Configuring convergence priorities for specific routes

A topology change causes IS-IS routing convergence. To improve convergence speed, you can assign convergence priorities to IS-IS routes. Convergence priority levels are critical, high, medium, and low. The higher the convergence priority, the faster the convergence speed.

By default, IS-IS host routes have medium convergence priority, and other IS-IS routes have low convergence priority.

To assign convergence priorities to specific IS-IS routes:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter IS-IS view.

isis [ process-id ] [ vpn-instance vpn-instance-name ]

N/A

3. Assign convergence priorities to specific IS-IS routes.

priority { critical | high | medium } { prefix-list prefix-list-name | tag tag-value }

By default, IS-IS routes, except IS-IS host routes, have the low convergence priority.