3Com Router 3031, Command Reference Manual

Page: 306 / 838

306 C
HAPTER
4: L
INK
L
AYER
P
ROTOCOL
Example
Enable the inverse address resolution at all PVCs of the Frame Relay interface
Serial1/0/0.
[3Com-Serial1/0/0] fr inarp
fr interface-type
Syntax
fr interface-type { dce | dte | nni }
undo fr interface-type
View
Interface view
Parameter
dte, dce and nni: Three types of Frame Relay interfaces.
Description
Using the fr interface-type command, you can set the Frame Relay interface type.
Using the undo fr interface-type command, you can restore the default Frame
Relay interface type.
By default, the frame relay interface type is DTE
In Frame Relay, there are two communicating parties, namely, the user side and
network side. The user side is called Data Terminal Equipment (DTE), and the
network side is called Data Communications Equipment (DCE). In a Frame Relay
network, the interface between the Frame Relay switches is Network-to-Network
Interface (NNI), and the corresponding interface adopts the NNI operating view. If
the device is used as Frame Relay switching, the Frame Relay interface should
operate in the NNI view or DCE mode. NE16E/08E/05 routers support the three
modes.
In NE16E/08E/05 routers, while configuring the Frame Relay interface type as DCE
or NNI, it is unnecessary to perform the fr switching command in the System view.
Please notice that this is different from Cisco.
For the related command, see link-protocol fr.
Example
Set the type of the frame relay interface Serial1/0/0 to DCE.
[3Com] interface Serial1/0/0
[3Com-Serial1/0/0] fr interface-type dce
fr iphc Syntax
fr iphc { nonstandard | rtp-connections number1 | tcp-connections number2 |
tcp-include }