shutdown (BGP multi-instance view)

Function

The shutdown command terminates all sessions between a device and its BGP peers.

The undo shutdown command restores all sessions between a device and its BGP peers.

By default, the function of terminating all sessions between a device and its BGP peers is disabled.

Format

shutdown

undo shutdown

Parameters

None

Views

BGP multi-instance view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

Running this command causes all BGP peers unable to establish sessions. Exercise caution when using this command.

During the system upgrade, or maintenance, you can run the shutdown command to terminate all sessions between a device and its BGP peers to prevent possible BGP route flapping from affecting the network. After the system upgrade, or maintenance, run the undo shutdown command to restore the sessions. If a large number of BGP sessions exist, terminating BGP sessions one by one using the peer ignore command is inefficient. Running the shutdown command in the BGP view terminates all BGP sessions at one time.

Although BGP sessions take effect only after you run the commit command in two-phase validation mode, the shutdown command is necessary in the following situations:

The two-phase validation mode is changed to the immediate validation mode.
Some configurations have been committed.
The script files are used for the upgrade or maintenance.

Precautions

In VS mode, this command is supported only by the admin VS.

Example

# Terminate all sessions between the device and its BGP peers.

<HUAWEI> system-view
[~HUAWEI] bgp 100 instance a
[*HUAWEI-bgp-instance-a] shutdown