3Com 3031 Command Reference Manual page 290

290 C 4: L L P
HAPTER INK AYER ROTOCOL
Description
Using the link-protocol hdlc command, you can configure the interface
encapsulation as HDLC. HDLC is a link layer protocol and can bear network layer
protocols, such as IP and IPX.
By default, the interface is encapsulated with PPP.
For the related commands, see timer hold and display interface.
Example
Configure HDLC encapsulation on interface Serial1/0/0.
[3Com-Serial1/0/0] link-protocol hdlc
timer hold
Syntax
timer hold seconds
undo timer hold
View
Interface view
Parameter
seconds: Value of the polling interval. The value is in the range from 0 to 32767 in
seconds. 0 indicates that the link detection function is disabled.
Description
Using the timer hold command, you can set the polling interval. Using the undo
timer hold command, you can restore the default value of the polling interval.
By default, the value of seconds is 10 seconds.
The polling interval should be set to equal at the two ends of the data link. A zero
polling interval set in both ends will close the polling operation of the data link.
For the related command, see display interface.
Example
Set the value of polling interval on interface Serial1/0/0 to 100 seconds.
[3Com-Serial1/0/0] timer hold 100