Before you configure services to mirror subscriber traffic, make sure that the JUNOS routing platform is configured for mirroring, that SRC service policies specify which traffic to mirror, and that the router configuration specifies how to implement mirroring on that system. For information about port mirroring on a JUNOS routing platform, see the JUNOS Policy Framework Configuration Guide.
Figure 3 illustrates the services in the sample data that mirror subscriber traffic from JUNOS routing platforms and shows the routers on which the services are activated.
Figure 3: Services to Mirror Traffic
The traffic-mirroring application passes the value of the subrIps parameter to the aggregate service; the aggregate service then substitutes the value of the subrIps parameter for the fragSubrIps parameter in the fragment services. For example, in Figure 4, the enterprise IP addresses (112.2.1.13 and 112.2.1.14) that were entered are passed to the aggregate service. The aggregate service passes the value for the IP address to the fragment service for the local router (JunosA). Similarly, in Figure 5, the Mirror Traffic of Subscriber’s Current IP check box in the Traffic Mirroring Administration portal was selected, and the aggregate service passes the subscriber’s current IP address in the subscriber session (111.1.2.6) to the fragment services for the JUNOS routing platforms in the same POP (JunosC and JunosD).
Figure 4: Sample fragSubrIps Parameter Values for Mirroring Enterprise Traffic
Figure 5: Sample fragSubrIps Parameter Value for Mirroring Subscriber Traffic
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