[nSLUG] fault tolerant internet connection

Crawford, Andrew (IT) Andrew.Crawford at morganstanley.com
Thu Jul 28 14:56:34 ADT 2005

Routing *out* is easy but the problem is you also need to route *in*.

That requires that you obtain provide-independent (PI) address space and either...

* you have your own AS (autonomous system number, which you basically can'y get) and exchange BGP routing information with both Eastlink and Aliant (which they won't do) 


* Have both Eastlink and Aliant announce your IP block as belonging to their AS. This does work but it's a hack. In any case it doesn't matter because they won't do it for you.

So, to cut a long story short, you can't do it.



> -----Original Message-----
> From: nslug-bounces at nslug.ns.ca 
> [mailto:nslug-bounces at nslug.ns.ca] On Behalf Of Tim
> Sent: 28-Jul-05 14:52
> To: nslug at nslug.ns.ca
> Subject: [nSLUG] fault tolerant internet connection
> Does anyone know of a simple way to route packets out over 
> both an Eastlink connection and an Mpowered connection? I 
> have done some static routing, but what I'm looking for is to 
> not only balance the load on each connection, but to use 
> something similar to an OSPF type routing policy where the 
> shortest (and thus in theory the fastest) connection is made. 
> This would also route around if either the cable or mpowered 
> went out. I currently use Slackware (10.0 on one machine and 
> 10.1 on another) I've looked at Zebra before, but I cannot 
> find sufficent documentation to wrap my brain around.
> Thanks,
> Tim
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