Is ICMP required for site-to-site VPN

[paulio.hughes]

Hi,

I am in the process of setting up a site to site VPN connection with a Cisco 1841 with the AIM-VPN-SSL-1 module and an NEC IX2015. We are using a GRE tunnel with IPSec

The problem we are having is the NEC router will not repsond to ICMP packets (and there isn't a way to make it respond). Will this cause any problems with the tunnel?

Thanks!

Paul

[Jennifer Halim · Accepted solution]

Don't believe it will cause any problem. The most you can't do is not being able to ping to test connectivity. Other than that, the IPSec LAN-to-LAN tunnel should work just fine.

[paulio.hughes]

Thanks for the answer! much appreciated