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FAQ:Why Is Outgoing Traffic Unbalanced After Packet-based Load Balancing Is Configured for Eth-Trunk on NE5000E at Site?

Publication Date:  2013-09-03 Views:  85 Downloads:  0
Issue Description
Question:
Outgoing traffic is unbalanced after packet-based load balancing is configured for the Eth-Trunk (containing three member links) on the NE5000E at a site.
Handling Process
N/A
Root Cause
N/A
Solution
Answer:
After confirmation with Huawei R&D personnel, 16 load balancing entries exist on the Eth-Trunk of the NE5000E. After packet-based balancing mode is configured, traffic is load balanced in proportion. Set the number of ports in the Eth-Trunk to 2 to the power of n (2, 4, 6, 8, or 16) so that traffic can be evenly load balanced. Three links exist at the site, forming 5:5:6 traffic.
eth-trunk21 up up 0% 0% 2959 0
gigabitethernet4/0/1 up up 26% 52% 0 0
gigabitethernet5/0/1 up up 27% 52% 0 0
gigabitethernet7/1/1 up up 24% 63% 0 0
Suggestions
When an Eth-Trunk and packet-based load balancing are configured, set the number of ports in the Eth-Trunk to 2 to the power of n so that traffic can be evenly load balanced.

END