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best practice in load balacing internet traffic using 2 ISP's.

what is the BEST PRACTICE in load balacing internet traffic using 2 ISP's.

NOTES:

-web/mail servers are hosted

-single internet router

-Public IP address inside the internet router

OBJECTIVE:

-half of the internet traffic will go to the ISP1

-other half will go to ISP2

-

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: best practice in load balacing internet traffic using 2 ISP'

Hi,

you cannot easily load balance with public address "inside". For this, you need BGP, and both ISP willing to route the network block you've been assigned (likely, by one ISP).

If you are OK with private addresses, you can load balance using NAT and that does not requires BGP.

Hope this helps, please rate post if it does!

2 REPLIES
Hall of Fame Super Gold

Re: best practice in load balacing internet traffic using 2 ISP'

Hi,

you cannot easily load balance with public address "inside". For this, you need BGP, and both ISP willing to route the network block you've been assigned (likely, by one ISP).

If you are OK with private addresses, you can load balance using NAT and that does not requires BGP.

Hope this helps, please rate post if it does!

Re: best practice in load balacing internet traffic using 2 ISP'

Hi,

You can go with BGP. Use the 'weight' attribute to assign weights to routes (as this is single internet router). Please see the link below..

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00800945bf.shtml

hth

MS

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