03-05-2008 10:38 PM - edited 03-09-2019 08:15 PM
Hi,
I am configuring L2TP (without IPSec) tunneling between CISCO 850 router (acting as LNS) and Windows XP (acting as LAC). I want to allow full access to internal network (including layer 2 packets)to clients connecting through L2TP tunnel. I created Virtual-Template and unnumbered its ip to Vlan interface, that include all switching ports (FE0-FE3). So all clients reside in single subnet, I use the same DHCP pool and I don't need to do any routing. The problem is that when none devices are connected to these FE0-FE3, Vlan1 interface has state DOWN and as I suspect because of that clients, that are connected through L2TP cannot ping or access router in any other way. When I connect to Vlan1 single device, everything is working fine. How to fix it?? Pleae help.
I attached my IOS configuration file
Thanks indeed
03-11-2008 02:55 PM
At least one of the devices should be connected to any of the FE ports to keep the interface up. As a workaround try configuring a loopback or interface and un-number its ip to VLAN interface.
03-12-2008 03:51 AM
Yep... clear. I created interface loopback, assigned it necessary IP address and then unnumbered Vlan and Virtual-Template IP address'es to it. Everything works fine.
Thanks for help
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide