mailing list archives
Re: Comcast's 6to4 Relays
From: Owen DeLong <owen () delong com>
Date: Wed, 20 Apr 2011 08:47:00 -0400
The better solution to that problem is to get additional 6to4 relays deployed closer to India. Perhaps encouraging Tata
to take some leadership in that area, for example.
I do not believe that the opening of the Comcast relays will harm BGP best path selection for the 6to4 prefix except in
rather broken and/or pathological cases of BGP best path selection. Those cases should be relatively easy to identify
and correct locally without preventing Comcast from significantly improving the 6to4 situation for the areas they serve
by opening their relays.
I applaud John for his leadership in this area and I think the IPv6 work being done by Comcast sets a good example for
the community. As a Comcast customer, praising Comcast does not come easy to me, but, in this area, they are doing
excellent things and should be commended.
Sent from my iPad
On Apr 19, 2011, at 10:26 PM, Bhoomi Jain <bhoomij () india com> wrote:
I thank you for asking the advice of the community.
As our colleagues suggest, having 6to4 relays inside the network helps to reduce the latency. Opening up your
generous services to a larger Internet community by advertising the 18.104.22.168/24 BGP prefix outside the network
could have extreme and unintended consequences.
To give you an idea, a lot of the Internet in India depends on the service of the Tata companies, with international
routing coming from Tata Communications AS 6453. Announcing 22.214.171.124/24 to 6453 as a customer, I would worry
about its treatment as BGP best-path, in place of closer 6to4 relays. As you understand, these circuits are very far
away, and also very full. This is not something I would recommend.
At 19 Apr 2011 22:51:24 +0200 (CEST) from "Brzozowski, John" <John_Brzozowski () Cable Comcast com>:
Since deploying our 6to4 relays, Comcast has observed a substantial
reduction in the latency associated with the use of 6to4. As such we are
contemplating further opening our relays for use by others. The
availability of our 6to4 relays should improve the experience of others
using 6to4 as a means to access content and services over IPv6.
We have been open about our IPv6 activities and wanted to follow suit by
reaching out to the community and soliciting feedback before moving
forward. As always we wish to continue to advocate and support the
universal deployment of IPv6.
Please send any comments or questions to the list or if you wish to me
John Jason Brzozowski
e) mailto:john_brzozowski () [cable comcast com]
Re: Comcast's 6to4 Relays Martin Millnert (Apr 20)
RE: Comcast's 6to4 Relays Bhoomi Jain (Apr 20)