Huawei v200r001 Configuring Routes for Main and Backup Interfaces, Backup state-down number

User Manual - Configuration Guide (Volume 3)	Chapter 1
Versatile Routing Platform	Configuration of Backup Center

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 logical channel

Table LC-1-6Set the state-judging conditions when the main interface is a logical channel

Operation	Command
Set the condition for judging the logical channel as down: the logical channel	backup state-down number
is regarded as down after the specified number of unsuccessful calls.
After system switches to backup interface, interval-time is set to make regular	backup state-up interval-time
inspections so as to check whether the original logical channel has recovered
its “up” state.

By default, the number of call and state checking interval-time are not configured.

1.2.6 Setting State-Judging Conditions for Logic-Channel Backup Interface

If the main interface has multiple backup interfaces of which one is a logical channel, it’s necessary to judge whether the logical channel is down or up before opening it. If it is down, open the hypo-higher priority backup interface in an order of priority; after the logical channel changes to up, it’s required to switch from the hypo-higher priority backup interface of a low priority to this logical channel.

To run following commands normally, the command that specifies logical channel backup main interface (backup logic-channel) must be ran at first.

Please use the following commands in the configuration mode of the logical channel

Table LC-1-7Set the state-judging conditions when the backup interface is a logical channel

Operation	Command
Set the condition for judging the backup logical channel as down: the backup	backup state-down number
logical channel is regarded as down after the specified number of
unsuccessful calls.
Interval-time is set to make regular inspections so as to check if the backup	backup state-up interval-time
logical channel has restored to the up state or not.

By default, the number of call and state checking interval-time are not configured.

1.2.7 Configuring Routes for Main and Backup Interfaces

By using command ip route in the global configuration mode, it is possible to configure routes to the destination network segment through the main interface and all the backup interfaces. Please refer to relevant chapters of “Network Protocol Configuration” in this manual for details about the command ip route.

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