Solved

Site-to-Site VPN Load Balancing with Cisco

Posted on 2010-08-27
4
1,486 Views
Last Modified: 2012-05-10
What I am wondering about is if there is a way to load balance 2 VPN tunnels as one..  The picture below shows my situation... I have a site with 1 ISP that has a 2821 router, and a 2nd site with 2 different ISPs with a cisco 1841 router.  I am wondering if I can establish 2 seperate tunnels between the devices, and then somehow loadbalance traffic over the 2 seperate tunnels?  The reason I want to set this up is because the ISP3 in the picture below is much better than ISP1 and 2 and we are maxed out with ISP1 and 2 as far as bandwidth goes.

I am not interested in purchasing a seperate piece of equipment to handle the VPN load balancing... Just wondering if it is possible with the Ciscos we have?

 Example Picture
If that does not work out, then I am planning on establishing the 2 VPN tunnels, and sending some of our traffic through 1 tunnel, and the rest through the 2nd tunnel..  If you know of any problems with that type of setup, please feel free to let me know..

Appreciate any help you can provide!

Thanks!
0
Comment
Question by:cathchar
  • 2
  • 2
4 Comments
 
LVL 9

Accepted Solution

by:
ffleisma earned 500 total points
ID: 33544299
you can setup an GRE over ipsec instead of the normal l2l ipsec. the difference is that GRE over ipsec can carry routed protocols over the ipsec, effectively you would then be able to setup a routing protocol between the sites. OSPF and EIGRP are two routing protocols that enables load balancing.

with just an l2l ipsec VPN, i don't think you could load balance but you can have the setup fail-over for redundancy.

hope this helps :-)
0
 

Author Comment

by:cathchar
ID: 33544359
I've heard of GRE,,, but not too familiar with it... If anyone has any links about configuring GRE over IPSEC on ciscos, I'd be thankful for your post..

I definately need the encryption, so GRE over IPSEC sounds great...

Thanks ffleisma,,,  keep the info coming if you got it guys.,.. Appreciate it!
0
 
LVL 9

Expert Comment

by:ffleisma
ID: 33544410
0
 

Author Closing Comment

by:cathchar
ID: 33558779
Great info.. Exactly what I am looking for.  Thanks!
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Secure VPN Connection terminated locally by the Client.  Reason 442: Failed to enable Virtual Adapter. If you receive this error on Windows 8 or Windows 8.1 while trying to connect with the Cisco VPN Client then the solution is a simple registry f…
This is an article about my experiences with remote access to my clients (so that I may serve them) and eventually to my home office system via Radmin Remote Control. I have been using remote access for over 10 years and have been improving my metho…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question