Digi TransPort WR11 User Manual page 272

Configuring network interfaces
Enable GRE checksums
Selects whether to add GRE checksums to GRE packets when the router is terminating a GRE
tunnel. Set this parameter to off to disable checksums, and to on to enables checksums.
Enable IGMP on this GRE tunnel
This IGMP parameter enables or disables the transmission and reception of IGMP packets on
this interface. IGMP advertises members of multicast groups. If IGMP is enabled, and a
member of a multicast group is discovered on this interface, multicast packets for this group
received on other interfaces are sent out this interface.
Enable DNS inbound blocking
Enables or disables blocking DNS requests on the GRE tunnel, to prevent the tunnel from
responding to DNS requests over this interface.
Enable IP analysis
When set to on, the un-encapsulated IP traffic is captured into the analyser trace.
Enable Tunnel analysis
When set to on, the GRE encapsulated packets and keepalives is captured to the analyser
trace.
3. Click Apply.
Command line
Command Instance Parameter Values
tun n
tun n
tun n
tun n
tun n
tun n
tun n
tun n
tun n
Note RIP Routing Parameters-command line only: In the command-line interface, there are
commands and sub-parameters for GRE Tunnels that specifically relate to RIP. See
Information Protocol (RIP) settings
Digi TransPort® Routers User Guide
Configure Generic Routing Encapsulation (GRE) interfaces
metric Numeric Metric
value
MTU MTU value
tunkey Key number
Firewall on,off
csum on,off
block_dns on,off
igmp on, off
ipanon on, off
tunanon on, off
to configure these sub parameters.
Equivalent web parameter
Metric for the route associated with this
interface
Maximum transmission unit size
Key number
Turn firewall on or off
Enable GRE checksums
Enable DNS inbound blocking
Enable IGMP packets
Enable IP analysis for traffic on this
interface
Enable GRE tunnel analysis
Configure Routing
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