H3C SR6602-X, Configuration Manual

Page: 22 / 65

15
Step Command Remarks
3. (Optional.) Configure the
interface description.
description text
By default, the description of a
synchronous serial interface is
interface name Interface , for
example, Serial1/1/0 Interface.
4. Set the link layer protocol.
link-protocol
{
fr
|
hdlc
|
ppp
|
mfr }
The default is PPP.
5. Set the digital signal coding
format.
code
{
nrz
|
nrzi
}
The default is non-return-to-zero
(NRZ).
6. Set the baud rate.
•
Set the baud rate on the
DCE side:
baudrate baudrate
•
Set the baud rate on the
DTE side:
virtualbaudrate
virtualbaudrate
The default is 64000 bps.
7. Set the clock selection mode
for the synchronous serial
interface.
clock { dteclk1 | dteclk2 |
dteclk3 | dteclk4 | dteclk5 |
dteclkauto }
By default, the DTE-side clock is
dteclk1 .
The dteclk5 keyword is not
supported in the current software
version.
8. (Optional.) Set transmit-clock
or receive-clock signal
inversion on the DTE side.
invert { transmit-clock |
receive-clock
}
By default, clock signal inversion
is disabled.
9. Set the MTU.
mtu
size The default is 1500 bytes.
10. Set the CRC mode.
crc { 16 | 32 | none } The default is 16-bit CRC.
11. Set the number of interframe
filling tags.
itf number number The default is four.
12. (Optional.) Enable level
detection.
detect dsr-dtr
By default, level detection is
enabled.
13. (Optional.) Enable data
carrier detection (DCD).
detect dcd By default, DCD is enabled.
14. (Optional.) Enable local
loopback.
loopback
By default, local loopback is
disabled.
15. Set the keepalive interval.
timer-hold seconds The default setting is 10 seconds.
16. Set the maximum number of
keepalive attempts.
timer-hold retry retries
The default setting is 5.
The interface determines that the
remote end is down if it does not
receive a keepalive response
after the maximum number of
keepalive attempts have been
made.
17. Set the line idle-code.
idle-code { 7e | ff } The default is 0x7E.
18. (Optional.) Enable RTS
signal reverse.
reverse-rts
By default, RTS signal reverse is
disabled.
19. (Optional.) Set the intended
bandwidth for the
synchronous serial interface.
bandwidth bandwidth-value
By default, the expected
bandwidth (in kbps) is the
interface baud rate divided by
1000.