3Com 10014299 manual Channel to check whether it has recovered, Standby timer enable-delay seconds

	Configuring the Standby Center 649
Specify a logic channel number for frame	fr map protocol address dlci dlci
relay virtual circuit	logic-channel number
Specify a logic channel number for Dialer	dialer route protocol
Route	next-hop-address dialer-number
	logic-channel number

Setting the Delay Time When the state of the main interface changes from up to down, the system for Switchover between doesn't switch to a standby interface immediately, but waits for a preset time

Main and Standby delay instead. The system switches to the standby interface only if the state of the Interface main interface remains down after the delay times out. If the main interface

recovers within the delay time, the system will not switch to the standby interface.

Table 699 Set the Delay Time for the Switchover from the Main Interface to the Standby

Interface

Operation	Command
Set the delay time for the switchover from	standby timer enable-delay seconds
the main interface to the standby interface
Restore the default delay time for the	undo standby timer enable-delay
switchover from the main interface to the
standby interface

By default, the delay time for the switchover from the main interface to the standby interface is 0 second, meaning that the switchover is instanteous.

When the state of the main interface changes from down to up, the system doesn't switch to the main interface immediately, but wait for a preset time delay instead. The system will switch back to the main interface only if the state of the main interface remains 'up' after the delay time runs out; if the main interface restores its down state again within the delay time, the system will not switch to the main interface.

Perform the following configurations in the view of the backed up main interface.

Table 700 Set the Delay Time for the Switchover from the Standby Interface to the Main

Interface

Operation	Command
Set the delay time for the switchover from	standby timer disable-delay seconds
the standby interface to the main interface
Restore the default delay time for the	undo standby timer disable-delay
switchover from the standby interface to
the main interface

By default, the delay time for the switchover from the standby interface to the main interface is 0 second, meaning that the switchover is instanteous.

Setting State-judgingWhen the main interface is a logic channel, the logic channel is regarded as down Conditions of the Logic after a specified number of unsuccessful calls. After it switches over to the standby Channel State interface, regular inspections at specified time intervals must be made on the logic

channel to check whether it has recovered.

If the main interface has multiple standby interfaces, of which one is a logic channel, it's necessary to judge whether the logic channel is down or up before opening it. If it is down, open the standby interface with the second highest