Cisco SRP521W-K9-G1 Administration Guide - Page 189

Configuring VPN GRE Tunnel 7 GRE Tunnel Settings Field Description 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/ Lists the remote hosts and networks available via the Subnet Mask 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. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 189