Port-Mirroring Instances Overview
You can configure port mirroring for IPv4 and IPv6 traffic on all M Series, T Series, and MX Series routers. In addition, on the M7i, M10i, M120, M320, and MX Series routers, you can configure port mirroring for Layer 2 VPLS traffic.
You configure global port mirroring by including the port-mirroring statement at the [edit forwarding-options] hierarchy level. Configuring port-mirroring properties globally results in the properties being applied system-wide to all the Packet Forwarding Engines and their respective ports.
On MX Series, M320, and M120 routers, you can configure named port-mirroring instances for Layer 2 VPLS traffic. Configuring port-mirroring instances enables you to customize each instance with different properties for input-sampling and port-mirroring output destinations, instead of having to use a single system-wide configuration for port mirroring.
You configure multiple port-mirroring instances by including the instance port-mirroring-instance-name statement at the [edit forwarding-options port-mirroring] hierarchy level. You can then associate individual port-mirroring instances with an FPC, PIC, or FEB (depending on the router).
For more information about configuring port mirroring on all routers, see the Junos OS Policy Framework Configuration Guide . For more information on configuring port mirroring for Layer 2 VPLS traffic on MX Series routers, see the Junos OS Layer 2 Configuration Guide.
