Wireless Access

Regular Contributor I

IPSEC/VPN address pool lease time

When an IP address is assigned from the address pool configured within VPN services how long is the lease time for that address?  For instance, if a VIA client connects pulls and address then the user disconnects when will that address be allocated back to the pool for assignment again?


Re: IPSEC/VPN address pool lease time

When a system disconnects from an L2TP VPN Pool, the IP will be aged out based upon 6 * the l2tp hello timer.   The hello timer is 60 seconds by default; so 6 minutes should be the ageout.  


To determine this in your environment:


show vpdn l2tp configuration


>Hello timeout: 60 seconds


To change your timer:

config terminal

vpdn group l2tp

l2tp tunnel hello <timer>

Systems Engineer, Northeast USA

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