R3303-HP HSR6800 Routers Interface Configuration Guide

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Configuring WAN interfaces
In terms of link type, wide area networks (WANs) include Frame Relay (FR) and ATM. Routers are
designed with the synchronous serial interface, ATM interface, and CE1 interface.
The system supports the synchronous serial interface, CE1 interface, CT1 interface, CE3 interface, and
CT3 interface.
Configuring a synchronous serial interface
A synchronous serial interface has the following features:
• Operates in either DTE or DCE mode. Typically, the synchronous serial interfaces on the device are
used as DTE to accept the clock provided by DCE.
• Supports various types of cables, including V.24, V.35, X.21, RS449, and RS530. The device can
automatically detect the type of connected cables and select electrical properties. In most cases,
you do not need to configure them manually.
• Supports link layer protocols such as PPP and FR.
• Supports IP for the network layer.
To display the cable type, operating mode (DTE or DCE), and other settings of synchronous serial
interfaces, use the display interface serial command.
To configure a synchronous serial interface:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter synchronous serial
interface view.
interface serial interface-number N/A
3. Set the interface description.
description text
Optional.
By default, the description of a
synchronous serial interface is
interface name Interface, for
example, Serial1/2/0 Interface.
4. Set the link layer protocol.
link-protocol { fr | hdlc | ppp }
Optional.
The default is PPP.
5. Set the digital signal coding
format.
code { nrz | nrzi }
Optional.
The default is non-return-to-zero
(NRZ).
6. Set the baud rate.
baudrate baudrate
virtualbaudrate virtualbaudrate
Optional.
The default is 64,000 bps.