Cisco 2851 IPSec VPN tunnels issue

Posted on 2009-04-12
Last Modified: 2012-05-06
Hi, I have a dilema with configuring IPSec site-to-site vpn. I have five office loations and I can configure three tunnels on each router without any hitch. However, when I try to configure the fourth or fifth tunnel, a pop-up message shows to disable an existing tunnel to enable the fourth one.

At first, I thought this was due to some licensing issue. However, after checking with the Cisco reseller, they told me I can do up to 200 site to site IPSecs. I have three Cisco 2811's, one 2851 , and another 3845, all with base VPN modules.

I am lost... what should I do next?

Thank you.
Question by:mhanifk
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Expert Comment

ID: 24128404
May be you have crossed IP's at tunnels?

Author Comment

ID: 24292655
Actually, that problem was resolved by creating static routes for each of the tunnels. Strangely, I have only one WAN interface, but the Cisco IOS couldn't route the tunnels using single routing default route from NAT to WAN.

Accepted Solution

ee_auto earned 0 total points
ID: 24821263
Question PAQ'd, 500 points refunded, and stored in the solution database.

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

The Cisco RV042 router is a popular small network interfacing device that is often used as an internet gateway. Network administrators need to get at the management interface to make settings, change passwords, etc. This access is generally done usi…
Let’s list some of the technologies that enable smooth teleworking. 
After creating this article (, 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…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…
Suggested Courses
Course of the Month7 days, 5 hours left to enroll

622 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