H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur Page 68
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Local port mirroring
In local port mirroring, the mirroring source and the 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 51 Local port mirroring implementation
As shown in Figure 51, the source port GigabitEthernet 1/0/1 and monitor port GigabitEthernet 1/0/2
reside on the same device. Packets of GigabitEthernet 1/0/1 are copied to GigabitEthernet 1/0/2,
which then forwards the packets to the data monitoring device for analysis.
Configuration guidelines
When you configure port mirroring, follow these guidelines:
• You can configure multiple source ports, but only one monitor port for a local mirroring group.
• You can configure multiple source ports for a remote source mirroring group and only one monitor
port for a remote monitor mirroring group.
• A port can serve as a source port for multiple mirroring groups, but cannot serve as the monitor port
for another mirroring group.
• To ensure normal operation of mirroring, do not enable the spanning tree feature on the monitor
port.
• Use a monitor port for port mirroring only. This is to make sure the data monitoring device receives
and analyzes only the mirrored traffic rather than a mix of mirrored traffic and normally forwarded
traffic.
Recommended configuration procedures
To configure local port mirroring:
Ste
p
Remarks
1. Configure a local mirroring
group.
Required.
For more information, see "Configuring a mirroring group."
Select the mir
roring group type local in the Type list.
Host
GE 1/0/1
Data monitoring
device
GE 1/0/1
Mirroring process
in the device
Source port
Monitor port
GE 1/0/2
GE 1/0/2
Original packets
Device
Mirrored packets
- Switching Engine 1
- Preface 3
- Symbols 4
- Network topology icons 4
- Port numbering in examples 4
- Obtaining documentation 5
- Technical support 5
- Documentation feedback 5
- Contents 6
- Configuration wizard 11
- Web overview 18
- Web-based NM functions 19
- Buttons and icons 23
- Page display 24
- Search function 25
- Sort function 27
- Restrictions and guidelines 29
- Username admin admin 33
- Password admin admin 33
- Configuring system name 38
- Click Apply 39
- Maintaining devices 40
- Rebooting the device 41
- Configuring system time 43
- Configuring network time 44
- Configuring date and time 46
- Managing logs 48
- Configuring the log host 49
- Managing the configuration 52
- Saving the configuration 53
- Resetting the configuration 54
- Managing files 55
- Removing a file 56
- Uploading a file 56
- Managing ports 57
- Configuring the switch 63
- Configuring port mirroring 67
- Managing users 75
- Setting the super password 76
- Configuring a loopback test 78
- Configuring VCT 80
- Configuring storm constrain 83
- Configuring RMON 86
- History group 87
- Event group 87
- Alarm group 87
- Configuring a history entry 91
- Configuring an event entry 92
- Configuring an alarm entry 93
- Displaying RMON statistics 94
- Displaying RMON event logs 97
- RMON configuration example 98
- Verifying the configuration 101
- Configuring energy saving 102
- Item Descri 103
- Configuring SNMP 104
- SNMP protocol versions 105
- Enabling SNMP agent 106
- Configuring an SNMP view 108
- Adding rules to an SNMP view 109
- Configuring an SNMP group 111
- Configuring an SNMP user 112
- Network requirements 117
- Configuring the agent 117
- SNMPv3 configuration example 120
- Configuring the NMS 124
- Overview 125
- Field Descri 126
- OAP management 127
- Configuring VLANs 128
- VLAN types 129
- Port-based VLAN 130
- Configuration guidelines 131
- Creating VLANs 134
- Setting the PVID for a port 136
- Selecting a VLAN 137
- Modifying a VLAN 138
- Modifying a port 139
- VLAN configuration example 140
- Configuring Switch B 144
- Configuring VLAN interfaces 145
- Modifying a VLAN interface 146
- Item Descri 149
- Configuring a voice VLAN 150
- Configuring Switch A 157
- Types of MAC address entries 169
- Configuring MSTP 173
- Root port 174
- Path cost 174
- How STP works 175
- Introduction to RSTP 180
- Introduction to MSTP 180
- Basic MSTP concepts 181
- Regional root bridge 183
- Common root bridge 183
- Boundary port 183
- Port roles 183
- Port states 184
- How MSTP works 185
- Protocols and standards 185
- Configuring an MST region 186
- Configuring MSTP globally 188
- Configuring MSTP on a port 190
- MSTP configuration example 194
- Configuring Switch C 198
- Configuring Switch D 198
- Link aggregation modes 201
- Dynamic aggregation mode 202
- Guidelines 202
- Setting LACP priority 207
- Configuring LLDP 213
- LLDPDUs 214
- Operating modes of LLDP 217
- How LLDP works 217
- Enabling LLDP on ports 219
- LLDP configuration examples 233
- Managing services 246
- Using diagnostic tools 249
- Traceroute operation 250
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