Reference Guide

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Defaults
0 for hash-algorithm value on TeraScale and ExaScale
IPSA and IPDA mask value is FF for stack-unit
Command Modes
CONFIGURATION
Command
History
Usage
Information
Set the default hash-algorithm method on ExaScale systems to ensure CRC is not
used for LAG. For example,
hash-algorithm ecmp xor lag checksum nh-ecmp
checksum
To achieve the functionality of hash-align on the ExaScale platform, do not use CRC
as a hash-algorithm method.
The hash value calculated with the hash-algorithm command is unique to the entire
chassis. The hash algorithm command with the stack-unit option changes the hash for
a particular stack-unit by applying the mask specified in the IPSA and IPDA fields.
The stack-unit option is applicable with the lag-hash-align microcode only (refer to ).
Any other microcode returns an error message as follows:
lag hash algorithm
value
TeraScale and ExaScale Only: Enter the keyword lag followed by the
LAG hash algorithm value.
Range: 0 to 47
nh-ecmp hash
algorithm value
(OPTIONAL) Enter the keyword nh-ecmp followed by the ECMP hash
algorithm value.
linecard number
(OPTIONAL) TeraScale and ExaScale Only: Enter the keyword
linecard followed by the linecard slot number.
Range: 0 to 13 on an E1200/E1200i, 0 to 6 on an E600/E600i, and 0 to 5
on an E300
ip-sa-mask value
(OPTIONAL) Enter the keyword ip-sa-mask followed by the ECMP/
LAG hash mask value.
Range: 0 to FF
Default: FF
ip-da-mask value
(OPTIONAL) Enter the keyword ip-da-mask followed by the ECMP/
LAG hash mask value.
Range: 0 to FF
Default: FF
Version 9.0.2.0 Introduced on then S6000.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.2.1.0 Introduced on the S-Series
Version 9.0.2.0 Added nh-ecmp option
Version 7.7.1.1 Added nh-ecmp option
Version 6.5.1.0 Added support for the stack-unit option on TeraScale only
Version 6.3.1.0 Added the support for ECMP and LAG on TeraScale only