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Follow these steps to configure traffic mirroring for a port:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter Ethernet port view of the
destination port
interface interface-type
interface-number
—
Define the current port as the
destination port
monitor-port
Required
Exit current view
quit
—
Enter Ethernet port view of
traffic mirroring configuration
interface interface-type
interface-number
—
Reference ACLs for identifying
traffic flows and perform traffic
mirroring for packets that
match.
mirrored-to inbound acl-rule
monitor-interface
Required
As the priority of traffic classification rules is higher than that of the default rules used for processing
protocol packets, traffic mirroring on all the packets or packets of a VLAN may affect device
management that is implemented through Telnet and so on
Configuration example
Network requirements:
z GigabitEthernet 1/0/1 is connected to the 10.1.1.0/24 network segment.
z Duplicate the packets from network segment 10.1.1.0/24 to the destination mirroring port
GigabitEthernet 1/0/4.
1) Method I
<device> system-view
[device] acl number 2000
[device-acl-basic-2000] rule permit source 10.1.1.0 0.0.0.255
[device-acl-basic-2000] quit
[device] interface GigabitEthernet 1/0/4
[device-GigabitEthernet1/0/4] monitor-port
[device-GigabitEthernet1/0/4] quit
[device] interface GigabitEthernet 1/0/1
[device-GigabitEthernet1/0/1] mirrored-to inbound ip-group 2000 monitor-interface
2) Method II
<device> system-view
[device] acl number 2000
[device-acl-basic-2000] rule permit source 10.1.1.0 0.0.0.255
[device-acl-basic-2000] quit
[device] interface GigabitEthernet 1/0/4
[device-GigabitEthernet1/0/4] monitor-port
[device-GigabitEthernet1/0/4] quit
