Hash-Mode - Juniper EX2200 Hardware Manual

hash-mode

Syntax
Hierarchy Level
Release Information
Description
Default
Options
Required Privilege
Level
Copyright © 2015, Juniper Networks, Inc.
hash-mode {
layer2-header;
layer2-payload;
}
[edit forwarding-options enhanced-hash-key]
Statement introduced in Junos OS Release 13.2X51-D15 for EX Series switches.
Statement introduced in Junos OS Release 13.2X51-D20 for QFX Series devices.
Select the mode for the hashing algorithm.
The hashing algorithm is used to make traffic-forwarding decisions for traffic entering a
LAG bundle or for traffic exiting a switch when ECMP is enabled.
For LAG bundles, the hashing algorithm determines how traffic entering a LAG bundle is
placed onto the bundle's member links. The hashing algorithm tries to manage bandwidth
by evenly load-balancing all incoming traffic across the member links in the bundle.
When ECMP is enabled, the hashing algorithm determines how incoming traffic is
forwarded to the next-hop device.
The hash mode that is set using this statement determines which fields are inspected
by the hashing algorithm. You must set the hash mode to
hashing algorithm to inspect fields in the Layer 2 payload when making hashing decisions.
You must set the hash mode to
fields in the Layer 2 header when making hashing decisions.
If the hash mode is set to layer2-payload
algorithm to hash IPv4 traffic using the
statement. You can set the fields used by the hashing algorithm to hash IPv6 traffic using
the
set forwarding-options enhanced-hash-key inet6
If the hash mode is set to
layer2-header
inspects in the Layer 2 header using the
statement.
layer2-payload
—Set the hashing algorithm to use fields in the Layer 2 payload to make
layer-2-payload
hashing decisions.
—Set the hashing algorithm to use fields in the Layer 2 header to make
layer-2-header
hashing decisions.
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
if you want the hashing algorithm to inspect
layer2-header
, you can set the fields used by the hashing
set forwarding-options enhanced-hash-key inet
statement.
, you can set the fields that the hashing algorithm
set forwarding-options enhanced-hash-key layer2
Chapter 3: Configuration Statements
if you want the
layer2-payload
183