Comtech EF Data CDD-56X Series Vipersat - Manual (Page 30)

Initial Configuration MN/22137, rev 1
2-8 Vipersat CDD-56X Series User Guide
By putting the one route statement “Remotes 172.16.128.0/17 Wan to Sat” in
the TDM Hub modem, and by using the route statement “GW 0.0.0.0/0 Wan to
Sat” at each of the remote modems, the network will successfully route packets.
The remotes can then be sub-netted as class C networks or below. Additional
routers at the remotes can be added for unusually large sites, allowing an addi-
tional layer of NAT without requiring any more explicit routing within the
Vipersat Modem/Routers.
Refer to the CDD-564L Installation and Operation Manual for additional infor-
mation on entering routes.
Creating the Routes
The following procedure outlines the basic route structure that the target
CDD-56X will require for its role in the network. One of the key routes that
must be created is a gateway address for routing the data traffic that is received
by the unit.
1. From the Main Menu shown in figure 2-1, select Route Table by entering
R at the command prompt.
2. From the Configuring the Route Table screen shown in figure 2-7, enter
1 at the command prompt to set the first route that will define the default
gateway.
In a Hub configuration, the default gateway will typically point to a router
on the same LAN as the CDD-56X Hub unit.
In a Remote configuration, the default route will typically point to the
satellite modem used for communications back to the Hub.
3. When prompted, enter the Route Name (GW), the IP Address, the
Number of Bits in the subnet mask, the Route Interface (Ethernet or Sat-
ellite), and the Next Hop address. The system administrator can supply
this information, if necessary.
In a Hub role, for example, enter the name of the route (e.g., GW), enter
0.0.0.0 for the destination IP address and 0 for the mask, enter E for
Ethernet interface, then enter the IP address of the appropriate router or
modem for the next hop.