HP 6125XLG R2306-HP 6125XLG Blade Switch Network Management and Monitoring Con - Page 111

Port mirroring classification and implementation, Local port mirroring

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NOTE: The reflector port is used to enable local mirroring to support multiple monitor ports. Port mirroring classification and implementation Port mirroring falls into local port mirroring and remote port mirroring depends on whether the mirroring source and the mirroring destination are on the same device. Local port mirroring In local port mirroring, the source device is directly connected to the data monitoring device and can act as the destination device to forward mirrored packets to the data monitoring device. The mirroring source and mirroring destination are on the same device. A mirroring group that contains the mirroring source and the mirroring destination on the device is called a "local mirroring group." Figure 33 Local port mirroring implementation Mirroring process in the device XGE1/1/5 XGE1/1/6 Host XGE1/1/5 XGE1/1/6 Device Original packets Mirrored packets Source port Monitor port Data monitoring device As shown in Figure 33, the source port Ten-GigabitEthernet 1/1/5 and monitor port Ten-GigabitEthernet 1/1/6 reside on the same device. Packets received on Ten-GigabitEthernet 1/1/5 are copied to Ten-GigabitEthernet 1/1/6, which then forwards the packets to the data monitoring device for analysis. Remote port mirroring In remote port mirroring, the source device is not directly connected to the data monitoring device but copies mirrored packets to the destination device, which forwards them to the data monitoring device. The mirroring source and the mirroring destination reside on different devices and in different mirroring groups. The mirroring group that contains the mirroring source or the mirroring destination is called a "remote source group" or "remote destination group," respectively. The devices between the source devices and destination device are intermediate devices. The mirroring source and the mirroring destination are connected through a Layer 2 network. Therefore, remote port mirroring is also called Layer 2 remote port mirroring. 105

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105
NOTE:
The reflector port is used to enable local mirroring to support multiple monitor ports.
Port mirroring classification and implementation
Port mirroring falls into local port mirroring and remote port mirroring depends on whether the mirroring
source and the mirroring destination are on the same device.
Local port mirroring
In local port mirroring, the source device is directly connected to the data monitoring device and can act
as the destination device to forward mirrored packets to the data monitoring device. The mirroring source
and mirroring destination are on the same device. A mirroring group that contains the mirroring source
and the mirroring destination on the device is called a "local mirroring group."
Figure 33
Local port mirroring implementation
As shown in
Figure 33
, the source port Ten-GigabitEthernet 1/1/5 and monitor port Ten-GigabitEthernet
1/1/6 reside on the same device. Packets received on Ten-GigabitEthernet 1/1/5 are copied to
Ten-GigabitEthernet 1/1/6, which then forwards the packets to the data monitoring device for analysis.
Remote port mirroring
In remote port mirroring, the source device is not directly connected to the data monitoring device but
copies mirrored packets to the destination device, which forwards them to the data monitoring device.
The mirroring source and the mirroring destination reside on different devices and in different mirroring
groups. The mirroring group that contains the mirroring source or the mirroring destination is called a
"remote source group" or "remote destination group," respectively. The devices between the source
devices and destination device are intermediate devices.
The mirroring source and the mirroring destination are connected through a Layer 2 network. Therefore,
remote port mirroring is also called Layer 2 remote port mirroring.
Host
XGE1/1/5
Data monitoring
device
XGE1/1/5
Mirroring process
in the device
Source port
Monitor port
XGE1/1/6
XGE1/1/6
Original packets
Device
Mirrored packets