Arista DCS-7060CX-32S supports symmetrical hashing for LAG. We can use the following command to check the current hash function and fields enabled
switch#show port-channel load-balance trident fields.
To change the hash fields we can use the following command
switch(config)#port-channel load-balance trident fields ? ---> this gives the list of possible fields
gre Configure which GRE fields are inputs to the port channel hash
ip Configure which fields are inputs to the port channel hash for IP packets
ipv6 Configure which fields are inputs to the port channel hash for IPv6 packets
mac Configure which MAC fields are inputs to the port channel hash
mac-in-mac Configure which MAC-in-MAC fields are inputs to the port channel hash
mpls Configure which MPLS fields are inputs to the port channel hash
For example, By configuring to hash just the Source-IP, We enable the hashing source IP address and the other configurable IP fields are disabled:
switch(config)#port-channel load-balance trident fields ip source-ip
switch(config)#show port-channel load-balance trident fields
Hash seed is 0
Hash function is CRC32HI
Hash offset is 16
.....
IP protocol field hashing is ON
IP source address hashing is ON
IP destination address hashing is OFF
IP TCP/UDP source port hashing is OFF
IP TCP/UDP destination port hashing is OFF
IP TTL hashing is OFF
IP symmetric hashing is OFF
.....
Hope this answers your query. In case you have any additional questions or need any further clarifications, please feel free to reach out to support@arista.com
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