Administrator Guide

xor2 | xor4 | xor8 |
xor16 }
• crc32MSB: Use CRC32_UPPER — MSB 16 bits of computed CRC32
• crc32LSB: Use CRC32_LOWER — LSB 16 bits of computed CRC32
• 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
seed seed-value Enter the keyword seed then the hash algorithm seed value. The range is from 0 to
2147483646.
linecard slot-id |
port-set port-pipe
Enter the linecard slot-id parameters to specify a switch line card. The slot IDs
range from 0 to 11.
Enter the port-set port-pipe parameters to specify a port pipe (set of ports) on
the line card. The port-pipe range is from 0 to 3.
Defaults
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.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.10.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.8.1.0 Added the nh-ecmp option.
7.7.1.1 Added the nh-ecmp option.
6.5.1.0 Added the line card option on TeraScale only.
6.3.1.0 Added support for ECMP and LAG on TeraScale only.
Usage Information To ensure that CRC is not used for LAG, set the default hash-algorithm method.
The hash value calculated with the hash-algorithm command is unique to the entire chassis. The hash algorithm
command with the line card option changes the hash for a particular line card by applying the mask specified in
the IPSA and IPDA fields.
In addition, the linecard slot-id ip-sa-mask value ip-da-mask value option has the following
behavior to maintain bidirectionality:
• When hashing is done on both IPSA and IPDA, the ip-sa-mask and ip-da-mask values must be equal.
(Single Linecard).
• When hashing is done only on IPSA or IPDA, the system maintains bidirectionality with masks set to XX 00 for
line card 1 and 00 XX for line card 2 (ip-sa-mask and ip-da-mask). The mask value must be the same for
both line cards when using multiple line cards as ingress (where XX is any value from 00 to FF for both line
cards). For example, assume that traffic is flowing between line card 1 and line card 2:
• hash-algorithm linecard 1 ip-sa-mask aa ip-da-mask 00
Equal Cost Multi-Path (ECMP) 623