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Configuring or Disabling Storm Control (CLI Procedure)

Note: This task uses Junos OS for EX Series switches with support for the Enhanced Layer 2 Software (ELS) configuration style. If your switch runs software that does not support ELS, see Disabling or Enabling Storm Control (CLI Procedure). For ELS details, see Getting Started with Enhanced Layer 2 Software.

On EX4300 switches, the factory default configuration enables storm control on all Layer 2 switch interfaces. The default storm control level is set to 80 percent of the available bandwidth used by the combined broadcast, multicast, and unknown unicast traffic streams.

Storm control is not enabled by default on EX9200 switches.

You can customize the storm control level for a specific interface. You specify the storm control level as the traffic rate in kilobits per second (Kbps) of the combined traffic streams or as the percentage of available bandwidth used by the combined traffic streams.

You can selectively disable storm control for broadcast, multicast, or unknown unicast traffic on all interfaces or on a specified interface. You can additionally disable storm control on registered or unregistered multicast traffic.

This topic describes:

• Configuring Storm Control
• Disabling Storm Control on Broadcast Traffic
• Disabling Storm Control on All Multicast Traffic
• Disabling Storm Control on Registered Multicast Traffic
• Disabling Storm Control on Unregistered Multicast Traffic
• Disabling Storm Control on Unknown Unicast Traffic
• Disabling Storm Control on Multiple Types of Traffic

Configuring Storm Control

Disabling Storm Control on Broadcast Traffic

1. Create a storm control profile with the storm control level set as the traffic rate in kilobits per second of the combined traffic streams and exclude broadcast traffic:
   [edit forwarding-options]
user@switch# set storm-control-profiles profile-name all bandwidth-level kbps no-broadcast
2. Bind the storm control profile to a logical interface:
   [edit]
user@switch# set interfaces interface-name unit 0 family ethernet-switching storm-control profile-name

Disabling Storm Control on All Multicast Traffic

1. Create a storm control profile with the storm control level set as the traffic rate in kilobits per second of the combined traffic streams but exclude multicast traffic:
   [edit forwarding-options]
user@switch# set storm-control-profiles profile-name all bandwidth-level kbps no-multicast
2. Bind the storm control profile to a logical interface:
   [edit]
user@switch# set interfaces interface-name unit 0 family ethernet-switching storm-control profile-name

Disabling Storm Control on Registered Multicast Traffic

1. Create a storm control profile with the storm control level set as the traffic rate in kilobits per second of the combined traffic streams but exclude registered multicast traffic:
   [edit forwarding-options]
user@switch# set storm-control-profiles profile-name all bandwidth-level kbps no-registered-multicast
2. Bind the storm control profile to a logical interface:
   [edit]
user@switch# set interfaces interface-name unit 0 family ethernet-switching storm-control profile-name

Disabling Storm Control on Unregistered Multicast Traffic

1. Create a storm control profile with the storm control level set as the traffic rate in kilobits per second of the combined traffic streams but exclude unregistered multicast traffic:
   [edit forwarding-options]
user@switch# set storm-control-profiles profile-name all bandwidth-level kbps no-unregistered-multicast
2. Bind the storm control profile to a logical interface:
   [edit]
user@switch# set interfaces interface-name unit 0 family ethernet-switching storm-control profile-name

Disabling Storm Control on Unknown Unicast Traffic

1. Create a storm control profile with the storm control level set as the traffic rate in kilobits per second of the combined traffic streams but exclude unregistered multicast traffic:
   [edit forwarding-options]
user@switch# set storm-control-profiles profile-name all bandwidth-level kbps no-unknown-unicast
2. Bind the storm control profile to a logical interface:
   [edit]
user@switch# set interfaces interface-name unit 0 family ethernet-switching storm-control profile-name

Disabling Storm Control on Multiple Types of Traffic

1. Create a storm control profile with the storm control level set as the traffic rate in kilobits per second of the combined traffic streams but exclude broadcast and multicast traffic:
   [edit forwarding-options]
user@switch# set storm-control-profiles profile-name all bandwidth-level kbps no-broadcast no-multicast
2. Bind the storm control profile to a logical interface:
   [edit]
user@switch# set interfaces interface-name unit 0 family ethernet-switching storm-control profile-name