Users 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

9.8(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 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

Dell#load-balance ingress-port enable

576 Flex Hash and Optimized Boot-Up