Users Guide

operates (ingress port based load balancing is disabled) the hashing of RRoCE packets
is not operational.
Flex hash APIs do not mask out unwanted byte values after extraction of the data from
the Layer 4 headers for the offset value.
Example
Dell#load-balance ingress-port enable
load-balance flexhash
Specify the parameters for the Flex Hash mechanism, such as whether IPv4 or IPv6 packets must be subject
to Flex Hash functionality, a unique protocol number, the offset of hash fields from the start of the L4 header
to be used for hash calculation, and a meaningful description to associate the protocol number with the
name.
Syntax
load-balance flexhash ipv4/ipv6 ip-proto <protocol number>
<description string> offset1 <offset1 value> [offset2 <offset2
value>]
To disable the Flex hash settings, use the no load-balance flexhash ipv4/ipv6
ip-proto protocol number command.
Parameters
ipv4 Denotes whether Flex Hash needs to be enabled for IPv4
packets.
ipv6 Denotes whether Flex Hash needs to be enabled for IPv6
packets.
protocol number
Represents the Outer IPv4 protocol field in case of IPv4 packets,
and the Outer IPv6 next header field in case of IPv6 packets.
The ipv4/ipv6 keyword and the IP protocol value are used as
keys to identify if a duplicate flex hash configuration is already
present. Duplicate flex hash configuration is not possible. To
change an existing flex hash configuration, you must delete the
existing flex hash attribute and configure the flex attribute
afresh.
description string A description string is followed by the protocol number to
enable you to associate the protocol number with the protocol
name in an easily-identifiable way. For example, for a protocol
number of 254, you can specify the description as RRoCE.
offset1 value Specify the byte offset from the start of the L4 header from
which the 2-byte data is extracted and be used in hash
computation. You must enter the offset as an even number. The
offset range is 0 – 30 bytes from start of L4 header.
Flex Hash and Optimized Boot-Up 669