Cambium Networks cnMatrix EX2010-P Handleiding (320 Pagina's)

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L2 Features 111

Atraffic storm occurs when packets flood the LAN, creating excessive traffic and degrading network

performance. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast,

multicast, or unicast traffic storm on physical interfaces.

The traffic storm control (also called traffic suppression) featurehas been addedtomonitor incoming

traffic levels over a fixed interval, and during the interval, it compares the traffic level with the traffic

storm control level that you configure. Each port has a single traffic storm control level that is used for all

types of traffic (broadcast, multicast, and unicast).

Standards

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N/A

Scaling Numbers

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N/A

Limitations

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Regardless of the value configured by the user in hardware, the actual configured value is

rounded-down to the closest multiple of 640pkts/sec (for 100M speed), 6400pkts/sec (for 1G

speed), and 64000pkts/sec (for 10G speed).

Default Values

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DLF Storm Control – Disabled by default.

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Broadcast Storm Control – Disabled by default.

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Multicast Storm Control – Disabled by default.

How to Enable Storm Control in CLI Interface

1. Type the configure terminal command into the terminal. Press the Enter key.

2. Type the interface gigabitethernet 0/1 command into the terminal to select the interface to be

configured. Press the Enter key.

3. Type the storm-control broadcast level 100 command into the terminal to set the storm control

rate for broadcast packets. Press the Enter key.

4. Type the end command into the terminal to go back to the Privileged EXEC mode. Press the Enter

key.

5. Type the show interfaces gigabitethernet 0/1 storm-control command into the terminal to display

the interface status and configuration (verify if broadcast storm control is enabled). Press the

Enter key.

For more information, see Storm Control Parameters and Commands.

Quality of Service

Managing QoS

QoS works in tight conjunction with the ACL module, which provides a way for the user to classify traffic

using custom parameters and feed it to the QoS module.

The QoS module revolves about the concept of “class”. Traffic can be assigned to classes, based on the

QoS information in the packet (dot1p priority or DSCP bits), based on per-port settings (default user-

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