Inet (Enhanced-Hash-Key) - Juniper EX2200 Hardware Manual

inet (enhanced-hash-key)

Syntax
Hierarchy Level
Release Information
Description
Default
Options
Copyright © 2015, Juniper Networks, Inc.
inet {
no-ipv4-destination-address;
no-ipv4-source-address;
no-l4-destination-port;
no-l4-source-port;
no-protocol;
vlan-id;
}
[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 payload fields in IPv4 traffic used by the hashing algorithm to make hashing
decisions.
When IPv4 traffic enters a LAG and the hash mode is set to Layer 2 payload, the hashing
algorithm checks the fields configured using the
in the fields to decide how to place traffic onto the LAG bundle's member links or how
to forward traffic to the next hop device when ECMP is enabled.
The hashing algorithm, when used to hash LAG bundle traffic, always tries to manage
bandwidth by evenly load-balancing all incoming traffic across the member links in the
bundle.
The hashing algorithm only inspects the IPv4 fields in the payload to make hashing
decisions when the hash mode is set to
payload by default. You can set the hash mode to Layer 2 payload using the
forwarding-options enhanced-hash-key hash-mode layer2-payload
The following fields are used by the hashing algorithm to make hashing decisions for
IPv4 traffic:
IP destination address
IP source address
Layer 4 destination port
Layer 4 source port
Protocol
no-ipv4-destination-address
algorithm.
—Exclude the IPv4 source address field from the hashing algorithm.
no-ipv4-source-address
no-l4-destination-port —Exclude the Layer 4 destination port field from the hashing
algorithm.
inet statement and uses the information
layer2-payload
—Exclude the IPv4 destination address field from the hashing
Chapter 3: Configuration Statements
. The hash mode is set to Layer 2
set
statement.
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