upgrade backup-area slot

Function

The upgrade backup-area slot command defines the active and backup areas in a stack in preparation for a smooth upgrade.

Format

upgrade backup-area slot slot-id to slot-id

Parameters

Parameter	Description	Value
slot-id	Specifies the stack ID of a member switch.	The value is an integer that ranges from 0 to 8.

Views

System view

Default Level

3: Management level

Usage Guidelines

Usage Scenario

Before upgrading a reliable stack with uplinks and downlinks working in redundancy mode, you can divide the stack into an active area and a backup area for redundancy. Member switches in the two areas can then be upgraded in turns. When member switches in one area are being upgraded, traffic is transmitted to member switches in the other area.

Precautions

Member switches in the active and backup areas form the entire stack. When dividing active and backup areas, note that:
- The active and backup areas cannot have the same member switch, and both areas must have at least one member switch.
- The backup area cannot contain the master switch of the stack.
- Member switches in each area must be directly connected.
After this command is run, the member switches with specified stack IDs join the backup area. The other member switches automatically join the active area.
To ensure mutual backup, it is recommended that the two areas have similar quantities of member switches.

Example

# Add member switches with stack IDs 0 to 3 to the backup area.

<HUAWEI> system-view
[HUAWEI] upgrade backup-area slot 0 to 3