R21xx-HP FlexFabric 11900 Network Management and Monitoring Configuration Guide

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Configuring traffic mirroring

Overview

Local traffic mirroring

Local traffic mirroring copies the specified packets to the specified destination for packet analyzing and

monitoring. It is implemented through QoS policies. You define traffic classes and configure match

criteria to classify packets to be mirrored, and then you configure traffic behaviors to mirror packets that

fit the match criteria to the specified destination. Traffic mirroring allows you to flexibly classify packets to

be analyzed by defining match criteria. For more information about QoS policies, traffic classes, and

traffic behaviors, see ACL and QoS Configuration Guide.

You can configure the traffic to be mirrored to the following destinations:

• Interface—Mirroring traffic to an interface copies the matching packets to an interface connecting

to a data monitoring device, which analyzes the packets received on the interface.

• CPU—Mirroring traffic to a CPU copies the matching packets to a CPU, whose card is configured

with traffic mirroring, to analyze the packets or deliver the packets to upper layers.

Remote traffic mirroring

Remote traffic mirroring combines traffic mirroring with remote port mirroring to use a remote mirroring

group to mirror local packets matching the specified criteria to the specified destination port on a remote

device.

Configure remote traffic mirroring in the following steps:

1. Configure traffic mirroring on the local device to mirror packets matching certain criteria to an

egress port.

2. Configure a remote source mirroring group on the local device and specify the destination port for

traffic mirroring as the egress port, so that packets sent to the destination port by traffic mirroring

can be mirrored to the remote device by remote port mirroring.

Configuring local traffic mirroring

For more information about the following commands except the mirror-to command, see ACL and QoS

Command Reference.

Local traffic mirroring configuration task list

Tasks at a

lance

(Required.) Configuring match criteria

(Required.) Configuring a traffic behavior

(Required.) Configuring a QoS policy