3Com S7906E - Switch, Configuration Manual

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A mirroring group contains only one monitor port.
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To ensure that the port mirroring function can work properly, do not enable STP, MSTP, or RSTP
on the monitor port.
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You are recommended to use a monitor port only for port mirroring. This is to ensure that the data
monitoring device receives and analyzes only the mirrored traffic rather than a mix of mirrored
traffic and normally forwarded traffic.
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A port connected to an RRPP ring cannot be configured as the monitor port of a port mirroring
group.
Configuring Local Port Mirroring for an ONU
An S7900E switch installed with an OLT card can work as an OLT in an EPON system. For detailed
information about an EPON system, refer to the Introduction to EPON System part in EPON-OLT
Configuration .
In an EPON system, an OLT can remotely manage and maintain ONUs. An S7900E switch can
configure local port mirroring for ONUs to mirror the incoming or outgoing traffic of an UNI of an ONU to
another UNI of the ONU.
Follow these steps to configure local port mirroring for UNIs:
To do... Use the command... Remarks
Enter system view system-view —
Enter ONU port view
interface interface-type
interface-number
—
Configure a mirroring port
and the traffic direction to be
monitored
uni uni-number mirroring-port
{ both | inbound | outbound }
Required
Configure the monitor port
uni uni-number monitor-port
Required
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When a UNI is configured as the monitor port for port mirroring, it is recommended that you set the
VLAN operation mode of the port to transparent so that it will forward packets without making any
change. For details, refer to EPON-OLT Configuration in the Access Volume .
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You are recommended to use a monitor port only for port mirroring. This is to ensure that the data
monitoring device receives and analyzes only the mirrored traffic rather than a mix of mirrored
traffic and normally forwarded traffic.