IPSEC tunnel questions

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remi-reszka Thu, 11/13/2008 - 19:54
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Hi Ken,

Are you using site2site IPSec tunnels only? Or you are also using GRE?



remi-reszka Fri, 11/14/2008 - 07:16
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Hi Ken,

Some time ago I was trying to resolve the same problem i.e. to keep the IPSec tunnel (no GRE) all the time up. All I found is the IPSec tunnel only come up when there is an interesting traffic coming into the tunnel. I counld't find anything that would send keep alives to keep the tunnel up.

There are few alternatives I guess, you can use GRE tunnels with IPSec in transport mode so it should keep it up all the time. The second alternative that I am using now is EZVPN server and remote in network extension mode. It all works great. With EZVPN the IPSec tunnel comes up straigth away and stays in QM_IDLE state even without intersting traffic flowing through it.

Hope it helps.



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