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VPN timeout issue


I have a number of Avaya VPN phone (5610sw) - that are connected to an IPO500 via a Cisco ASA5510.

Everything works, except that all my phones reboot after exactly 4 days. I cannot see where this timeout value is applied..  When booting, I see the following in the debug log:

I've changed my office IP address to :

I've changed my ASA IP to:

4|Nov 22 2010|11:54:11|113019|||||Group = cirquefr, Username = vpnXXXXX, IP = FrOfficeOutside, Session disconnected. Session Type: IPsecOverNatT, Duration: 4d 0h:00m:41s, Bytes xmt: 2798325, Bytes rcv: 1798611, Reason: Phase 2 Mismatch

6|Nov 22 2010|11:54:11|602304|||||IPSEC: An outbound remote access SA (SPI= 0xC3B5C699) between and FrOfficeOutside (user= vpnXXXXX) has been deleted.

6|Nov 22 2010|11:54:11|602304|||||IPSEC: An inbound remote access SA (SPI= 0xECD12D85) between and FrOfficeOutside (user= vpnXXXXX) has been deleted.

7|Nov 22 2010|11:54:11|713906|||||Group = cirquefr, Username = vpnXXXXX, IP =, Active unit receives a centry expired event for remote peer FrOfficeOutside.

7|Nov 22 2010|11:54:05|710007|FrOfficeOutside|1038||4500|NAT-T keepalive received from FrOfficeOutside/1038 to outside:

7|Nov 22 2010|11:53:49|710007|FrOfficeOutside|1045||4500|NAT-T keepalive received from FrOfficeOutside/1045 to outside:

7|Nov 22 2010|11:53:49|710007|FrOfficeOutside|1547||4500|NAT-T keepalive received from FrOfficeOutside/1547 to outside:

7|Nov 22 2010|11:53:45|713906|||||Group = cirquefr, Username = vpnXXXXX, IP =, Active unit process rekey delete event for remote peer FrOfficeOutside.

Any help would be much appreciated!



Super Bronze

Re: VPN timeout issue

You would need to check if the SA lifetime for phase 2 matches at both end, and which lifetime it actually uses (there are 2 types of lifetime, ie: time base and size base). And if you have keepalives configured, you might want to disable it since the 2 ends of the VPN tunnel is different vendors, and they would not understand each other's keepalives.