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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
535
5.17 Mirror Port Commands
This section describes how to mirror traffic from a source port to a target port.
Command Function Mode
port monitor Configures a mirror session IC
show port monitor Shows the configuration for a mirror port PE
Table 5-59 Mirror Port Commands
port monitor
This command configures a mirror session. Use the no form to clear a mirror session.
Syntax
port monitor interface [rx | tx | both]
no port monitor interface
interface -ethernet unit/port (source port)
-unit - Stack unit. (Range: 1)
-port - Port number. (Range: 1-28)
rx - Mirror received packets.
tx - Mirror transmitted packets.
both - Mirror both received and transmitted packets.
Default Setting
No mirror session is defined. When enabled, the default mirroring is for both received and transmitted packets.
Command Mode
Interface Configuration (Ethernet, destination port)
Command Usage
You can mirror traffic from any source port to a destination port for real-time analysis. You can then attach a logic analyzer
or RMON probe to the destination port and study the traffic crossing the source port in a completely unobtrusive manner.
The destination port is set by specifying an Ethernet interface.
The mirror port and monitor port speeds should match, otherwise traffic may be dropped from the monitor port.
You can create multiple mirror sessions, but all sessions must share the same destination port. However, you should
avoid sending too much traffic to the destination port from multiple source ports.
Example
The following Example configures the switch to mirror all packets from port 6 to 11:
Console(config)#interface ethernet 1/11