Cradlepoint COR IBR1100/IBR1150 Manual page 124

Connection Idle Time: 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. (Default: 30 seconds. Range: 10 – 3600 seconds.)
Request Frequency allows you to adjust the delay between these DPD packets. (Default: 15 seconds. Range: 2 – 30 seconds.)
Maximum Requests: Specify how many requests to send at the selected time interval before the tunnel is considered dead. (Default: 5. Range: 2 – 10.)
Failback Retry Period: If you have VPN tunnel failover/failback enabled (see below), set the time period between each check on the primary network after failover. (Default:
10 seconds. Range: 5 – 60 seconds.)
Failover Tunnel and Failback Tunnel: Use these settings to create two tunnels – one as the primary tunnel and one as the backup tunnel. To configure tunnel
failover/failback, complete the following steps:
1. Create two tunnels: one for primary and one for backup. Make sure that both tunnels have the same Remote Network and that both have Dead Peer
Detection enabled.
2. Choose one to be the primary tunnel. Open the editor for this tunnel and make sure Tunnel Enabled is selected. Then go to the Dead Peer Detection page.
Under Failover Tunnel select the other tunnel you have created.
3. Open the editor for the failover tunnel. Make sure Tunnel Enabled is not selected. On the Dead Peer Detection page, set the Failback Tunnel to your
primary tunnel.
Global VPN Settings
These settings apply to all configured VPN tunnels.
10/13/2014
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