[c-nsp] Different ISPs with load balance

Justin M. Streiner streiner at cluebyfour.org
Mon Feb 27 09:02:09 EST 2006

On Mon, 27 Feb 2006, Marcin Mazurek wrote:

>> If your providers are not accepting routes less that /24 and that one of
>> them is dependant on the other then you won't be able achieving much in
>> this case.
> Would be any problem if both providers would advertise this /24 prefix under
> their own ASN?

It's not an ideal solution.  While originating a route advertisement from 
two disjoint ASNs can be made to work, it's definitely not an optimal 
solution and troubleshooting connectivity problems becomes more complex.
Also, if you want to change something about your border routing policies 
in the future, you have to get your upstreams to make those changes on 
your behalf, in addition to you making whatever changes you need between 
your network and your upstreams.


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