> - Downloads
> - Configuring Traffic-Mirror Actions (SRC CLI)
> - Related Topics
> - Before You Configure SRC Policies
> - Configuring Classify-Traffic Conditions
> - Configuring Forward Actions (SRC CLI)
> - Configuring Traffic-Mirror Actions (C-Web Interface)

> # Configuring Traffic-Mirror Actions (SRC CLI)

> Use this action to mirror traffic from a destination to a source or from a source to a destination. You can configure traffic-mirror actions for JUNOS filter input policy rules.

> Before you use traffic-mirror actions, configure forwarding options on routers running JUNOS Software for port mirroring and next-hop group. For information about how these features work on the router, see the JUNOS Policy Framework Configuration Guide.

> The type of action that you can create depends on the type of policy rule. See Policy Information Model.

> The rule containing a traffic-mirror action must comply with these conditions:

> - It must be combined with forward actions in the same rule. One of the forward actions must accept the traffic if the source and/or destination IP addresses do not match the conditions.
> - It contains either no classify-traffic condition or only one classify-traffic condition.
> - It can be marked for accounting.

> Use the following configuration statement to configure a traffic-mirror action:

> `
> policies group name list name rule name traffic-mirror name {
>   description description ;
> }
> `

> To configure a traffic-mirror action:

> 1. From configuration mode, enter the traffic-mirror configuration. For example, in this procedure, fromSubnets is the name of the traffic-mirror action.
>    `
>    user@host# edit policies group junos list mirror rule pr traffic-mirror fromSubnets
>    `
> 2. (Optional) Enter a description for the traffic-mirror action.
>    `
>    [edit policies group junos list mirror rule pr traffic-mirror fromSubnets]
>    user@host# set description description
>    `
> 3. (Optional) Verify the traffic-mirror action configuration.

>        [edit policies group junos list mirror rule pr traffic-mirror fromSubnets]
>        user@host# show
>        description "Traffic mirroring action for subnet.";

> #### Published: 2009-09-22

> Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice.