND geo-aware?

Edited by mixt (Sat 01-Jan-11 20:40:15)

Standard User uno
(fountain of knowledge) Sat 01-Jan-11 21:19:55
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Re: Asymmetric Routing to Hurricane Electric London IPv6 Rou


[re: mixt] [link to this post]
 
Public listing on PeeringDB shows:

Contact Information
Role Contact Name Telephone E-Mail
Policy General Mailbox peering[at]virginmedia.co.uk
Technical General mailbox nmc[at]virginmedia.co.uk

Edit: their public RIPE lookup also shows: pim[at]virginmedia.co.uk

Matt

-
uno Broadband
t: 0808 221 8642
Official Maidenhead, Milton Keynes & Manchester Speedtest.net Host

Edited by uno (Sat 01-Jan-11 21:20:40)

Standard User mixt
(experienced) Sat 01-Jan-11 21:54:07
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Re: Asymmetric Routing to Hurricane Electric London IPv6 Rou


[re: uno] [link to this post]
 
Thanks Matt, have dropped them an email - will wait and see what happens!

Now on Virgin Media (50Mb/Cable)
Was with Be* Un Limited and before that ZeN
Is Linux routing your internet connection?
Need to make BIND geo-aware?


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