Logical System Configuration Overview

Configuring a logical system consists of a sequence of tasks, some of which can only be performed by you as the master administrator—a JUNOS user with superuser configuration and verification privileges on the router. Other tasks can be performed by a logical system administrator—a JUNOS user that you have assigned to the logical system and is thereby granted configuration and verification privileges for only the logical systems to which that user is assigned. The following sequence summarizes the steps required to configure a logical system:

1. To configure a logical system, you (as the master administrator) first specify a logical-system-name at the [edit logical-systems] hierarchy level.
2. For any logical system, you (as the master administrator) can assign one or more logical system administrators. To configure logical system administrators, include the logical-system logical-system-name statement at the [edit system login class class-name] hierarchy level.
3. The minimum configuration of a logical system includes one or more logical interfaces. Before any logical interfaces can be assigned to a logical system, though, you (as the master administrator) must configure physical interface properties (such as encapsulation types and interfaces-related options) on the main router. To configure physical interface properties on the main router, include the physical interface statements at the [edit interfaces interface-name] hierarchy level.
4. After the physical interface properties are configured on the main router, logical system configurations can be completed by assigning one or more logical interfaces to each logical system. For any logical system, either you or a logical system administrator of that logical system can assign logical interfaces. To configure, include the unit statement at the [edit logical-systems logical-system-name] hierarchy level.

   Note: After you assign a logical interface to a logical system, it is considered part of the logical system. As such, any logical interface can be assigned to only one logical system.

For additional information about logical system configuration and administration, see the JUNOS Feature Guide and the JUNOS System Basics Configuration Guide.

For additional information about logical system interface configuration, see the JUNOS Network Interfaces Configuration Guide and the JUNOS Services Interfaces Configuration Guide.

Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice.