virtual-system

Function

The virtual-system command configures the virtual system ID for the IS-IS process. Without the ID, the extended LSPs are not generated. An IS-IS process can generate a maximum of 50 virtual system IDs.

The undo virtual system virtual-system-id command deletes the virtual system ID.

By default, no virtual system ID is configured for an IS-IS process.

Format

virtual-system virtual-system-id

undo virtual-system virtual-system-id

Parameters

Parameter	Description	Value
virtual-system-id	Specifies the virtual system ID for the IS-IS process.	It has 6 bytes (or 48 bits) in the format of XXXX.XXXX.XXXX.

Views

IS-IS view

Default Level

2: Configuration level

Usage Guidelines

This command is valid for all topologies in an IS-IS process.

Like the general ID, the virtual ID must be unique in the entire area.

The virtual-system command should be used together with the lsp-fragments-extend command. The configured virtual system ID can take effect only after LSP fragment extension is enabled and the IS-IS process is restarted by using the reset isis all command.

If neither LSP fragment extension is enabled nor the IS-IS process is restarted, the virtual system ID can be configured but cannot take effect.

Example

# Configure the virtual system ID as 2222.2222.2222 for IS-IS process 1.

<sysname> system-view
[sysname] isis
[sysname-isis-1] network-entity 10.0000.0000.0001.00
[sysname-isis-1] virtual-system 2222.2222.2222