[LARTC] routing strategies for 2 adsl setup

[LARTC] routing strategies for 2 adsl setup

[christopher cuse]

hi all,

i have been able to find only a trickle of information concerning
possible strategies for a 2 adsl setup using two different isp's.

has anyone had experience in the usa or elsewhere working with their
providers to carry bgp tables, or would you recommend/implement a
round-robin arrangement?

how ? :-)


yours sincerely

christopher cuse, rhce/ccna
ccuse@tiscali.fr
redhat 8.0



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Re: [LARTC] routing strategies for 2 adsl setup

[William L. Thomson Jr.]

Christopher,

On Tue, 2003-04-08 at 03:41, christopher cuse wrote:
> hi all,
> 
> i have been able to find only a trickle of information concerning
> possible strategies for a 2 adsl setup using two different isp's.

There should be a fair amount. Did you look in the archives and etc.

> has anyone had experience in the usa or elsewhere working with their
> providers to carry bgp tables, or would you recommend/implement a
> round-robin arrangement?

I do not think bgp applies in this scenario. By nature if you have ADSL
lines you are going for low cost, high speed bandwidth. I am not aware
of ISP providing bgp service to ADSL customers. I would assume you use
to be in a large scale network, and bgp would be running internally and
not communicating with the ISP.

Round robin on the other hand really addresses a different issue.

Bottom line I know what you are trying to do but I believe you are over
complicating the scenario. I have been there, I looked into bgp, and in
a way I guess I used round robin.

In brief forget about bgp at least for now. Look into setting up a
multipath route to your various isp's. You will need to compile a custom
kernel, that has certain patches applied. You will build your routes,
and that will give you what you are in search of from the inside out.
Now from the outside in you will need DNS to do round robin, load
balance, or simply to provide multiple IP's for a given domain name, or
server.

Docs on the inside out part appear to have moved. Catched versions are
http://216.239.39.100/search?q che:MYvpvnMUmfsC:www.linuxvirtualserver.org/~julian/+Julian+routes&hl=en&start=1&ie=UTF-8
http://216.239.39.100/search?q che:OeB96bctG8UC:www.linuxvirtualserver.org/~julian/nano.txt+Julian+routes&hl=en&start=2&ie=UTF-8

Julian is a regular participant on this list so if he catches this
hopefully he can provide a url to where things currently reside.
Otherwise send him an email for the patches you need when you are ready.

Docs on the outside in
http://www.samag.com/documents/s\x1824/sam0201h/0201h.htm
(Pay attention to the DNS part and forget the rest)

Or see the Bind manual, or the manual/docs for your DNS server on using
more than one IP address for a domain name.

Also make sure to dig through the archives of this list. There is allot
of info there.

In a day or two I will post my old config. It will not come with
instructions just the actual commands and IP addresses I used when load
balancing/combining two SDSL lines.

-- 
Sincerely,
William L. Thomson Jr.
Support Group
Obsidian-Studios, Inc.
3548 Jamestown Ln.
Jacksonville, FL 32223
Phone/Fax  904.260.2445
http://www.obsidian-studios.com

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Re: [LARTC] routing strategies for 2 adsl setup

[Martin A. Brown]

 : Docs on the inside out part appear to have moved. Catched versions are
 : http://216.239.39.100/search?q che:MYvpvnMUmfsC:www.linuxvirtualserver.org/~julian/+Julian+routes&hl=en&start=1&ie=UTF-8
 : http://216.239.39.100/search?q che:OeB96bctG8UC:www.linuxvirtualserver.org/~julian/nano.txt+Julian+routes&hl=en&start=2&ie=UTF-8
 :
 : Julian is a regular participant on this list so if he catches this
 : hopefully he can provide a url to where things currently reside.
 : Otherwise send him an email for the patches you need when you are ready.

Visit Julian's page:

  http://www.ssi.bg/~ja/
  http://www.ssi.bg/~ja/#routes

 : Also make sure to dig through the archives of this list. There is allot
 : of info there.

Use "site:mailman.ds9a.nl" in addition to your other keywords at google:

  http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=site%3Amailman.ds9a.nl+2+DSL+lines&btnG=Google+Search

-Martin

-- 
Martin A. Brown --- SecurePipe, Inc. --- mabrown@securepipe.com

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Re: [LARTC] routing strategies for 2 adsl setup

[christopher cuse]

Messrs Thompson and Brown,

thanks for the information -- will research and play more. the absence
of a patched kernel probably explains the one sided nature of the
traffic ... :-)

cheers

christopher cuse 

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