LevelOne FGL-2870 - Manual (Page 231)

Port Configuration
3-177
3
Configuring Port Mirroring
You can mirror traffic from any source port to a
target port for real-time analysis. You can then
attach a logic analyzer or RMON probe to the
target port and study the traffic crossing the
source port in a completely unobtrusive manner.
Command Usage
• Monitor port speed should match or exceed source port speed, otherwise traffic
may be dropped from the monitor port.
• All mirror sessions must share the same destination port.
• When mirroring port traffic, the target port must be included in the same VLAN as
the source port when using MSTP (see "Spanning Tree Algorithm Configuration"
on page 3-188).
Command Attributes
• Mirror Sessions – Displays a list of current mirror sessions.
• Source Port – The port whose traffic will be monitored. (Range: 1-28/52)
• Type – Allows you to select which traffic to mirror to the target port, Rx (receive),
Tx (transmit), or Both. (Default: Rx)
• Target Port – The port that will mirror the traffic on the source port.
(Range: 1-28/52)
Web – Click Port, Mirror Port Configuration. Specify the source port, the traffic type
to be mirrored, and the monitor port, then click Add.
Figure 3-104 Mirror Port Configuration
CLI – Use the interface command to select the monitor port, then use the port
monitor command to specify the source port and traffic type.
Console(config)#interface ethernet 1/10 4-220
Console(config-if)#port monitor ethernet 1/13 tx 4-260
Console(config-if)#
Source
port(s) Single
target
port