Administrator Guide

• hash-algorithm linecard 2 ip-sa-mask 00 ip-da-mask aa
The different hash algorithms are based on the number of Port Channel members and packet values. The default
hash algorithm (number 0) yields the most balanced results in various test scenarios, but if the default algorithm
does not provide a satisfactory distribution of traffic, use the hash-algorithm command to designate another
algorithm.
When a Port Channel member leaves or is added to the Port Channel, the hash algorithm is recalculated to
balance traffic across the members.
hash-algorithm hg
To distribute traffic flows across different internal HiGig links, change the hash algorithm.
C9000 Series
Syntax
hash-algorithm hg {crc16 | xor1 | xor2 | xor4 | xor8 | xor16 | crc16cc |
crc32MSB | crc32LSB} linecard slot-id port-set port-pipe
Parameters
crc16 Use CRC16_BISYNC — 16-bit CRC16-bisync polynomial (default).
xor1 Use CRC16_BISYNC_AND_XOR1 — Upper 8 bits of CRC16-BISYNC and lower 8 bits of
xor1.
xor2 Use CRC16_BISYNC_AND_XOR2 — Upper 8 bits of CRC16-BISYNC and lower 8 bits of
xor2.
xor4 Use CRC16_BISYNC_AND_XOR4 — Upper 8 bits of CRC16-BISYNC and lower 8 bits of
xor4.
xor8 Use CRC16_BISYNC_AND_XOR8 — Upper 8 bits of CRC16-BISYNC and lower 8 bits of
xor8.
xor16 Use CR16 — 16-bit XOR.
crc16cc Use CRC16_CCITT — 16-bit CRC16 using CRC16-CCITT polynomial.
crc32MSB Use CRC32_UPPER — MSB 16 bits of computed CRC32.
crc32LSB Use CRC32_LOWER — LSB 16 bits of computed CRC32.
linecard slot-id
port-set port-pipe
Enter the linecard slot ID and port-pipe number for the set of ports for which you want to
redistribute traffic flows. The range of slot IDs is 0 to 11. The range of port-pipe numbers
is 0.
Defaults crc16 algorithm
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, see 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 Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.11.4 Introduced on the Z9000.
624 Equal Cost Multi-Path (ECMP)