Configuring A Synchronous Serial Interface - HP MSR Router Series Configuration Manual

Configuring a synchronous serial interface

This section only describes the interface properties configuration. Depending on the network
requirements, you might also need to configure the data link layer protocol, DDR, IP address, firewall,
and interface backup.
To configure a synchronous serial interface:
Step
1. Enter system view.
2. Enter synchronous serial
interface view.
3. Configure a synchronous or
asynchronous serial interface
to operate as a synchronous
serial interface.
4. (Optional.) Set the interface
description.
5. Set the link layer protocol.
6. Set the digital signal coding
format.
7. Set the baud rate.
8. Set the clock selection mode.
9. (Optional.) Set transmit-clock
or receive-clock signal
inversion on the DTE side.
10. Set the MTU.
11. Set the CRC mode.
12. Set the number of interframe
filling tags.
13. (Optional.) Enable level
detection.
(Optional.) Enable data
14.
carrier detection (DCD).
15. (Optional.) Enable local
loopback.
Command
system-view
interface serial interface-number
physical-mode sync
description text
link-protocol { hdlc | ppp }
code { nrz | nrzi }
baudrate baudrate
virtualbaudrate virtualbaudrate
•
On DTE side:
clock { dteclk1 | dteclk2 |
dteclk3 | dteclk4 | dteclk5 |
dteclkauto }
•
On DCE side:
clock { dceclk1 | dceclk2 |
dceclk3 }
invert { transmit-clock |
receive-clock }
mtu size
crc { 16 | 32 | none }
itf number number
detect dsr-dtr
detect dcd
loopback
16
Remarks
N/A
N/A
By default, a synchronous or
asynchronous serial interface
operates as a synchronous serial
interface.
By default, the description of a
synchronous serial interface is
interface name Interface, for
example, Serial2/1/0 Interface.
The default is PPP.
The default is non-return-to-zero
(NRZ).
The default is 64000 bps.
Use the baudrate and
virtualbaudrate commands at the
DCE and DTE ends, respectively.
The default is dceclk1 for the DCE
side and dteclk1 for the DTE side.
By default, clock signal inversion is
disabled.
The default is 1500 bytes.
The default is 16-bit CRC.
The default is four.
By default, level detection is
enabled.
By default, DCD is enabled.
By default, local loopback is
disabled.