Configuring VF tracking
You can configure VF tracking in both standard mode and load balancing mode, but the function takes effect only in load balancing mode.
In load balancing mode, you can establish the collaboration between the VFs and NQA or BFD through the tracking function. When the state of the track entry transits to Negative, the weights of all VFs in the VRRP group on the router decrease by a specific value. When the state of the track entry transits to Positive or Notready, the original weight values of the VFs restore.
Configuration guidelines
By default, the weight of a VF is 255, and its lower limit of failure is 10.
When the weight of a VF owner is higher than or equal to the lower limit of failure, its priority is always 255. The priority does not change with the weight. When the upstream link of the VF owner fails, an LVF must take over as the AVF. The switchover happens when the weight of the VF owner drops below the lower limit of failure. This requires that the reduced weight for the VF owner be higher than 245.
Configuration procedure
To configure VF tracking:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Configure the VFs in a VRRP group to monitor a track entry and configure the reduced weight. | vrrp vrid virtual-router-id track track-entry-number { forwarder-switchover member-ip ip-address | priority reduced [ priority-reduced ] | switchover | weight reduced [ weight-reduced ] } | By default, no track entry is specified. |