Comtech EF Data SLM-5650A Vipersat Parameter Editor - Manual (Page 47)

Chapter 2 - Using Parameter Editor 2-31
Routing
In a Remote configuration, the default route will typically point to the satellite
modem (WAN) used for communications back to the Hub.
3. Enter the Destination IP Address, the number of Subnet Bits in the
subnet mask, the Description of the route (GW), the route Interface (LAN
or WAN), and either the Next Hop address (LAN interface) or the HDLC
Address (WAN interface). The system administrator can supply this infor-
mation, if necessary.
In a Hub role, for example, enter the name of the route (e.g., DFG), enter
0.0.0.0 for the destination IP address and 0 for the mask, select LAN for
Ethernet interface, then enter the IP address of the appropriate router or
modem for the next hop.
If this Hub unit is providing the TDM outbound, a route statement or
statements defining satellite communications with the Remote units must
be entered as well. One option is to enter a single super-route that will
handle satellite communications with all of the remote subnets.
4. Click on the Add button to add the new route to the table.
When one or more routes that appear in the list are selected, the Remove and
Modify buttons become active.
The Clear button is used to clear all routes from the list.
5. When all routes have been defined, click on OK to save the settings.
OSPF
The Vipersat OSPF (Open Shortest Path First) feature in the Comtech
SLM-5650A modem/router provides for dynamic routing functionality. Route
changes from the Hub are broadcast to the Remotes via a dedicated WAN-to-
WAN multicast address. Route changes from a Remote are unicast to the Hub.
Static routes that are manually entered into the route table by the operator are
separate from these dynamic routes and are not managed as part of the OSPF
system.
The support for OSPF functionality in the SLM-5650A modem causes routers
that are external and connected to the Vipersat satellite network to “see” the
entire SLM-5650A network as if it were a single router.
Click on the OSPF menu item that appears under Routing (except for Expan-
sion units) to access and configure the Open Shortest Path First settings for this
unit, as shown in figure 2-22.