Reference Guide

Flex Hash and Optimized Boot-Up
This chapter describes the Flex Hash and fast-boot enhancements.
Topics:
• load-balance ingress-port enable
• load-balance flexhash
• reload-type fastboot
• lacp fast-switchover
• encapsulation dot1q
load-balance ingress-port enable
Enable the Flex hash functionality. This utility is supported on the platform.
Syntax
load-balance ingress-port enable
To disable the Flex hash capability, use the no version of this command.
Default None
Command Modes CONFIGURATION mode
Command
History
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S6100-ON.
9.8(1.0) Introduced on the Z9100–ON.
9.3(0.0) Introduced on the S6000 platform.
9.2(1.0) Introduced on the Z9500.
Usage
Information
Flex hash uses the RTAG7 bins 2 and 3 (overlay bins). These bins must be enabled for Flex hash to be
configured. These bins contain the source module and source port information. These bins are disabled
by default in releases of Dell EMC Networking OS earlier than Release 9.3.0.0. The default behavior
of disabling of these bins occurs because of incorrect egress port information that would otherwise be
displayed in the output of the diagnostic show command of show ip flow.
As a result, when load balancing of RRoCE packets using Flex hash is enabled, the show ip flow
command is not functional. Similarly, when show ip flow command 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
DellEMC#load-balance ingress-port enable
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568 Flex Hash and Optimized Boot-Up