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How to implement Load Balancing on a WAN

By badnh ·
I currently have 1 T1 between my main building to my distribution center. I am putting a 2nd T1 in and want to implement Load Balancing to equally share the traffic between the two buildings, which are in two different states. How can I do this?

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How to implement Load Balancing on a WAN

by badnh In reply to How to implement Load Bal ...

Point value changed by question poster.

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How to implement Load Balancing on a WAN

by ckilday In reply to How to implement Load Bal ...

Speaking from a Cisco background, the easy way to do it is to connect both T's to the same routers at each site. The router should discover them as "equal-cost paths". The router is normally set up to load share based on destination, which resultsin all traffic for one destination going over one circuit, and all traffic for another destination at the same location going across the other circuit. But if I understand your description properly, your destination is the same, so you want to set the interfaces up to load share on a per packet basis. In other words, one packet goes across T #1 and the next packet goes across T #2. This can be done by issuing the command "no ip mroute-cache" on each of the 2 serial interfaces on each router.

The only caveat is that each packet undergoes more processing and that means your routers have to have adequate processing power and memory. If you have Cisco routers, contact your local rep for a review of your plan. If you have another vendor's equipment, contact their representative or technical support and request their assistance. Hope this helps.
- ck

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How to implement Load Balancing on a WAN

by badnh In reply to How to implement Load Bal ...

The question was auto-closed by TechRepublic

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How to implement Load Balancing on a WAN

by estebandelatorre In reply to How to implement Load Bal ...

You will need to connect both t1 lines to the same routers on both extremes.
The routers will discover equal cost path for both t1, and then start sending packets using one line or the other based upon traffic congestion.
There are many routers with two or more wan interfaces able to do load balancing between the two interfaces, Cisco, Alcatel, Cabletron, etc.

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How to implement Load Balancing on a WAN

by badnh In reply to How to implement Load Bal ...

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How to implement Load Balancing on a WAN

by badnh In reply to How to implement Load Bal ...

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