User`s guide

Vigor2960 Series User’s Guide
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periodically when a tunnel is idle. Use the value 0 to disable
this function. The recommended value is 30 seconds if
enabled.
DPD Timeout
The timeout timer. The peer will be declared dead once no
acknowledge message is received after timeout value. Use
the value 0 to disable this function. The recommended value
is 120 seconds.
Apply
Click it to save the configuration.
Cancel
Click it to exit the page without saving the configuration.
5. After filling the required information for Advanced, click the GRE tab to open the
following page.
Available parameters are listed as follows:
Item Description
Enable GRE
Function
Click Enable to enable such function.
Local GRE IP
The virtual IP address of the router, specified for this tunnel.
Remote GRE IP
The virtual IP address of the remote client, specified for this
tunnel.
Auto Generate
GRE Key
Click Enable to enable such function.
If you click Disable, you have to type GRE In Key and
GRE Out Key respectively.
GRE In Key
Type the hexadecimal number as GRE In Key. This value is
used for the router to authenticate the source of the packet.
The length is 4 bytes