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Home Documentation Junos OS Junos CLI Reference CLI Reference I

Junos CLI Reference

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Junos CLI Reference
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inactivity-interval (Fabric Load Balance)

date_range 19-Nov-23
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Syntax

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inactivity-interval interval;

Hierarchy Level

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[edit forwarding-options enhanced-hash-key fabric-load-balance flowlet]

Description

Set the inactivity interval for adaptive load balancing (ALB) using flowlets within a VCF.

Note:

Starting in Junos OS Release 14.1X53-D46, 15.1R7, 16.1R6, 17.1R3, 17.2R2, 17.3R2, and 17.4R1, the ALB feature is deprecated. If fabric-load-balance is enabled in the configuration and inactivity-interval is set, delete these configuration items upon upgrading Junos OS.

The inactivity interval is the amount of time that occurs between packet bursts on a sending interface before a traffic flow is spliced into smaller traffic flows—flowlets—when ALB is implemented using flowlets. The flowlets are then individually forwarded across the VCF to the same destination device over different paths.

You should configure the inactivity interval to ensure in-order packet delivery, so that overall performance is not negatively impacted by the packet re-ordering process at the receiving device. To ensure in-order packet delivery, the inactivity interval should be larger than the largest latency skew among all the paths in the VCF from any node to any other node.

Default

ALB is disabled, by default.

If ALB is enabled without specifying a mode, ALB is enabled using flowlet mode with an inactivity interval of 16 microseconds.

If ALB is enabled using flowlet mode without specifying an inactivity interval, the inactivity interval is set to 16 microseconds.

Options

interval

The amount of time that occurs between packet bursts on a sending interface before a traffic flow is spliced into flowets.

  • Range: 16 microseconds (16us) to 32 milliseconds(32ms).

Required Privilege Level

system—To view this statement in the configuration.system-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 14.1X53-D10.

Statement deprecated starting in Junos OS Releases 14.1X53-D46, 15.1R7, 16.1R6, 17.1R3, 17.2R2, 17.3R2, and 17.4R1.

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