Fwd: [44Net] gateway updates - HIGHSPEED HAMNET

Bill V WA7NWP wa7nwp at gmail.com
Tue Mar 23 14:48:56 PDT 2010


Interesting notes...

I found this for the Highspeed Hamnet...   I'm not sure what it says
but from all the acronyms I think I like it.

  http://www.db0res.de/faq.html

Bill, WA7NWP



---------- Forwarded message ----------
From: Jann Traschewski
Date: Tue, Mar 23, 2010 at 2:08 PM
Subject: Re: [44Net] gateway updates
To: 44Net at cows.net


Brian wrote:

>> What would "Proxy BGP" do ?
>
> Consider AMPRGW as a "route reflector", but more.  Consolidate all
> the various bits of AMPRNet routing information then announce those
> consolidated routes to the larger internet so that the equivalent of
> CIDR routing could be taking place without having dozens of individual
> subnets announcing their own connectivity in an uncontrollable manner.
>
> I'd like to be able to announce that an ampr subnet is reachable via a
> specific gateway but also via the central gw (at a lower preference).

I'm not into the ISP business. My friend owns 212.125.96.0/19 on AS13132.
Would your desired announcements e.g. look like this:

AS 7377:
44.0.0.0/8 BGP-Next-Hop: <IP of your core router @AS7377>
44.130.253.0/24 BGP-Next-Hop: <IP of my friends core router @AS13132> ??

We could give it a try and have a look what will happen as a first step.
Could this work?

> There are complications here in that route selection is often based on
> traversing a chain of Autonomous Systems, and this doesn't quite work
> right when the chains to be evaluated have multiple instances of the
> same AS.  It looks like a loop or worse.

Hm, I didn't get this :/

> We really can't expect every AMPR gw to get its own AS.  Nor can we
> expect to have any sort of influence over each ISP's announcements of
> routes to pieces of the amprnet via their own AS.

True. We need another way.

> I don't know how to do what we want to do.
>
> Perhaps there is something we could use in extended communities (RFC4360)?

>
> Anyone got any ideas on how to do what we want without having to
> re-engineer the entire internet or require unobtainable control/access
> from network providers?

Currently there is much activity in europe in building the highspeed HAMNET
on RF using BGP4. I already connected it to the AMPRNet, but it should be
more decentralized in the future. I'd like to spread my route informations
in realtime to the other gateways. I didn't have the time to look at
OpenNHRP, yet. Hopefully we will find a way without the need of much
administration.

73,
Jann


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