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. |