
C
HAPTER
37
| VLAN Commands
Configuring Voice VLANs
– 1187 –
voice vlan
This command enables VoIP traffic detection and defines the Voice VLAN
ID. Use the
no
form to disable the Voice VLAN.
S
YNTAX
voice vlan
voice-vlan-id
no voice vlan
voice-vlan-id
- Specifies the voice VLAN ID. (Range: 1-4094)
D
EFAULT
S
ETTING
Disabled
C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
◆
When IP telephony is deployed in an enterprise network, it is
recommended to isolate the Voice over IP (VoIP) network traffic from
other data traffic. Traffic isolation helps prevent excessive packet
delays, packet loss, and jitter, which results in higher voice quality. This
is best achieved by assigning all VoIP traffic to a single VLAN.
◆
VoIP traffic can be detected on switch ports by using the source MAC
address of packets, or by using LLDP (IEEE 802.1AB) to discover
connected VoIP devices. When VoIP traffic is detected on a configured
port, the switch automatically assigns the port as a tagged member of
the Voice VLAN.
◆
Only one Voice VLAN is supported and it must already be created on the
switch before it can be specified as the Voice VLAN.
◆
The Voice VLAN ID cannot be modified when the global auto-detection
status is enabled (see the
command.
E
XAMPLE
The following example enables VoIP traffic detection and specifies the Voice
VLAN ID as 1234.
Console(config)#voice vlan 1234
Console(config)#
Enables Voice VLAN security on ports
IC
Displays Voice VLAN settings
PE
Table 155: Voice VLAN Commands
(Continued)
Command
Function
Mode
Summary of Contents for ECS4110-28T
Page 2: ......
Page 4: ......
Page 63: ...FIGURES 63 Figure 428 Configuring VLAN Translation 1177...
Page 64: ...FIGURES 64...
Page 72: ...TABLES 72...
Page 74: ...SECTION I Getting Started 74...
Page 102: ...SECTION II Web Configuration 102 General IP Routing on page 679...
Page 154: ...CHAPTER 4 Basic Management Tasks Resetting the System 154...
Page 198: ...CHAPTER 5 Interface Configuration VLAN Trunking 198 Figure 65 Configuring VLAN Trunking...
Page 272: ...CHAPTER 9 Congestion Control Automatic Traffic Control 272...
Page 286: ...CHAPTER 10 Class of Service Layer 3 4 Priority Settings 286...
Page 420: ...CHAPTER 13 Security Measures DHCP Snooping 420...
Page 566: ...CHAPTER 14 Basic Administration Protocols OAM Configuration 566...
Page 638: ...CHAPTER 15 Multicast Filtering Multicast VLAN Registration for IPv6 638...
Page 662: ...CHAPTER 16 IP Configuration Setting the Switch s IP Address IP Version 6 662...
Page 678: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 678...
Page 792: ...CHAPTER 21 System Management Commands Switch Clustering 792...
Page 822: ...CHAPTER 23 Remote Monitoring Commands 822...
Page 888: ...CHAPTER 24 Authentication Commands PPPoE Intermediate Agent 888...
Page 968: ...CHAPTER 25 General Security Measures Port based Traffic Segmentation 968...
Page 994: ...CHAPTER 26 Access Control Lists ACL Information 994...
Page 1034: ...CHAPTER 28 Link Aggregation Commands Trunk Status Display Commands 1034...
Page 1044: ...CHAPTER 29 Power over Ethernet Commands 1044...
Page 1084: ...CHAPTER 33 UniDirectional Link Detection Commands 1084...
Page 1090: ...CHAPTER 34 Address Table Commands 1090...
Page 1194: ...CHAPTER 37 VLAN Commands Configuring Voice VLANs 1194...
Page 1388: ...CHAPTER 42 CFM Commands Delay Measure Operations 1388...
Page 1410: ...CHAPTER 44 Domain Name Service Commands 1410...
Page 1420: ...CHAPTER 45 DHCP Commands DHCP Relay 1420...
Page 1472: ...CHAPTER 46 IP Routing Commands IPv4 Commands 1472...
Page 1474: ...SECTION IV Appendices 1474...
Page 1502: ...COMMAND LIST 1502...
Page 1513: ......
Page 1514: ...ECS4110 28T ECS4110 28P ECS4110 52T ECS4110 52P E072014 ST R02 150200000929A...