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Dell EMC Networking OS Configuration Guide for the S5048F–ON System 9.14.2.8

Load-Balancing Method

By default, LAG hashing uses the source IP, destination IP, source transmission control protocol (TCP)/user datagram protocol (UDP) port, and destination TCP/UDP port for hash computation. For packets without a Layer 3 header, Dell EMC Networking OS automatically uses load-balance mac source-dest-mac.

Do not configure IP hashing or MAC hashing at the same time. If you configure an IP and MAC hashing scheme at the same time, the MAC hashing scheme takes precedence over the IP hashing scheme.

To change the IP traffic load-balancing default, use the following command.

Replace the default IP 4-tuple method of balancing traffic over a port channel.
CONFIGURATION mode
[no] load-balance {ip-selection [dest-ip | source-ip]} | {mac [dest-mac | source-dest-mac | source-mac]} | {tcp-udp enable} {ingress-port}
You can select one, two, or all three of the following basic hash methods:

  • ip-selection [dest-ip | source-ip] — Distribute IP traffic based on the IP destination or source address.

  • mac [dest-mac | source-dest-mac | source-mac] — Distribute IPV4 traffic based on the destination or source MAC address, or both, along with the VLAN, Ethertype, source module ID and source port ID.

  • tcp-udp enable — Distribute traffic based on the TCP/UDP source and destination ports.

  • ingress-port — Option to Source Port Id for ECMP/ LAG hashing.

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