Configuring Frame Relay Over Ip Network - 3Com MSR 50 Series Configuration Manual

242 C 8: F
HAPTER RAME
Configuring Frame Relay
over IP Network
R C
ELAY ONFIGURATION
The methods to configure virtual circuit and address map for P2P subinterfaces
and P2MP subinterfaces are different, as described below.
P2P subinterface
■
Since there is only one peer address for a P2P subinterface, the peer address is
determined when a virtual circuit is configured for the subinterface. You therefore
do not need to configure dynamic or static address map for P2P subinterface.
P2MP subinterface
■
For a P2MP subinterface, a peer address can be mapped to the local DLCI through
static address mapping or InARP which only needs to be configured on the main
interface. If static address mapping is required, it is necessary to set up static
address map for each virtual circuit.
Configuration procedure
Follow these steps to configure frame relay subinterface:
To do...
Enter system view
Create a subinterface and
enter subinterface view
Configure virtual circuit on
frame relay subinterface
Set up address map
This section covers these topics:
"Overview" on page 235
■
"Configuration procedure" on page 239
■
Overview
With the increasingly wide application of IP network, internetworking of frame
relay networks needs to be realized through Frame Relay over IP, which creates
generic routing encapsulation (GRE) tunnel between frame relay networks at two
ends and transmits frame relay packets through the GRE tunnel, as illustrated
below:
Use the command...
system-view
interface interface-type
interface-number.subnumber
[ p2mp | p2p ]
See "Configuring Frame Relay
Local Virtual Circuit" on page
239
See "Configuring Frame Relay
Address Mapping" on page
239
Remarks
-
Required
The type of a frame relay
subinterface is p2mp by
default.
Required
Optional
For P2MP subinterface, it is
required to set up address
map.