Dell S6100 Configuration Manual page 312

The preceding anti-polarization techniques require some coordinated configuration of network nodes to solve the problem and these
techniques are not scalable when the number of tiers in the network is high. Flow based hashing specifically addresses this using Macro
flow-based Hash function. It facilitates a dynamic hash function selection across different nodes in a network on a macro flow basis, thus
reducing unfair distribution of bandwidth between members and starvation.
Selection of Algorithms is available under flow-based-hashing enabling another level of randomness in hash selection. CLI to enable flow-
based hashing is shown in the given example:
Dell_GW1(conf)#hash-algorithm ecmp flow-based-hashing ?
crc16
crc16cc
crc32MSB
crc32LSB
xor1
of xor1
xor2
of xor2
xor4
of xor4
xor8
of xor8
xor16
Example to view show hash-algorithm:
Dell(conf)#hash-algorithm ecmp flow-based-hashing crc16
Dell(conf)#end
Dell#show hash-algorithm
Hash-Algorithm
linecard 0 Port-Set 0
Seed 185270328
Hg-Seed 185282673
EcmpFlowBasedHashingAlgo- crc16
EcmpAlgo- crc32MSB
312 Equal Cost Multi-Path (ECMP)
CRC16_BISYNC - 16 bit CRC16-bisync polynomial(default)
CRC16_CCITT - 16 bit CRC16 using CRC16-CCITT polynomial
CRC32_UPPER - MSB 16 bits of computed CRC32
CRC32_LOWER - LSB 16 bits of computed CRC32
CRC16_BISYNC_AND_XOR1 - Upper 8 bits of CRC16-BISYNC and lower 8 bits
CRC16_BISYNC_AND_XOR2 - Upper 8 bits of CRC16-BISYNC and lower 8 bits
CRC16_BISYNC_AND_XOR4 - Upper 8 bits of CRC16-BISYNC and lower 8 bits
CRC16_BISYNC_AND_XOR8 - Upper 8 bits of CRC16-BISYNC and lower 8 bits
CR16 - 16 bit XOR]
LagAlgo- crc32LSB HgAlgo- crc16