[All About Switches] Q&A: Why Is Traffic Unevenly Load Balanced in Link Aggregation?

Created May 28, 2018 20:41:26Latest reply May 28, 2018 23:01:27 318 1 0 0

A: In practical services, you need to configure a proper load balancing mode based on traffic characteristics. When a parameter of traffic changes frequently, you can set the load balancing mode based on this parameter to ensure that the traffic load is balanced evenly.


For example, if IP addresses in packets change frequently, use the load balancing mode based on dst-ip, src-ip, or src-dst-ip so that traffic can be properly load balanced among physical links. If MAC addresses in packets change frequently and IP addresses are fixed, use the load balancing mode based on dst-mac, src-mac, or src-dst-mac so that traffic can be properly load balanced among physical links.


If the majority of service traffic are MPLS packets, you need to set the enhanced load balancing mode. You can run the mpls field command in the load balancing profile view to configure the load balancing mode of MPLS packets.


On a network where an Eth-Trunk and a stack or a CSS is configured, if an Eth-Trunk interface is configured to preferentially forward local traffic, traffic arriving at the local device is preferentially forwarded through Eth-Trunk member interfaces of the local device. If there is no Eth-Trunk member interface on the local device, traffic is forwarded through Eth-Trunk member interfaces on another device. This forwarding mode effectively saves bandwidth resources of member devices in the stack or CSS and improves traffic forwarding efficiency.

This post was last edited by All_About_Switch at 2018-5-28 20:47.
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wissal     Created May 28, 2018 23:01:27 Helpful(0) Helpful(0)

useful document, thanks
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