H3c-technologies H3C WX5500E Series Access Controllers Bedienungsanleitung Seite 150
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Configuring a voice VLAN
Overview
A voice VLAN is dedicated to voice traffic. After the ports connecting to voice devices are assigned to a
voice VLAN, the system automatically modifies the QoS parameters for the voice traffic. This improves
transmission priority and ensures voice quality.
Common voice devices include IP phones and integrated access devices (IADs). Only IP phones are used
in the voice VLAN configuration examples in this document.
OUI addresses
A device determines whether a received packet is a voice packet by examining its source MAC address.
If the source MAC address of a received packet matches an organizationally unique identifier (OUI) in
the voice device OUI list maintained by the switch, the packet is regarded as a voice packet.
You can remove default OUI addresses and if needed, add them to the OUI list after their removal. You
can add OUI addresses to the OUI list maintained by the device, or use the default OUI list shown
in Table 46 f
or voice traffic identification.
Table 46 The default OUI list
Number OUI Address
Vendor
1 0001-e300-0000 Siemens phone
2 0003-6b00-0000 Cisco phone
3 0004-0d00-0000 Avaya phone
4 00d0-1e00-0000 Pingtel phone
5 0060-b900-0000 Philips/NEC phone
6 00e0-7500-0000 Polycom phone
7 00e0-bb00-0000 3Com phone
An OUI address is usually the first 24 bits of a MAC address (in binary format). It is a globally unique
identifier assigned to a vendor by the IEEE. However, OUI addresses are used by the system to determine
whether received packets are voice packets and they are the results of the AND operation of a MAC
address and a mask in this document. For more information, see "Adding OUI addresses to the OUI list."
Voice VLAN assignment modes
A port connected to a voice device (for example, an IP phone) can be assigned to a voice VLAN in one
of the following modes:
• Automatic mode—The system matches the source MAC addresses in the untagged packets sent by
the IP phone upon its power-on against the OUI list. If a match is found, the system automatically
assigns the receiving port to a voice VLAN, issues ACL rules, and configures the packet precedence.
- 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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