3Com MSR 50 Series Configuration Manual page 243

Figure 42 Typical implementation diagram of Frame Relay over IP
Frame Relay
network
The frame relay packets transmitted through GRE tunnel fall into three categories:
FR packet and InARP packet, both of which have IP header encapsulated, and LMI
packet used to negotiate virtual circuit status in GRE tunnel.
Configuration procedure
Follow these steps to configure frame relay over IP network:
To do...
Enter system view
Create tunnel interface in system
view and perform corresponding
configuration on tunnel interface
Return to system view
Enable frame relay switching
Configure frame
relay switch
either by static
routes or by
PVC
c
CAUTION:
Before configuring frame relay over IP network, it is necessary to create and
■
configure tunnel interface. After the setup of a GRE tunnel interface, you can
specify the tunnel interface to be used by frame relay switching to implement
frame relay packets over IP network.
You need to configure static route for frame relay switching in frame relay
■
interface view or multilink frame relay (MFR) interface view at both ends of GRE
tunnel, or configure PVC for frame relay switching in system view. After frame
relay routes have been configured, two route entries will be added into the
IP network
Use the command...
system-view
For detailed information
about tunnel interface
configuration, refer to
Configuration" on page
1589.
quit
fr switching
Configure static interface interface-type
routes for frame interface-number
relay switching
fr dlci-switch in-dlci
in interface view
interface tunnel
interface-number dlci
out-dlci
Configure PVC fr switch name interface
for frame relay interface-type
switching in interface-number dlci dlci1
system view interface tunnel
interface-number dlci dlci2
fr switch name
undo shutdown
Configuring DTE Side Frame Relay
Frame Relay
network
Remarks
-
Required
"GRE
-
Required
-
Required
There is no static route for
frame relay switching by
default.
Required
There is no PVC for frame
relay switching by default.
Optional
Optional
After a PVC is created, its
status is up by default.
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