HP MSR2000/3000/4000 Router Series Interface Configuration Guide

34
Configuring a POS interface
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter POS interface view.
interface pos interface-number N/A
3. Set the interface description.
description text
By default, the description of a
POS interface is interface name
Interface, for example, Pos5/0
Interface.
4. Set the polling interval.
timer-hold seconds The default setting is 10 seconds.
5. Set the clock mode.
clock { master | slave } The default setting is slave.
6. Set the CRC length.
crc { 16 | 32 } The default setting is 32 bits.
7. Set the loopback mode.
loopback { local | remote } By default, loopback is disabled.
8. Configure the overhead bytes.
flag c2 flag-value
By default, the C2 overhead byte is
0x16.
flag { j0 | j1 } { sdh | sonet }
flag-value
By default, the SDH framing
applies. In SDH framing, both J0
and J1 overhead bytes are null. In
SONET framing, the J0 overhead
byte is 0x01 and J1 overhead byte
is null.
9. Set the framing format.
frame-format { sdh | sonet } The default setting is SDH.
10. Configure scrambling.
scramble By default, scrambling is enabled.
11. Set the link layer protocol.
link-protocol { hdlc | ppp } The default setting is PPP.
12. Set the MTU.
mtu size The default setting is 1500 bytes.
13. Configure the expected
bandwidth of the interface.
bandwidth bandwidth-value
By default, the expected
bandwidth (in kbps) is the interface
baud rate divided by 1000.
14. Restore the default settings for
the POS interface.
default N/A
15. Shutdown or bring up the POS
interface.
• Shut down the POS interface:
undo shutdown
• Bring up the POS interface:
undo shutdown
By default, a POS interface is up.
When you modify parameters on a
POS interface, execute the
shutdown command and then the
undo shutdown command to make
your modifications take effect.
If no cable is connected to a
physical interface, shut down the
interface with the shutdown
command to prevent problems.
Use the shutdown command with
caution. Once an interface is shut
down, the interface stops
operating.