Operation Manual

Enabled: Select to enable GRE Keep Alive to continually send keep-alive packets to the remote peer.
Rate: Choose the length of time in seconds for each check (Default: 10 seconds. Range: 2 – 3600 seconds).
Retry: Select the number of attempts before the GRE tunnel is considered down or up (Default: 3. Range: 1 – 255).
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 both tunnels have Keep Alive 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 Keep Alive 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 Keep Alive page, set the
Failback Tunnel to your primary tunnel.
L2TP Tunnels
NOTE: L2TP Tunnels require a feature license not included with ECM Prime. Go to System Settings → Feature
Licenses to enable this feature.
Layer 2 Tunneling Protocol (L2TP) tunnels can be used to create a connection between two private networks.
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