IS-IS Configuration Overview

To configure IS-IS:

1. Enable IS-IS if your router is in secure context.

   [edit]user@host# set security forwarding-options family iso mode packet-based
   Junos OS security processing is not applied to IS-IS packets forwarded by the router. By default in secure context, the router drops IS-IS packets.
2. Obtain ISO addresses for participating routers in the autonomous system (AS).
3. Configure security filters. See Security Policies Overview in the Junos OS Security Configuration Guide.
4. Configure IS-IS. See Example: Configuring IS-IS.
5. (Optional) Configure designated routers. Configuring IS-IS Designated Routers (CLI Procedure).

Related Topics

• Junos OS Feature Support Reference for SRX Series and J Series Devices
• IS-IS Overview
• Verifying the IS-IS Configuration
• Configuring IS-IS in the Junos Routing Protocols Configuration Guide
• Minimum IS-IS Configuration in the Junos Routing Protocols Configuration Guide