Nortel Networks 8000 - Manual (Page 86)

Nortel Secure Router 8000 Series
Configuration -WAN Access 4 POS and CPOS interface configuration
The system view appears.
Step 2 Run:
interface serial interface-number
The synchronous serial interface view appears.
Step 3 Run:
link-protocol { ppp | fr | hdlc | lapb | x.25 | sdlc }
The command configures the link layer protocol.
By default, the synchronous serial interface uses PPP as the link layer protocol.
OQ NOTE
Only the synchronous interface channelized by the CPOS interface of the RTP1CPE1 and RTP1CPT1
interface cards supports the PPP and the HDLC protocols.
—End
4.5.4 Configuring hold-interval of the link layer protocol for
synchronous serial interface
Do as follows on the routers:
Step 1 Run
system-view
The system view appears.
Step 2 Run:
interface serial interface-number
The synchronous serial interface view appears.
Step 3 Run:
timer hold hold-interval
The command configures the hold-interval of the link layer protocol.
The two ends on the link send the timer hold packets to detect and maintain the
interconnection of the link.
By default, the hold-interval of the link layer protocol is 10 seconds. If the hold-interval is
configured as 0, it indicates that the hold packets are no longer sent or detected.
—End
4.5.5 Checking the configuration
Run the following commands to check the previous configuration.
Issue 5.3 (30 March 2009) Nortel Networks Inc. 4-25