The default link status polling interval is 10 seconds on a POS interface.
The two ends of a link must use the same link status polling interval.
Setting the link status polling interval to zero disables link status check.
Examples
# Set the link status polling interval to 100 seconds on POS 7/1/2.
<Sysname> system-view
[Sysname] interface Pos 7/1/2
[Sysname-Pos7/1/2] timer hold 100
50