Mirroring

Mirroring is a feature where ingress/egress frames on ports can be copied (mirrored) to one specific designated port.

A port can be configured to have the role 'Mirrored' or 'Monitor' in the Mirroring feature.
In a switch, there can only be one 'Monitor' port.
It is configurable if Ingress and/or Egress frames on the 'Mirrored' port are copied to the 'Monitor' port.

By default, the port has no Mirroring role.

First, let’s see that the port has no Mirroring role. It is determined as 'eth-mirror/config' is empty.

The interface (port) name is '1'

FETCH request message:

FETCH response message:

The port can copy frames to the Monitor port based on ingress or egress direction.

Configure a Mirrored port with these attributes:
Ingress Mirroring is enabled.
Egress Mirroring is disabled.
The interface (port) name is '1'.

iPATCH request message:

Let’s confirm the Mirroring configuration of the port:

FETCH request message:

FETCH response message:

The Monitor port is transmitting mirrored frames. A trunk tag can be pushed to the frames, and transmitting of 'Normal' forwarded frames can be enabled.

Configure a Monitor port with these attributes:
Forwarding of normal traffic is disabled.
Push of trunk TAG is enabled with VID 100.
The interface (port) name is '2'.

iPATCH request message:

Let’s confirm the Mirroring configuration of the port:

FETCH request message:

FETCH response message: