3com S7906E 설치 설명서

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1-15 
 
A mirroring group contains only one monitor port.  
To ensure that the port mirroring function can work properly, do not enable STP, MSTP, or RSTP 
on the monitor port. 
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. 
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  
 
 
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.  
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.