Enterasys Networks VH-2402S manual Using a Mirror Port for Analysis, Mirror Port Configuration

Using a Mirror Port for Analysis

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. When mirroring port traffic, note that the target port must be configured in the same VLAN and be operating at the same speed as the source port (see Configuring Virtual LANs on page 49). If the target port is operating at a lower speed, the source port will be forced to drop its operating speed to match that of the target port.

You can use the Mirror Port Configuration screen to designate a single port pair for mirroring as shown below:

Vertical Horizon Local Management -- VH-2402S

		Mirror Port Configuration
		Mirror Source Port : Unit 1
					Port 1
		Mirror Target Port		:	Unit 1
					Port 2
		Status		: DISABLED
		<APPLY>	<OK>		<CANCEL>
	Use <TAB> or arrow keys to move, other keys to make changes.
		Figure 2-28. Mirror Port Configuration
Parameter		Description
Mirror Source Port		The port whose traffic will be monitored.
Mirror Target Port		The port that will duplicate or “mirror” all the traffic happening on
		the monitored port.
Status		Enables or disables the mirror function.

38 VH-2402S User Interface VH-2402S