A balancing method and device for load sharing of multicast packets

Abstract

The present invention provides a balancing method and device for multicast message load sharing, so that when a switch receives a multicast message through a first port on a local ingress interface board, it carries the designated LBN allocated for the first port In the multicast message and sent to the local outbound interface board; and receive the multicast message through the second port on the local outbound interface board, determine the group used to forward the received according to the specified LBN carried in the received multicast message The third port of the broadcast message, and then delete the specified LBN from the received multicast message and forward it through the third port. Therefore, the present invention can use the LBN instead of carrying out load sharing through the message characteristics of the multicast message, so that the egress bandwidth on the egress interface board can be utilized with maximum efficiency, and the load balancing at the egress can be ensured.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a balancing method and device for multicast message load sharing. Background technique [0002] In the current distributed switch, the inbound interface board and the outbound interface board are composed of multiple line card boards. After the traffic enters the ingress line card board of the inbound interface board, it is forwarded to the Each egress line card of the interface board. [0003] For the forwarding of multicast packets in video surveillance scenarios, a multicast port group is usually set on the ingress interface board so that multiple member ports of the multicast port group can receive uplink multicast packets; Generally, an aggregation port group is set, and the above-mentioned multicast packets are usually hash calculated according to the traffic characteristics, and then according to the hash result, the outgoing port in the aggregation port group is s...

AI Technical Summary

Problems solved by technology

[0004] However, the load sharing method based on the hash of traffic characteristics, for example, when performing hash calculation based on the IP address or quintuple information of the multicast message, the calculation result will depend heavily on the change of the multicast message, and the load sharing result cannot be controlled. The degree of balance, especially in the case of relatively few multicast packets, cannot guarantee that the result of sharing is relatively balanced, and it is easy to cause some outbound ports to be congested and some outbound ports to be relatively idle

Load imbalance will lead to link congestion and packet loss, which will affect the user experience of multicast video, a very important service

[0005] At present, some chip manufacturers provide some technologies that can achieve relatively balanced load, such as DLB, DBM, etc., but they are only effective for unicast packets. For multicast load sharing and balancing methods, chip manufacturers currently have no optimization solutions

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