Technical Documentation

Configuring Port-Mirroring Instances on MX Series Ethernet Services Routers

You can configure port-mirroring instances both at the DPC level and at the PIC level on MX Series routers, as described in the following topics:

Note: Port mirroring instances are not supported on MX80 routers. You can, however, configure port mirroring at the global 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:

[edit chassis]fpc slot-number {port-mirror-instance port-mirroring-instance-name;}

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:

[edit chassis]fpc slot-number {port-mirror-instance port-mirroring-instance-name-a;pic slot-number {port-mirror-instance port-mirroring-instance-name-b;}}

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.


Published: 2010-04-26