Re: Comcast enables 6to4 relays

[John Jason Brzozowski <john_brzozowski () cable comcast com>]

Hey Bill,

No plans for Teredo at this time.

John


On 8/30/10 5:57 PM, "Bill Fehring" <lists () billfehring com> wrote:

> On Sat, Aug 28, 2010 at 10:49, John Jason Brzozowski
> <john_brzozowski () cable comcast com> wrote:
>
> > As we started our IPv6 trials, we began to observe an increase in 6to4 relay
> > traffic. 6to4 is a transition mechanism built into some operating systems
> > and home gateways. While it is not a transition technology that Comcast
> > planned to invest in due to limitations related to performance, we did
> > observe poor performance when 6to4 was used by our customers. In many cases,
> > these customers were not even aware that 6to4 was enabled by default or that
> > their device or operating system was attempting to use 6to4 to communicate
> > with IPv6 resources on the Internet.
> >
> > In most cases, we observed that 6to4-enabled operating systems and devices
> > were attempting to use a 6to4 relay infrastructure hosted by a midwestern
> > university. In order to improve the Internet experience for Comcast
> > customers who are using 6to4, whether knowingly or not, we have decided to
> > operate 6to4 relays on a temporary, trial basis.
> >
> > Comcast has decided to deploy 6to4 relays in five locations around our
> > network to improve performance and predictability, as compared to operating
> > relays from a single location. These 6to4 relays are available via the
> > standard 6to4 Anycast IP address, according to RFC 3068, which is
> > 192.88.99.1. Devices attempting to use 6to4 within our network should
> > automatically discover and utilize these new 6to4 relays, without end user
> > intervention or configuration.
> >
> > The first pair of these relays was activated today. We plan to activate the
> > remaining three within the next seven to ten days. We plan to monitor the
> > performance of the 6to4 relays, to measure any beneficial effects resulting
> > from adding these elements to our network. As our IPv6 trials evolve and we
> > develop our plans for 2011 and beyond, we will assess our plans to support
> > 6to4 moving forward.
>
>
> Hi John,
>
> First of all, that's great news -- I think it will help a lot.
>
> Have you also considered deploying Teredo relays? I'm guessing that
> there are quite a few Windows Vista+ systems that could benefit from
> having a few closer Teredo relays and it's probably a similar amount
> of traffic that you're seeing compared to 6to4 tunnels.
>
> Best,
>
> Bill Fehring

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John Jason Brzozowski
Comcast Cable
e) mailto:john_brzozowski () cable comcast com
o) 609-377-6594
m) 484-962-0060
w) http://www.comcast6.net
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