SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS
2.2.1.2 VRF Support
VLAN enabled routers often support the concept of VRFs (Virtual Router
Functions). Each VRF has its own routing table.
On the Newtec modem/modulator/demodulator, each VLAN belongs to a different
VRF, so this means that each VLAN has its own routing table.
The use of different VLANs as different VRFs makes it possible to implement fully
independent IP trunks to different remote sites, where the same (private) IP
addresses are used: the same IP addresses can be used for different destinations
in different VRFs.
2.2.1.3 Routing Tables
Traffic is always routed between the Ethernet network and the satellite link. Traffic
is never routed from the Ethernet link back to the Ethernet link or from the satellite
link back to the satellite link: there is a separate routing table from the Ethernet link
to the satellite and from the satellite to the Ethernet link.
The name for the routing table from Ethernet link to the satellite link: Ethernet RX
route table.
The name for the routing table from the satellite link to the Ethernet link:
Demodulator RX route table.
When VLAN support is enabled, this means that there is per VLAN, one routing
table towards the satellite link, and another routing table towards the Ethernet link.
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