3Com 4210, 5500 manual Configuration Procedure Configure Switch C, # Create a local mirroring group

230CHAPTER 25: MIRRORING CONFIGURATION GUIDE

Product series	Software version	Hardware version
Switch 4500	Release V03.03.00	All versions
Switch 4210	Release V03.01.00	All versions

Configuration Procedure Configure Switch C:

# Create a local mirroring group.

<3Com> system-view

[3Com] mirroring-group 1 local

# Configure the source ports and destination port for the local mirroring group.

[3Com] mirroring-group 1 mirroring-port Ethernet 1/0/1 Ethernet 1/0/2 both

[3Com] mirroring-group 1 monitor-port Ethernet 1/0/3

Complete Configuration #

mirroring-group 1 local

#

interface Ethernet1/0/1 mirroring-group 1 mirroring-port both

#

interface Ethernet1/0/2 mirroring-group 1 mirroring-port both

#

interface Ethernet1/0/3 mirroring-group 1 monitor-port

#

Precautions When configuring local port mirroring, note the following:

■Packets sent from the switch CPU cannot be mirrored.

■Packets received on the destination port are those processed and forwarded by the switch.

■The local mirroring group takes effect only after a source port and a destination port are added to it.

■The source port or destination port to be configured cannot be a fabric port (only the Switch 5500/5500G have this limitation), or a member port of an existing mirroring group; besides, a destination port cannot be a member port of an aggregation group, an LACP-enabled port, or an STP enabled port.

■When you configure a mirroring destination port on the Switch 5500, if mirroring group 1 does not exist on the switch, the switch will automatically create local mirroring group 1 and add the destination port to the group; if port mirroring group 1 already exists but is not a local mirroring group, your configuration of the destination port will fail.

■On a Switch 4500, if you execute the monitor-portcommand on different ports to configure the mirroring destination port for the switch, the last configuration takes effect.