06-10-2013 12:14 PM - edited 03-04-2019 08:09 PM
Good Day,
I would like to find out if ISP load balancing can be accomplished using BGP? This is a multi-home topology with two ISPs connecting to two routers. These routers will be connected to a firewall cluster. The customer wants load balancing deployed using ratios with the different ISPs.
Please advise if this configuration is possible and please explain how?
06-10-2013 12:21 PM
Load sharing witnh BGP comes naturally but not with pre-set ratios or anything deterministic.
For that, use a load-blancing appliance.
06-10-2013 12:57 PM
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Posting
If your routers support OER/PfR, the can do outbound load balancing with different ratios per link.
06-11-2013 03:46 AM
JosephDoherty wrote:
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If your routers support OER/PfR, the can do outbound load balancing with different ratios per link.
Unfortunately, it is a solution that that has not been much proven and even less adopted, so does not have meet the favor of the market, that instead uses dedicated appliances.
06-11-2013 06:02 AM
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Paolo Bevilacqua wrote:
Unfortunately, it is a solution that that has not been much proven and even less adopted, so does not have meet the favor of the market, that instead uses dedicated appliances.
Yes, that's true but I believe that's mainly because other vendor appliances pre-date Cisco's OER/PfR.
There's much to be said for using the known solution, but if we only ever use what has been used, or what's been used, technology improvement might be slowed or more expensive than it otherwise needs to be. Why I remember a time in networking when one could say "Who's/what's Cisco?" Or even, "What's IP?"
I've used 3rd party appliances and I've also used OER/PfR. I had found both to work. Like much else, you look at your requirements and possible solutions.
I'm not recommending OER/PfR over an appliance, just noting it's a possible option.
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