Hash-Algorithm Ecmp - Dell Z9500 Command Reference Manual

hash-algorithm ecmp

Change the hash algorithm used to distribute traffic flows across an ECMP (equal-cost multipath routing)
group.
Z9500
Term heading Description heading
Syntax
hash-algorithm ecmp {crc-upper} | {dest-ip} | {lsb}
To return to the default hash algorithm, use the no hash-algorithm ecmp
command.
Parameters
crc-upper
dest-ip
lsb
Defaults
•
•
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version
9.2(1.0)
8.3.19.0
8.3.11.1
8.3.7.0
8.1.1.0
7.6.1.0
7.5.1.0
Usage Information The hash value calculated with the hash-algorithm command is unique to the
entire chassis. The default ECMP hash configuration is crc-lower. This command
takes the lower 32 bits of the hash key to compute the egress port and is the "fall-
back" configuration if you have not configured anything else.
744
Uses the upper 32 bits of the key for the hash computation.
The default is crc-lower.
Uses the destination IP for ECMP hashing. The default is
enabled.
Returns the LSB of the key as the hash. The default is crc-
lower.
crc-lower
dest-ip enabled
Description
Introduced on the Z9500.
Introduced on the S4820T.
Introduced on the Z9000.
Introduced on the S4810.
Introduced on the E-Series ExaScale.
Introduced on the S-Series.
Introduced on the C-Series.
Equal Cost Multi-Path (ECMP)