Configuring VPN
GRE Tunnel
Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models)
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Enable
Check the box to enable the tunnel, or uncheck the box
to disable it.
Checksum
Choose
Input
,
Output
,
Both
, or
None
. The default is
None.
Input requires that all inbound packets have the correct
checksum. Output requires the checksums for outbound
packets. Both requires the checksum for all inbound and
outbound packets.
Sequence
Choose
None
,
Both
,
Input
, or
Output
. The default is
None.
Output requires a sequence number for outbound
packets. Input requires a sequence number for inbound
packets. Both requires a sequence number for inbound
and outbound packets.
Key
Choose
None
,
Both
,
Input
and
Output
value. The
default is None.
Input parameter sets the key for input. Output parameter
sets the key for output. Both sets the key to use in both
directions.
Key value
If you chose a key, enter the key value between 0 and
4294967295.
WAN Interface
Name
Choose the WAN interface that is used to create the
GRE Tunnel with the remote host.
Destination IP or
HostName
IP address or FQDN of the remote device that will
terminate the tunnel.
Remote IP Address/
Subnet Mask
Lists the remote hosts and networks available via the
tunnel.
Modify Remote IP
Address/Subnet
Mask
To define a host or network that is reachable via the
tunnel, enter the address and subnet mask, then click
Add. To remove an address, select it in the Remote IP
Address list and click Delete.
GRE Tunnel Settings
Field
Description