Types of vifs
You can create three different types of vifs on your storage system: single-mode vifs, static multimode vifs, and dynamic multimode vifs.
Each vif provides different levels of fault tolerance. Multimode vifs provide methods for load balancing network traffic.
Starting with Data ONTAP 7.3.1, IPv6 supports both single-mode and multimode vifs.
- Single-mode vif
In a single-mode vif, only one of the interfaces in the vif is active. The other interfaces are on standby, ready to take over if the active interface fails. All interfaces in a single-mode vif share a common MAC address.
- Static multimode vif
The static multimode vif implementation in Data ONTAP is in compliance with IEEE 802.3ad (static). Any switch that supports aggregates, but does not have control packet exchange for configuring an aggregate, can be used with static multimode vifs.
- Dynamic multimode vif
Dynamic multimode vifs can detect not only the loss of link status (as do static multimode vifs), but also a loss of data flow. This feature makes dynamic multimode vifs compatible with high-availability environments. The dynamic multimode vif implementation in Data ONTAP is in compliance with IEEE 802.3ad (dynamic), also known as Link Aggregation Control Protocol (LACP).