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Configuring RADIUS-Initiated Subscriber Secure Policy Mirroring Overview

Before you configure subscriber secure policy traffic mirroring, note the following:

  • Subscriber secure policy mirroring runs on the radius-flow-tap service infrastructure. To configure the subscriber secure policy service, you must have the same privileges that are required to configure the radius-flow-tap service.

  • The subscriber secure policy feature requires some system resources while mirroring, encrypting, and sending traffic to the mediation device. For example, you might elect to use a 10-Gigabit Ethernet interface for the tunnel to the mediation device if you expect the amount of traffic you plan to mirror to approach 1 Gbps of actual user data.

To configure the subscriber secure policy service:

  1. Configure radius-flow-tap service support for secure subscriber policy. This support includes optional forwarding-class information that the subscriber secure policy service uses to send mirrored traffic to the content destination device.
  2. Configure an access profile that specifies the RADIUS-related support for subscriber secure policy on the router, including a list of one or more RADIUS authentication servers. The router uses the list of specified servers for both authentication and dynamic request operations. You must also configure the RADIUS dynamic request feature, which provides the CoA message support used in-session traffic mirroring.
  3. Ensure that the following support is also configured:
    • The RADIUS record of the mirrored subscriber must include the RADIUS attributes and VSAs required for subscriber secure policy mirroring. See RADIUS Attributes Used for Subscriber Secure Policy for descriptions of the supported attributes used in RADIUS Accept-Accept and CoA messages.

    • The mediation device must be configured to accept the mirrored content.

  4. (Optional) Enable the mirroring of IPv4 multicast traffic on the router.
  5. (Optional) Configure SNMPv3 trap support to report mirroring-related events to the mediation device.

You can terminate an active subscriber mirroring session at any time.

See Terminating RADIUS-Initiated Subscriber Traffic Mirroring.