Deployment Guide

xor1 | xor2 | xor4 | xor8 | xor16}[[hg {crc16 | crc16cc | crc32MSB | crc32LSB |
xor1 | xor2 | xor4 | xor8 | xor16}]| [lag {crc16 | crc16cc | crc32MSB |
crc32LSB | xor1 | xor2 | xor4 | xor8 | xor16 }][stack-unit|linecard number |
port-set number] | [hg—seed value] | [seedvalue]
To return to the default hash algorithm, use the no hash-algorithm command.
To return to the default ECMP hash algorithm, use the no hash-algorithm ecmp algorithm-value command.
To remove the hash algorithm on a particular stack-unit / line-card, use the no hash-algorithm linecard
number command.
Parameters
algorithm-number Enter the algorithm number. The range is from 0 to 47.
ecmp {crc16 |
crc16cc |
crc32MSB |
crc32LSB | crc-
upper | dest-ip | lsb
| xor1 | xor2 | xor4 |
xor8 | xor16}
TeraScale and ExaScale Only: Enter the keyword ecmp then one of the following options:
• crc16: Use CRC16_BISYNC — 16 bit CRC16-bisync polynomial (default)
• 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
• crc-upper: Uses the upper 32 bits of the key for the hash computation
• dest-ip: Uses the destination IP for ECMP hashing
• lsb: Returns the LSB of the key as the hash
• 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
lag hash algorithm
value
Enter the keyword lag then the LAG hash algorithm value. The range is from 0 to 47.
nh-ecmp hash
algorithm value
(OPTIONAL) Enter the keyword nh-ecmp then the ECMP hash algorithm value.
linecard number (OPTIONAL) Enter the keyword linecard then the linecard slot number.
ip-sa-mask value (OPTIONAL) Enter the keywords ip-sa-mask then the ECMP/LAG hash mask value.
The range is from 0 to FF. The default is FF.
ip-da-mask value (OPTIONAL) Enter the keywords ip-da-mask then the ECMP/LAG hash mask value.
The range is from 0 to FF. The default is FF.
ecmp crc16 |
crc16cc |
crc32MSB |
crc32LSB | crc-
upper | dest-ip |
ow-based-hashing
| crc16|crc16cc|
crc32MSB|
crc32LSB|xor1 |
Enter the keyword ecmp then one of the following options:
• crc16: Use CRC16_BISYNC — 16 bit CRC16-bisync polynomial (default)
• 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
• crc-upper: Uses the upper 32 bits of the key for the hash computation
• dest-ip: Uses the destination IP for ECMP hashing
• flow-based-hashing: Enter the keywords flow-based-hashing followed by
the algorithm
458 Equal Cost Multi-Path (ECMP)