Network Router User Manual

Chapter 4 - MultiFRAD Software

We now have WAN IP address 200.2.11.1 from the IP protocol stack mapped to DLCI 17. Let’s say

we also want to map a data channel to DLCI 17. The data ports that are already mapped to other

DLCIs are grayed out. In our example, lets map data port 3to DLCI 17. Simply click on Port 3 in the

Data Port Mappings group and an X appears in the box at the left of Port 3. Now we have both data

port 3 and IP WAN address 200.2.11.1 mapped to DLCI 17. The MultiFRAD allows multiple sources

of data to be mapped to the same DLCI because the MultiFRAD multiplexes all the data onto the

DLCI. In other words, bandwidth for that DLCI is shared by all the data sources mapped to the DLCI.

Of course this means that all the data sources must go to the same remote site, since the frame relay

network will send all data on DLCI 17 to the same place.

An example of a typical application taking advantage of this “Multiplexed DLCI” configuration follows:

MultiFRAD 3000-Series

Frame Relay Network

DLCI17

MMH900

Frame Relay

Composite

Link

LAN

File

Server

Unix

etc.

(Terminals)

(PCs)

Frame Relay

Composite

Link

(In this example, the MultiFRAD is introduced to allow significant cost savings over traditional leased

lines or point-to-point routers.)

Because the MultiFRAD can map both data ports and LAN traffic onto one DLCI, multiple DLCIs from

point A to point B are not needed.