Configuring IS-IS PIC
Prefix Independent Convergence (PIC) enables the device to speed up network convergence by ignoring the number of prefixes.
When both IS-IS PIC and IS-IS FRR are configured, IS-IS FRR takes effect.
IS-IS PIC applies only to LSPs sent by neighbors.
Enabling IS-IS PIC
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. Enable PIC for IS-IS. | pic [ additional-path-always ] | By default, IS-IS PIC is enabled. |
Enabling BFD for IS-IS PIC
By default, IS-IS PIC does not use BFD to detect primary link failures. To speed up IS-IS convergence, enable BFD for IS-IS PIC to detect primary link failures.
To enable BFD control packet mode for IS-IS PIC:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Enable BFD control packet mode for IS-IS PIC. | isis primary-path-detect bfd ctrl | By default, BFD control packet mode is disabled for IS-IS PIC. |
To configure BFD echo packet mode for IS-IS PIC:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Configure the source IP address of BFD echo packets. | bfd echo-source-ip ip-address | By default, the source IP address of BFD echo packets is not configured. The source IP address cannot be on the same network segment as any local interface's IP address. For more information, see High Availability Command Reference. |
3. Enter interface view. | interface interface-type interface-number | N/A |
4. Enable BFD echo packet mode for IS-IS PIC. | isis primary-path-detect bfd echo | By default, BFD echo packet mode is disabled for IS-IS PIC. |