topic Re: Balanced Traffic between two VPNs in Network Security

Balanced Traffic between two VPNs

Kinai2008 — Fri, 21 Feb 2020 11:17:47 GMT

Hi.

Now I have a VPN between two routers Cisco through internet to connect two locations (A and B).

I want to put other router in location A and create other VPN to the same router of location B and then balanced the traffic between the two VPNs. Is it posible??

If it's posible, how must I configure the routers??

Thanks.

Kinai.

Re: Balanced Traffic between two VPNs

Istvan_Rabai — Mon, 16 Feb 2009 19:09:55 GMT

Hi Kinai,

Yes, it's possible.

I would suggest you to set up 2x GRE over IPSec tunnels:

One from A1 to B, another from A2 to B.

Run EIGRP or OSPF through the tunnels so you get the best possible convergence times and reliability.

EIGRP can do unequal cost load balancing, while OSPF can do equal cost load balancing through the tunnels.

Use 2 separate physical interfaces on the router in location B so you avoid a single point of failure (though the router B itself will be a single point of failure).

Cheers:

Istvan

Re: Balanced Traffic between two VPNs

Kinai2008 — Mon, 16 Feb 2009 19:15:12 GMT

>I would suggest you to set up 2x GRE over IPSec tunnels.

Can I use Site-to-site VPN??

>Use 2 separate physical interfaces on the router in location B so you avoid a single point of failure (though the router B itself will be a single point of failure).

Really there are two routers in location B too. 😞 The ideal must be that there would be four VPNs: A1B1, A1B2, A2B1 & A2B2. But I think that it don't know how to do it. Could you tell me a page where explain it??

Thanks for your answer.

Kinai.

Re: Balanced Traffic between two VPNs

Istvan_Rabai — Mon, 16 Feb 2009 21:18:27 GMT

Hi Kinai,

You can use a site-to-site VPN as well, but is uses static routing so it is not so flexible when it comes to link failures.

I have a link to GRE configurations:

http://www.cisco.com/en/US/tech/tk827/tk369/tk287/tsd_technology_support_sub-protocol_home.html

I hope this helps you.

Cheers:

Istvan

Re: Balanced Traffic between two VPNs

Kinai2008 — Mon, 16 Feb 2009 21:52:28 GMT

Yes, thanks.

Kinai.