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How to bind 3 Lease line together for connect Internet?

I have 3 lease line which from different ISP for connect to Internet, I want to bind it together. I have a 2611XM, I wish these lease line can share its bandwidth. how can I do?

8 REPLIES
VIP Purple

Re: How to bind 3 Lease line together for connect Internet?

Hello,

you could use CEF load-balancing for this purpose. Enable CEF in global configuration mode:

2611#conf t

2611(config)#ip cef

and then enable ip load-sharing on each of the 3 interfaces:

2611#conf t

2611(config)#interface serial0

2611(config-if)#ip load-sharing per-destination

I would use per-destination load-sharing rather than per-packet load-sharing, since you are connecting to different ISPs.

HTH,

Georg

Anonymous
N/A

Re: How to bind 3 Lease line together for connect Internet?

Thank U! I will try it!

Anonymous
N/A

Re: How to bind 3 Lease line together for connect Internet?

First,thank you again!

But,do I neet to use any route portocol or static route? If I have to do that, How?

VIP Purple

Re: How to bind 3 Lease line together for connect Internet?

Hello,

are you running BGP with your ISPs right now ? If so, check the following document:

Load Sharing when Multihomed to Two ISPs Through a Single Local Router

http://www.cisco.com/en/US/partner/tech/tk365/tk80/technologies_configuration_example09186a00800945bf.shtml#3

Or this document, which describes load sharing using OSPF:

Troubleshooting Load Balancing Over Parallel Links Using Cisco Express Forwarding

http://www.cisco.com/en/US/partner/tech/tk827/tk831/technologies_tech_note09186a0080094806.shtml

HTH,

Georg

Anonymous
N/A

Re: How to bind 3 Lease line together for connect Internet?

I have no right for read those docs

Anonymous
N/A

Re: How to bind 3 Lease line together for connect Internet?

Somebody told me using CEF will have compatable problem with NAT. I do using NAT, but I using Firewall to process the NAT operation. is that the problem still exit?

Thank!

Silver

Re: How to bind 3 Lease line together for connect Internet?

There are a number of approaches you could use, depending upon the ISPs, the links you are using to reach them, the applications you are trying to support, and the relative importance you place on availability, load sharing, and complexity (you only get to chose two). Beyond that, you have provided insufficient information to make any reasonable recommendation other than study your options.

There is a brief overview of the various techniques available in the white papers section on my web site, you might want to start there, and use the approaches you think would fit you best to search the cisco web site (the pages cited by another poster are accessible to you, just not using the links provided). Try searching on the titles given.

After you have a better idea of what you want, post again with more specific questions (hint. your original posting is on the order of asking "I live 50 km from town, what vehicle should I buy?" The answer depends upon the availability of roads (you might need a helicopter to get there), the location (or a dog sled), what you need to transport (mail = motorcycle, groceries = passenger car, a family with 5 kids = minivan, stock for your building supply business = 18 wheeler, etc.)

If you don't have time to learn or simply want an answer, consider hiring a consultant to help you understand your needs and options.

Good luck and have fun!

Vincent C Jones

www.networkingunlimited.com

Anonymous
N/A

Re: How to bind 3 Lease line together for connect Internet?

Thank you! I really find those documents from Cisco website.

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