Configuring Frame Relay Subinterface; Configuring Dte Side Frame Relay - 3Com MSR 50 Series Configuration Manual

Configuring Frame Relay
Subinterface
To do...
Set the type of interface for frame
relay switching to NNI or DCE
Configure Configure static
frame relay routes for frame
switching relay switching in
(either by interface view
configuring
static route or
PVC)
Configure PVC
for frame relay
switching in
system view
This section covers these topics:
"Overview" on page 235
■
"Configuration procedure" on page 239
■
Overview
The frame relay module has two types of interfaces: main interface and
subinterface. The subinterface is of logical structure, which can be configured with
protocol address and virtual circuit. One physical interface can include multiple
subinterfaces, which do not exist physically. However, for the network layer, the
subinterface and main interface make no difference and both can be configured
with virtual circuits to connect to remote devices.
The subinterface of frame relay falls into two types: point-to-point (P2P)
subinterface and point-to-multipoint (P2MP) subinterface. P2P subinterface is used
to connect a single remote device and P2MP subinterface is used to connect
multiple remote devices. A P2MP subinterface can be configured with multiple
virtual circuits, each of which sets up an address map with its connected remote
network address to distinguish different connections. Address maps can be set up
by manual configuration or dynamically set up by InARP.

Configuring DTE Side Frame Relay

Use the command...
fr interface-type { dce |
nni }
fr dlci-switch in-dlci
interface interface-type
interface-number dlci
out-dlci
quit
fr switch name interface
interface-type
interface-number dlci dlci1
interface interface-type
interface-number dlci dlci2
fr switch name
undo shutdown
241
Remarks
Required
The default frame relay
interface type is DTE, which
means the system disables
frame relay switching by
default.
Frame relay switching is
unavailable to DTEs.
Required
There is no static route
configured for frame relay
switching by default.
The arguments in-dlci and
out-dlci used for
configuring frame relay
switching must have been
configured on
corresponding interface.
-
Required
Optional
Enter frame relay switching
PVC view
Optional
Enable current switching
PVC