User Manual
GWR High Speed Cellular Router Series
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Session ID
Set the session id, which is a 32-bit integer value. Uniquely identifies the
session being created. The value used must match the peer_session id value
being used at the peer.
Cookie
Sets an optional cookie value to be assigned to the session. This is a 4 or 8 byte
value, specified as 8 or 16 hex digits, e.g. 014d3636deadbeef. The value must
match the peer cookie value set at the peer. The cookie value is carried in L2TP
data packets and is checked for expected value at the peer. Default is to use no
cookie.
Peer IP address
Set the IP address of the remote peer.
Peer Tunnel ID
Set the peer tunnel id, which is a 32-bit integer value assigned to the tunnel by
the peer. The value used must match the tunnel id value being used at the peer.
UDP Destination Port
Set the UDP destination port to be used for the tunnel. Must be present when
udp encapsulation is selected. Ignored when ip encapsulation is selected.
Peer Session ID
Set the peer session id, which is a 32-bit integer value assigned to the session by
the peer. The value used must match the session id value being used at the
peer.
Peer Cookie
Sets an optional peer cookie value to be assigned to the session. This is a 4 or 8
byte value, specified as 8 or 16 hex digits, e.g. 014d3636deadbeef. The value
must match the cookie value set at the peer. It tells the local system what cookie
value to expect to find in received L2TP packets. Default is to use no cookie
Encapsulation
Set the encapsulation type of the tunnel. Valid values for encapsulation are:
UDP, IP.
Bridged
The two interfaces can be configured with IP addresses if only IP data is to be
carried. To carry non-IP data, the L2TP network interface is added to a bridge
instead of being assigned its own IP address. Since raw ethernet frames are
then carried inside the tunnel, the MTU of the L2TP interfaces must be set to
allow space for those headers.
Interface IP Address
Local private P-t-P IP address.
Peer Interface IP
Address
Remote private P-t-P IP address.
MTU
MTU of the L2TP interface. Default 1446 for bridged or 1488 for Layer 3 tunnel.
Edit
Click Edit to edit selected tunnel from the table.
Delete
Click Delete to delete selected tunnel from table.
Reload
Click Reload to discard any changes and reload previous settings.
Save
Click Save to create new, or save changes to existing tunnel.
Table 18 –L2TP parameters
Figure 37– L2TP Summary screen
