Tuesday, August 4, 2020

Load Balancing of Campus Network through EBGP advertisement

I am trying to utilise my both ISPs links to access my network from outside. Assuming my DC network IP block would be 203.XXX.XX0.0/23 with total 510 possible hosts, My requirement is to advertise 203.XXX.XX0.0/24 as best in ISP router 1 and 203.XXX.XX1.0/24 as best in ISP router 2.

From outside network when my DC applications and servers are accessed for 203.XXX.XX0.0/24 they have to come through ISP 1 and for 203.XXX.XX1.0/24 they have to come through ISP 2

aspath prepend didn't help in achieving this, Please suggest alternative method to accomplish my goal

Attached my simple network architecture



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