CDM-840 Remote Router MN-CDM840
Appendix L Revision 3
L–10
not necessary. However, any subnets that are past a router at the target remote must be
entered as external subnets.
6. Mesh Setup Based on ToS Detection: The detection by a CDM-840 Remote Router of a ToS
stamped packet can provide the means for setting up a SHOD mesh connection from that
remote to another remote within the network.
For these SHOD connections, it is assumed that each remote site that is part of
the SHOD connection has, at minimum, one CDD-880 Expansion Unit.
When a Remote site CDM-840 detects a packet that has been stamped with a ToS value that
matches the user defined value, the CDM-840 then sends a switch request to the VMS,
requesting the user defined bandwidth. The switch request also contains the address that
the ToS stamped packet was destined for.
The VMS processes the switch request and compares the destination address to the list of
known subnets to determine if the destination belongs to another remote within the
network. If the address does belong to another remote, the VMS will look for available
hardware and bandwidth, and then issue tuning commands to set up the connection. Each
direction of the mesh is set up independently; i.e., the detection that occurs at Remote 1
establishes a connection from Remote 1 to the other remote involved. However, the other
remote must perform detection for set up in the opposite direction, thus creating a full
duplex mesh connection.
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