[c-nsp] Outbound Load balancing using eBGP

Roger Wiklund copse at xy.org
Tue Dec 21 06:16:25 EST 2010


On Mon, Dec 20, 2010 at 10:30 PM, RAZ MUHAMMAD <raz.muhammad at gmail.com> wrote:
> Hi all,
>
> I would like to find out how one can use BGP to load balance outbound
> traffic, while multi homed to 2 transit providers or ISPs and getting full
> routing tables, no default routes? The BGP peer at the client end is a non
> Cisco router, so would not be able to use the multipath feature. The load
> balancing is intended for all routes in the routing table, or at least to
> achieve some kind of load distribution.
>
> Is there any other way to achieve an optimal outbound load balancing method
> using eBGP?
>

Just do "maximum path 2" to loadbalance on equal paths. Per session is default.
Also if you want to ignore as path use "bgp bestpath as-path multipath-relax"

If your non Cisco router is capable of handling full routing table,
surley it must support at least multipath. Check with the vendor.


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