Re: [tlug] Network issues Japan -> USA?

["Ian Barwick" <barwick@example.com>]

2008/12/10 Stephen J. Turnbull <stephen@example.com>
>
> Ian Barwick writes:
>
>  > The odd thing is, downloading *from* the US seems to be working fine, which
>  > would presumably rule out some sort of Windows update-induced mass
>  > congestion. It's uploading *to* the US which is incredibly slow.
>
> Think about it.  This is going to be asymmetric.  The packet flood is
> going to confuse the receiving computer, but once it gets a packet
> telling it "send out lots of data", as long as the protocol is
> pipelined, sending data doesn't need to be slowed up as much.
>
> At least, that's what I concluded when our LAN was "only" 100Mbit, and
> Windows Update was making even mail fail with TCP timeouts.

OK, I think we can absolve Windows from this particular problem ;)

The network people at the US hoster say the problem is with the ISP's
upstream provider, which is Asia Netcom (aka Pacnet), more
specifically a block of IPs described as "Asia Netcom NRT HUB"
(203.192.149.0 - 203.192.149.255) where packets are getting dropped.
I've tried contacting our ISP (AsahiNet) in the hope they will pass
the message on to someone who knows about these things (rather than
asking me to reboot my PC).

Does anyone have any experience in contacting  Asia Netcom directly
(or getting the ISP to deal with this kind of issue)? According to
their website ( http://asianetcom.net/ ) they have a presence in Japan
but I can't see any contact info beyond sales and marketing.


Regards

Ian Barwick