Enterasys Networks 5H1XX manual Using a Mirror Port for Analysis, Mirror Port Configuration Screen

Using a Mirror Port for Analysis

Parameter	Description
Designated Bridge (ID)	The priority and MAC address of the device through which
	this port must communicate to reach the root of the
	spanning tree.
Designated Port (ID)	The priority and number of the port on the designated
	bridging device through which this switch must
	communicate with the root of the spanning tree.

7.6USING 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. (Refer to Section 7.11 for information on configuring virtual VLANs.) 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.

Use the Mirror Port Configuration screen (Figure 7-10) to designate a single port pair (source and target ports) for mirroring.

Figure 7-10 Mirror Port Configuration Screen

Mirror Source Port : 1

Mirror Target Port	: 2
Status	: DISABLED

<SAVE> <RETURN> <CANCEL>

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7-18Device Control Menu Screens