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CRADLEPOINT IBR600 USER MANUAL Firmware ver. 3.3.0
7.7.5Page 5: Dead Peer Detection
Dead Peer Detection (DPD) defines how the router will detect when one end of the IPsec session loses connection while a policy is in use.
Connection Idle Time allows you to configure how long the router will allow an IPsec session to be idle before beginning to send Dead Peer Detection (DPD) packets to the peer machine.
Request Frequency allows you to adjust the delay between these DPD packets to send as quickly as every 2 seconds up to 30 seconds apart.
Additionally, you can specify how many Maximum Requests to send at the selected time interval before the tunnel is considered dead.
You must click Finish to save your VPN tunnel.
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