H3C Technologies H3C SR8800 - Manual (Page 27)

20
Step Command Remarks
3. Configure the interface
description.
description text
Optional.
The default description is Interface
name Interface.
4. Set the cable length and
cable attenuation.
• cable long { 0db | -7.5db |
-15db | -22.5db }
• cable short { 133ft | 266ft |
399ft | 533ft | 655ft }
Optional.
The long 0db keywords apply by
default.
5. Set the line code format. code { ami | b8zs }
Optional.
The default is B8ZS
1 .
6. Set the clock mode. clock { master | slave }
Optional.
The default is slave, that is, line
clock.
7. Set the framing format. frame-format { esf | sf }
Optional.
The default is ESF.
8. Set the behavior of the
interface on the FDL in ESF
framing.
fdl { ansi | att | both | none }
Optional.
The default is none, meaning that
FDL is forbidden.
9. Enable loopback.
loopback { local | remote |
payload } Optional.
Disabled by default.
10. Send remote loopback control
code.
sendloopcode { fdl-ansi-llb-down |
fdl-ansi-llb-up | fdl-ansi-plb-down
| fdl-ansi-plb-up |
fdl-att-plb-down | fdl-att-plb-up |
inband-llb-down | inband-llb-up }
Optional.
No remote loopback control code
is sent by default.
11. Restore the default settings. default Optional.
12. Shut down the CT1 interface. shutdown
Optional.
A CT1 interface is enabled by
default.
13. Return to system view. quit N/A
14. Enter the view of the
synchronous serial interface
created on the CT1 interface.
interface serial
interface-number:set-number
N/A
15. Set the CRC mode. crc { 16 | 32 | none }
Optional.
By default, 16-bit CRC is adopted.
16. Set the MTU of the serial
interface.
mtu mtu
Optional.
1500 bytes by default
17. Set the keepalive transmission
interval.
timer hold seconds
Optional.
10 seconds by default
18. Configure the link layer
protocol of the serial
interface.
link-protocol { fr | hdlc | ppp }
Optional.
PPP by default.
Support for Frame Relay depends
on the daughter cards.