On Tue, 10 Apr 2001, Larry Lamb wrote:
> > 2) Customer & Default Routes from AS providers
>
> You receive 0.0.0.0 routes and all other routes that originate from the
> providers AS (providers internal routes). This will route traffic coming
> from customers of this provider back to the provider. All other traffic
> will get balanced out both providers.
You usually don't balance traffic in this situation - just use the
higher-speed/higher-reliability link as primary, and the other as backup.
This is because connectivity between different providers can vary a lot,
and you have no way of deciding which provider would be best for a certain
destination.
That is why you need to use LOCAL_PREF, AS_PATH prepend or communities...
> > 3) Full Routes from All providers
>
> Here you have all known routes being send to you. This provides the best
> routing outbound for customer connections, but requires a great deal of
> memory because of the number of routes (75,000 +) in the tables.
Actually, we're just under 100.000 routes right now!
Check this:
http://www.employees.org/~tbates/cidr-report.html#General_Status
Cheers,
Saverio
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=147&t=121
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