The trunk multicast load-balance hash-mode multicast-member command configures multicast group- and trunk sub-interface-based multicast load balancing using the hash algorithm.
The undo trunk multicast load-balance hash-mode multicast-member command restores the default configuration.
By default, the device implements group-based multicast load balancing using the hash algorithm.
Usage Scenario
If multicast traffic is transmitted over trunk outbound interfaces, by default the device implements group-based multicast load balancing on trunk member interfaces using the hash algorithm. Therefore, if two or more multicast flows belong to the same multicast group but have different outbound sub-interfaces of a trunk interface, the device will select the same trunk member interface for traffic forwarding. This may overburden some trunk member interfaces. To resolve this issue, run the trunk multicast load-balance hash-mode multicast-member command to implement group- and trunk sub-interface-based multicast load balancing using the hash algorithm. Then, if two or more multicast flows belong to the same multicast group but have different outbound sub-interfaces of a trunk interface, the device will select different trunk member interfaces for traffic forwarding.
Precautions
After the trunk multicast load-balance hash-mode multicast-member command is run, a few packets are dropped, or a few packets are re-sent.
After the trunk multicast load-balance hash-mode multicast-member command is run, if trunk member interfaces change, there will be a longer time for packet loss or excess packets. Therefore, you are advised to use this command only when the trunk links are stable and a high requirement is posed on the hash result.In VS mode, this command is supported only by the admin VS.