Supported Platforms
Related Documentation
hash-mode
Syntax
Hierarchy Level
Release Information
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.
Description
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 layer2-payload if you want the hashing algorithm to inspect fields in the Layer 2 payload when making hashing decisions. You must set the hash mode to layer2-header if you want the hashing algorithm to inspect fields in the Layer 2 header when making hashing decisions.
If the hash mode is set to layer2-payload, you can set the fields used by the hashing algorithm to hash IPv4 traffic using the set forwarding-options enhanced-hash-key inet statement. You can set the fields used by the hashing algorithm to hash IPv6 traffic using the set forwarding-options enhanced-hash-key inet6 statement.
If the hash mode is set to layer2-header, you can set the fields that the hashing algorithm inspects in the Layer 2 header using the set forwarding-options enhanced-hash-key layer2 statement.
Default
layer2-payload
Options
layer-2-payload | — | Set the hashing algorithm to use fields in the Layer 2 payload to make hashing decisions. |
layer-2-header | — | Set the hashing algorithm to use fields in the Layer 2 header to make hashing decisions. |
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
