Configuring a standard POS interface

1. Enter system view.

system-view

N/A

2. Configure the packet statistics collection interval.

flow-interval interval

By default, the packet statistics collection interval is 300 seconds for an interface.

3. Enter standard POS interface view.

interface pos interface-number

N/A

4. (Optional.) Configure the interface description.

description text

By default, the description of a POS interface is interface name Interface, for example, Pos2/1/1 Interface.

5. Set the keepalive interval.

timer-hold seconds

The default setting is 10 seconds.

6. 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.

7. Set the clock mode.

clock { master | slave }

The default setting is slave.

8. Set the CRC length.

crc { 16 | 32 }

The default setting is 32 bits.

9. (Optional.) Set the loopback mode.

loopback { local | remote }

By default, loopback is disabled.

10. Configure the overhead bytes.

• Configure the C2 path signal label byte:flag c2 flag-value

• Configure the J0 regenerator section trace byte:flag j0 { sdh | sonet } flag-value

• Configure the J1 path trace byte:flag j1 { sdh | sonet } flag-value

By default:

• The C2 byte is 0x16.

• The system uses the SDH framing format.

• In SDH frames, both J0 and J1 bytes are empty strings.

11. (Optional.) Ignore CRC of the J1 byte.

flag j1 ignore

By default, CRC is performed for the J1 byte.

12. Set the framing format.

frame-format { sdh | sonet }

The default setting is SDH.

13. (Optional.) Enable payload scrambling.

scramble

By default, payload scrambling is enabled.

14. Set the data link layer protocol.

link-protocol { fr | hdlc | ppp | mfr }

The default setting is PPP.

Frame Relay is not supported for POS interfaces on a FIP-600(JG360A) card.

15. Set the MTU.

mtu size

The default setting is 1500 bytes.

16. (Optional.) Set the signal degrade (SD) or signal fail (SF) alarm threshold for the interface.

threshold { sd sdvalue | sf sfvalue } *

By default, the SD threshold is 10e to the power of negative 6 (10e^–6). The SF threshold is 10e to the power of negative 3 (10e^–3).

17. (Optional.) Configure the action to take when an RDI, SD, or SF alarm occurs on the POS interface.

alarm-detect { rdi | sd | sf } action link-down

By default, the device does not take any actions on the interface when an RDI, SD, or SF alarm occurs.

18. Set the rate of the interface.

speed speed-value

The default setting is 155 Mbps.

19. Set the physical state change suppression interval on the interface.

link-delay msec milliseconds

The default setting is 0 milliseconds.

20. (Optional.) Enable interface dampening on the interface.

dampening [ half-life reuse suppress max-suppress-time ]

By default, interface dampening is disabled on POS interfaces.

21. 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.

22. (Optional.) Restore the default settings for the POS interface.

default

N/A

23. Shut down and bring up the interface.

shutdown

undo shutdown

By default, a standard POS interface is up.

For the settings to take effect, you must perform this step.

If no cable is connected to the interface, shut down the interface to prevent interface exceptions.