Configuring local port mirroring – H3C Technologies H3C SR8800 User Manual
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NOTE:
•
Layer 2 remote port mirroring can be implemented when a fixed reflector port, configurable reflector
port, or configurable egress port is available on the source device. The configuration method when
either of the first two ports is available on the source device is called reflector port method. You must
configure a reflector port on the source device that has a configurable reflector port. The router only
supports configurable reflector ports.
•
Layer 2 remote port mirroring cannot be implemented on an SPE card when a configurable reflector
port is available on the source device.
Figure 46 Layer 2 remote port mirroring implementation (with a reflector port)
On the network shown in
, the source device copies the packets received on the source port
GigabitEthernet 3/1/1 to the reflector port GigabitEthernet 3/1/3. GigabitEthernet 3/1/3 broadcasts
the packets in the remote probe VLAN and the intermediate device in the VLAN transmits the packets to
the destination device. When receiving these mirrored packets, the destination device compares their
VLAN IDs to the ID of the remote probe VLAN configured in the remote destination group. If the VLAN
IDs of these mirrored packets match the remote probe VLAN ID, the device forwards them to the data
monitoring device through the monitor port.
Configuring local port mirroring
Configuring local mirroring is to configure local mirroring groups.
A local mirroring group comprises one or multiple mirroring ports and one monitor port that are located
on the same router.
To configure local port mirroring:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Create a local mirroring group.
mirroring-group group-id local
N/A
Source
device
Intermediate
device
Destinati
on device
GE3/1/1
Remote
prone VLAN
Data monitoring
device
Host
Remote
probe VLAN
Mirroring process in the device
Source port
Monitor port
Original packets
Reflector port
GE3/1/3
GE3/1/2
GE3/1/1
GE3/1/2
GE3/1/1
GE3/1/2
GE3/1/1
GE3/1/3
GE3/1/2
Common port
Mirroring packets
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