C-M-G
Series
Manual
© TDT GmbH
Chapter 5: Network Configuration
Seite 63 von 136
Command
Description
Incoming
requires that all input packets are serialized
Outgoing
enables sequencing of outgoing packets
Command
Description
Generate/Require
Checksums*
None
don‘t use checksums
Bothway
generate/require checksums for tunneled packets in
both directions
Incoming
requires that all incoming packets have the correct
checksum
Outgoing
calculates checksums for outgoing packets
Use Key*
None: no keying will be used
String: use keyed GRE with key
(
either a number or an IP
address-like dotted quad)
Type of Service (TOS)
Inherit:
(Default)
Drop down menu:
set a fixed TOS on tunneled packets
Time to Live (TTL)
Inherit:
(Default)
Integer:
set a fixed TTL on tunneled packets.
(
range 1-255)
Path MTU Discovery
Enable/disable Path MTU Discovery on this tunnel.
Note
A fixed ttl is incompatible with this option: tunnelling
with a fixed ttl always makes pmtu discovery
Bind to Device
Bind the tunnel to the device
NAME
so that tunneled packets will
only be routed via this device.
*only GRE tunnels
5.10.2 Routing and Gateways
Using the Routing and Gateways menu you can define which router should be used to reach specific
hosts and networks. Here the units can also be configured as routers between different networks.
Command
Description
Default routes
Interface
Enter the interface for the route (e.g. eth0)
Gateway
Enter the gateway over which the network can be
reached
Act as router?
Yes
The unit operates as a router according to the
following list
No
The routing functionality is deactivated
Static routes
Interface
Enter the interface for the route (e.g. eth0)
Network
Enter the network that should be reached (e.g.
192.168.5.0)
Netmask
Enter the subnet mask of the network to be
reached (e.g. 255.255.255.0)