virtual-access enable

Function

The virtual-access enable command configures an existing IS-IS process as a virtual access IS-IS process.

The undo virtual-access enable command restores the virtual access IS-IS process to a common IS-IS process.

By default, no IS-IS process is configured as a virtual access IS-IS process.

Format

virtual-access enable

undo virtual-access enable

Parameters

None

Views

IS-IS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

Virtual access uses extended IS-IS to collect network topology information. A virtual access IS-IS process can be automatically or manually established.

Manual establishment: To plan IS-IS processes, perform the following operations:
- Run the isis command to create an IS-IS process.
- Run the virtual-access enable command to configure the process as a virtual access IS-IS process.
Automatic establishment: After you globally enable virtual access on a device, the device checks whether a virtual access IS-IS process exists. If a virtual access IS-IS process exists, the device enables only virtual access.

Prerequisites

An IS-IS process has been created using the isis command.

Example

# Configure IS-IS process 1 as a virtual access IS-IS process.

<HUAWEI> system-view
[~HUAWEI] isis 1
[*HUAWEI-ISIS-1] virtual-access enable