mulithomed internet BGP question

Unanswered Question
Jan 4th, 2008
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Hello,

I have two DS3 connections with two diffrent Service providers. Each with thier own CPE router. Now I want traffice to flow equally accross both routers so I will for not just adversite with no prepending. My Question is the return traffic. If client makes a connection from the internet and is routed though Service provider 1 and then hits the firewall how does the firewall know which conntection to send the return traffic?

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royalblues Fri, 01/04/2008 - 06:09
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The firewall will route the traffic based on its routing table for the source which could be via SP2.


On the internet its possible that a packet gets routed asymmetrically


Narayan

Danilo Dy Fri, 01/04/2008 - 06:14
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Hi,


The firewall will always use the configured default gateway. The default gateway could be your first router or second router - depends on how you configure it (i.e. HSRP and which one is active).


Then the router will make decision by using the following BGP routing algorithm in this link http://www.cisco.com/warp/public/459/25.shtml


Regards,

Dandy


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