Load Balancing Multiple DS3s (outgoing) on a 7500

Sat Mar 13 04:24:33 UTC 2004

Patrick,

I suspect that each FE goes to a different AS...

On 3/12/04 7:27 PM, "Patrick W.Gilmore" <patrick at ianai.net> wrote:

> 
> On Mar 12, 2004, at 10:39 PM, Drew Weaver wrote:
> 
>>             Does anyone know of an article, or documentation regarding
>> load balancing the traffic on 3 or more FastEthernet interfaces on the
>> outgoing direction? Right now we're running BGP internally, and the
>> routes that are being chosen based upon the final BGP decision step or
>> what I like to call the 'IP address tie breaker' which is not always
>> optimal. We have a cisco 7500 that is connected to 4 other Cisco 7500s
>> which each have 45Mbps ds3s to the Internet, we would like to load
>> balance the outgoing traffic across all 4 of these 7500s, can anyone
>> shine any advice my way? I noticed that there are instructions on
>> Cisco's site regarding doing LB on 12000s.
> 
> Load balancing with BGP is the same on any cisco router.
> 
> Are you doing BGP with the routers on the other side of those DS3s?  If
> you are, you will need their help in load balancing properly.  Get them
> to allow you peering with a loopback interface and use equal cost
> static routes to do the load balancing to that loopback interface.