These are the two methods of multimode vif load balancing. IP address load balancing is recommended for use with dynamic multimode vifs.
In both of these methods, the last byte of the source and
destination address (IP address and MAC address) is used to
determine the interface to use for the outgoing frame. The
following formula is used:
((source_address XOR destination_address) %
number_of_links)
If the result of this formula maps to an interface that is not
in the UP link-state, the next active interface is used.
For example, a vif consisting of eight physical interfaces is
created with the IP address-based load-balancing method. It is
configured with IP address 10.0.0.10. Based on the above formula,
an IP frame going through this vif to the destination IP address
172.26.15.224 will use interface #2, provided that this interface
is in the UP link-state.
Note: - Do not select the MAC-address based load-balancing method when
creating vifs on a storage system that connects directly to a
router. In such a setup, for every outgoing IP frame, the
destination MAC address will be the MAC address of the router. As a
result, only one interface of the vif will be used.
- IP-address load balancing works in the same way for both IPv4 and IPv6 addresses.
