Huawei v200r001 user manual No backup delay

User Manual - Configuration Guide (Volume 3)		Chapter 1
Versatile Routing Platform		Configuration of Backup Center
	Table LC-1-4Establish a corresponding relation between logical channel and virtual circuit or Dialer Map
	Operation	Command
	Specify a logical channel number for X.25 virtual circuit	x25 map protocol address x.121-address lin logic-
		channel-number
	Specify a logical channel number for frame relay virtual	frame-relay map protocol address dlci lin logic-
	circuit	channel-number
	Specify a logical channel number for Dialer Map	dialer map protocol next-hop-address dialer-string
		lin logic-channel-number

1.2.4 Setting Delay Time for Switchover Between Main and Backup Interface

When the state of the main interface changes from up to down, the system doesn’t switch to backup interface right away, but wait for a preset time delay instead. The system will switch to the backup interface only if the state of the main interface remains down after the delay time runs out; if the main interface recovers within the delay time, the system will not switch to the backup interface.

When the state of the main interface changes from down to up, the system doesn’t switch to the main interface right away, 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

To run following commands normally, user should run those commands firstly, which specify a physical interface or virtual interface template, or a certain logical channel, except Ethernet interface, to backup main interface (backup interface/logic- channel).

Please use the following command in the configuration mode of the main interface backed up.

Table LC-1-5Set the delay time for the switchover between main and backup interfaces

Operation	Command
Set the delay time for switchover between main and backup	backup delay enable-delay disable-delay
interfaces
Restore to the default value of the delay time for switchover	no backup delay
between main and the backup interfaces

Here, enable-delay is the delay time for the main interface to switch over to backup interface, the value ranges from 0 to 65535 seconds, and the default value is 0, indicating an immediate switchover. disable-delayis the delay time for backup interface to switch over to the main interface, the value ranges from 0 to 65535 seconds, and the default value is 0, indicating an immediate switchover.

1.2.5 Setting State-Judging Conditions for Logic-Channel Main Interface

When the main interface is a logical channel, the logical channel is regarded as down after a specified number of unsuccessful calls. After it switches over to the backup interface, regular inspections at specified time interval must be made on the state of the logical channel to check if it’s recovered its up state or not.

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