Hash-Control - Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual

Alcatel-lucent omniswitch 6850-48: reference guide

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Table of Contents

Chassis Management and Monitoring Commands

hash-control

Configures the hash control method on the switch. Depending upon this configuration, hashing algorithm

used by various applications for packet forwarding will be affected.

hash-control {brief | extended [udp-tcp-port] | load-balance non-ucast {enable | disable}}

hash-control extended no udp-tcp-port

Syntax Definitions

udp-tcp-port

enable | disable

hash-control (6400/6850/6855) brief

hash-control (9000E)

udp-tcp-port

Platforms Supported

OmniSwitch 6400, 6850, 6850E, 6855, 9000E.

Usage Guidelines

Disabling TCP-UDP port hashing is recommended when Server Load Balancing (SLB) is configured,

because SLB dynamically assigns ports.

The hash control setting also impacts the fabric load balancing for Chassis based products. It is recom-

mended not to set brief hashing mode on Chassis based products.

Changing the hash control mode affects the hashing algorithm for Link Aggregation, Server Load

Balancing and EMCP.

The hashing mode must be set to extended to enable UDP/TCP port hashing.

Enabling or disabling the load-balance non-ucast option applies to all link aggregates. When this

option is disabled (the default), link aggregation will only load balance unicast packets; all non-unicast

packets are sent through the primary port of the link aggregate.

When the load-balance non-ucast option is enabled, all non-unicast traffic (broadcast, L2 multicast,

L3 multicast, and unknown unicast) is load balanced over the link aggregate.

OmniSwitch CLI Reference Guide

Sets hashing to brief mode.

Sets hashing to extended mode.

Sets extending hashing to use UDP/TCP ports.

Enables or disables the the load balancing of non-unicast traffic on a

link aggregate.