Frame Relay Subinterfaces; Configuring Subinterfaces - Lucent Technologies PortMaster 4 Configuration Manual

Frame Relay Subinterfaces

Frame Relay Subinterfaces
PortMaster routers support a feature called DLCI bundling to allow the splitting of one
synchronous port with multiple DLCIs into a maximum of 32 Frame Relay
subinterfaces. In this configuration, the DLCIs are divided between the subinterfaces
through the use of the location table and the DLCI table. Each subinterface must have
its own subnet or assigned network. The PortMaster has a limit of 512 total active
interfaces, which can be further limited by available memory.
The port you are configuring must be set for network hardwired use and Frame Relay,
and must be in the same dial group as the location.

Configuring Subinterfaces

The following sections describe how to configure a Frame Relay subinterface.
Adding a Location
To configure a Frame Relay subinterface, you add a location for each interface, configure
it with the frame protocol, and associate it with a dial group. Then associate a
synchronous port with the same dial group. For example, to create a location called
sub1, enter the following commands:
Command> add location sub1
Command> set location sub1 protocol frame
Command> set location sub1 group 1
Command> set W1 group 1
The rest of the location table entries are set as described in Chapter 7, "Configuring
Dial-Out Connections," including setting an IP address, routing, and filtering for each
interface.
Creating a DLCI Entry
The next step in configuring the subinterfaces is to create an entry in the DLCI table.
Entries can be followed with an optional IP address or hostname. The keyword ipxdlci
is available for IPX networks.
Note – The PortMaster 4 supports the IPX protocol if its running ComOS 4.1 or later.
ComOS 4.0 does not support the IPX protocol.
To create a DLCI table entry for the subinterface sub1, enter the following commands:
Command> add ipdlci sub1 16
Command> add ipdlci sub1 19 192.168.2.19
Command> add ipdlci sub1 20 192.168.2.20
Command> add ipxdlci sub1 21 0e0a001e
To remove an entry, enter the following commands:
Command> delete dlci sub1
Command> delete ipxdlci sub1 21
12-8 PortMaster 4 Configuration Guide