Configuring Port-Mirroring Instances on MX Series 5G Universal Routing Platforms

On an MX Series router with a DPC card, you can configure port-mirroring instances both at the DPC level and at the PIC level. However, on MX Series routers with MPCs, port mirroring instances can only be bound to the FPC level and not up to the PIC level.

Configuring Port-Mirroring Instances at the DPC Level

A port-mirroring instance configured at the FPC level for the DPC is bound to all the Packet Forwarding Engines on the DPC.

To associate a port-mirroring instance with a specific DPC and its Packet Forwarding Engines, include the port-mirror-instance port-mirroring-instance-name statement at the [edit chassis fpc slot-number] hierarchy level:

The properties of the port-mirroring instance associated with the DPC override any global port-mirroring properties (configured by including the port-mirroring statement at the [edit forwarding-options] hierarchy level).

Configuring Port-Mirroring Instances at the PIC Level

For MX Series routers, there is a one-to-one mapping of Packet Forwarding Engines and PICs. Therefore, a port-mirroring instance configured at the PIC level is bound to its Packet Forwarding Engines and ports.

To associate a port-mirroring instance with a specific Packet Forwarding Engine, include the port-mirror-instance port-mirroring-instance-name statement at the [edit chassis fpc slot-number pic slot-number] hierarchy level:

The properties of the port-mirroring instance associated with the PIC override the properties of the port-mirroring instance associated with the DPC (configured by including the port-mirroring port-mirroring-instance-name statement at the [edit chassis fpc slot-number] hierarchy level).

For more information about configuring port mirroring for Layer 2 VPLS traffic on MX Series routers, see the Junos MX Series Ethernet Services Routers Layer 2 Configuration Guide.