1110
Command Reference for AT-IX5-28GPX High Availability, High Power Video Surveillance PoE Switch
C613-50057-01 REV A
AlliedWare Plus™ Operating System - Version 5.4.5-0.x
A
UTHENTICATION
C
OMMANDS
PLATFORM
L
3-
VLAN
-
HASHING
-
ALGORITHM
platform l3-vlan-hashing-algorithm
Overview
This command enables you to change the L3 VLAN hash-key-generating
algorithm.
The
no
variant of this command returns the hash-key algorithm to the default of
crc32l.
Syntax
platform l3-vlan-hashing-algorithm
{crc16l|crc16u|crc32l|crc32u}
no platform l3-vlan-hashing-algorithm
Default
The hash-key algorithm is crc32l by default.
Mode
Global configuration
Usage
Occasionally, when using the Multiple Dynamic VLAN feature, a supplicant cannot
be authenticated because a collision occurs within the VLAN L3 table. This can
happen when more than four different IP addresses produce the same hash-key.
A work-around when this situation occurs, can sometimes be applied by changing
the hashing algorithm from its default of crc32l. Several different algorithms may
need to be tried to rectify the problem.
You must restart the switch for this command to take effect.
Note that this command is intended for technical support staff, or advanced end
users.
Example
To change the hash-key generating algorithm applying to the lower bits of CRC-16,
use the command:
awplus#
configure terminal
awplus(config)#
platform l3-vlan-hashing-algorithm crc16l
Related
Commands
platform mac-vlan-hashing-algorithm
show platform
Parameter
Description
crc16l
The algorithm that will apply to the lower bits of CRC-16
crc16u
The algorithm that will apply to the upper bits of CRC-16
crc32l
The algorithm that will apply to the lower bits of CRC-32
crc32u
The algorithm that will apply to the upper bits of CRC-32
