Traffic sharing b/w two ISP'S

Unanswered Question
Jul 21st, 2008


We are using two ISP A and B, I want to send the HTTP traffic via ISP A and mail SMTP traffic via ISP B. Would you please let me know the simple configuration for this concept.As per the attached fig.

I have this problem too.
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Haris P Mon, 07/21/2008 - 22:58

Hi ,

1 .NAT mail server or Exchange server local IP with ISP B Public IP

2. NAT Your LAN Proxy server / ISA server Local IP with ISAP A Public IP

3 . Do a route -map on the Gwateway router to force ISP A IP's go through ISP A and ISP B IP's o go through ISP B .

Another way will be doing one ACL to match http traffic and another ACL to match smtp traffic and do a PAT (NAT overload ) making this accesss-list as souce list with ISP A and B

I hope this helps




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