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Voice VLAN Commands
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Voice VLAN Commands
The Voice VLAN feature enables switch ports to carry voice traffic with an
administrator-defined priority so as to enable prioritization of voice traffic
over data traffic. Using Voice VLAN helps to ensure that the sound quality of
an IP phone is protected from deterioration when the data traffic utilization
on the port is high.
Voice VLAN is the preferred solution for applying QoS to voice traffic in an
enterprise environment. Voice VLAN scales with the number of ports and
does not make significant demands on the switch CPU for classification of
voice traffic. However ,Voice VLAN does require the administrator to perform
the additional configuration step of defining the QoS policy to be applied to
voice traffic.
The switch can be configured to support voice VLAN on a port connecting to
the VoIP phone. When a VLAN is associated with the voice VLAN port, then
the VLAN ID information is passed onto the VoIP phone using the LLDP-
MED mechanism. The voice data coming from the VoIP phone is tagged with
the exchanged VLAN ID; thus, regular data arriving on the switch is given the
default PVID of the port, and the voice traffic is received on a predefined
VLAN. The two types of traffic are therefore segregated so that better service
can be provided to the voice traffic.
When a dot1p priority is associated with the voice VLAN port instead of
VLAN ID, then the priority information is passed onto the VoIP phone using
the LLDP-MED mechanism. Thus, the voice data coming from the VoIP
phone is tagged with VLAN 0 and with the exchanged priority. Regular data
arriving on the switch is given the default priority of the port (default 0), and
the voice traffic is received with higher priority, thus segregating both the
traffic to provide better service to the voice traffic.
The switch can be configured to override the data traffic CoS. This feature
enables overriding the 802.1P priority of the data traffic packets arriving at
the port enabled for voice VLAN. Thus, a rogue client that is also connected
to the voice VLAN port does not deteriorate the voice traffic. Voice VLAN is
recommended for enterprise-wide deployment of voice services on the IP
network.
2CSPC4.XCT-SWUM2XX1.book Page 809 Monday, October 3, 2011 11:05 AM
Содержание PowerConnect 7000 Series
Страница 74: ...74 Contents 2CSPC4 XCT SWUM2XX1 book Page 74 Monday October 3 2011 11 05 AM ...
Страница 164: ...164 Command Groups 2CSPC4 XCT SWUM2XX1 book Page 164 Monday October 3 2011 11 05 AM ...
Страница 238: ...238 Layer 2 Switching Commands 2CSPC4 XCT SWUM2XX1 book Page 238 Monday October 3 2011 11 05 AM ...
Страница 266: ...266 AAA Commands 2CSPC4 XCT SWUM2XX1 book Page 266 Monday October 3 2011 11 05 AM ...
Страница 316: ...316 Auto VoIP Commands 2CSPC4 XCT SWUM2XX1 book Page 316 Monday October 3 2011 11 05 AM ...
Страница 344: ...344 DHCP Layer 2 Relay Commands 2CSPC4 XCT SWUM2XX1 book Page 344 Monday October 3 2011 11 05 AM ...
Страница 352: ...352 DHCP Management Interface Commands 2CSPC4 XCT SWUM2XX1 book Page 352 Monday October 3 2011 11 05 AM ...
Страница 368: ...368 DHCP Snooping Commands 2CSPC4 XCT SWUM2XX1 book Page 368 Monday October 3 2011 11 05 AM ...
Страница 382: ...382 Dynamic ARP Inspection Commands 2CSPC4 XCT SWUM2XX1 book Page 382 Monday October 3 2011 11 05 AM ...
Страница 434: ...434 Ethernet Configuration Commands 2CSPC4 XCT SWUM2XX1 book Page 434 Monday October 3 2011 11 05 AM ...
Страница 454: ...454 Ethernet CFM Commands 2CSPC4 XCT SWUM2XX1 book Page 454 Monday October 3 2011 11 05 AM ...
Страница 468: ...468 Green Ethernet Commands 2CSPC4 XCT SWUM2XX1 book Page 468 Monday October 3 2011 11 05 AM ...
Страница 532: ...532 IPv6 Access List Commands 2CSPC4 XCT SWUM2XX1 book Page 532 Monday October 3 2011 11 05 AM ...
Страница 544: ...544 IPv6 MLD Snooping Commands 2CSPC4 XCT SWUM2XX1 book Page 544 Monday October 3 2011 11 05 AM ...
Страница 558: ...558 IP Source Guard Commands 2CSPC4 XCT SWUM2XX1 book Page 558 Monday October 3 2011 11 05 AM ...
Страница 570: ...570 iSCSI Optimization Commands 2CSPC4 XCT SWUM2XX1 book Page 570 Monday October 3 2011 11 05 AM ...
Страница 578: ...578 Link Dependency Commands 2CSPC4 XCT SWUM2XX1 book Page 578 Monday October 3 2011 11 05 AM ...
Страница 606: ...606 LLDP Commands 2CSPC4 XCT SWUM2XX1 book Page 606 Monday October 3 2011 11 05 AM ...
Страница 700: ...700 QoS Commands 2CSPC4 XCT SWUM2XX1 book Page 700 Monday October 3 2011 11 05 AM ...
Страница 728: ...728 RADIUS Commands 2CSPC4 XCT SWUM2XX1 book Page 728 Monday October 3 2011 11 05 AM ...
Страница 808: ...808 VLAN Commands 2CSPC4 XCT SWUM2XX1 book Page 808 Monday October 3 2011 11 05 AM ...
Страница 814: ...814 Voice VLAN Commands 2CSPC4 XCT SWUM2XX1 book Page 814 Monday October 3 2011 11 05 AM ...
Страница 848: ...848 802 1x Commands 2CSPC4 XCT SWUM2XX1 book Page 848 Monday October 3 2011 11 05 AM ...
Страница 850: ...850 Layer 3 Commands 2CSPC4 XCT SWUM2XX1 book Page 850 Monday October 3 2011 11 05 AM ...
Страница 912: ...912 DHCPv6 Commands 2CSPC4 XCT SWUM2XX1 book Page 912 Monday October 3 2011 11 05 AM ...
Страница 920: ...920 DVMRP Commands 2CSPC4 XCT SWUM2XX1 book Page 920 Monday October 3 2011 11 05 AM ...
Страница 946: ...946 IGMP Proxy Commands 2CSPC4 XCT SWUM2XX1 book Page 946 Monday October 3 2011 11 05 AM ...
Страница 1062: ...1062 IPv6 Routing Commands 2CSPC4 XCT SWUM2XX1 book Page 1062 Monday October 3 2011 11 05 AM ...
Страница 1066: ...1066 Loopback Interface Commands 2CSPC4 XCT SWUM2XX1 book Page 1066 Monday October 3 2011 11 05 AM ...
Страница 1174: ...1174 OSPF Commands 2CSPC4 XCT SWUM2XX1 book Page 1174 Monday October 3 2011 11 05 AM ...
Страница 1234: ...1234 OSPFv3 Commands 2CSPC4 XCT SWUM2XX1 book Page 1234 Monday October 3 2011 11 05 AM ...
Страница 1244: ...1244 Router Discovery Protocol Commands 2CSPC4 XCT SWUM2XX1 book Page 1244 Monday October 3 2011 11 05 AM ...
Страница 1260: ...1260 Routing Information Protocol Commands 2CSPC4 XCT SWUM2XX1 book Page 1260 Monday October 3 2011 11 05 AM ...
Страница 1292: ...1292 Virtual Router Redundancy Protocol Commands 2CSPC4 XCT SWUM2XX1 book Page 1292 Monday October 3 2011 11 05 AM ...
Страница 1294: ...1294 Utility Commands 2CSPC4 XCT SWUM2XX1 book Page 1294 Monday October 3 2011 11 05 AM ...
Страница 1304: ...1304 Auto Install Commands 2CSPC4 XCT SWUM2XX1 book Page 1304 Monday October 3 2011 11 05 AM ...
Страница 1338: ...1338 Captive Portal Commands 2CSPC4 XCT SWUM2XX1 book Page 1338 Monday October 3 2011 11 05 AM ...
Страница 1348: ...1348 CLI Macro Commands 2CSPC4 XCT SWUM2XX1 book Page 1348 Monday October 3 2011 11 05 AM ...
Страница 1366: ...1366 Clock Commands 2CSPC4 XCT SWUM2XX1 book Page 1366 Monday October 3 2011 11 05 AM ...
Страница 1372: ...1372 Command Line Configuration Scripting Commands 2CSPC4 XCT SWUM2XX1 book Page 1372 Monday October 3 2011 11 05 AM ...
Страница 1394: ...1394 Configuration and Image File Commands 2CSPC4 XCT SWUM2XX1 book Page 1394 Monday October 3 2011 11 05 AM ...
Страница 1458: ...1458 Power Over Ethernet Commands 2CSPC4 XCT SWUM2XX1 book Page 1458 Monday October 3 2011 11 05 AM ...
Страница 1478: ...1478 RMON Commands 2CSPC4 XCT SWUM2XX1 book Page 1478 Monday October 3 2011 11 05 AM ...
Страница 1518: ...1518 Sflow Commands 2CSPC4 XCT SWUM2XX1 book Page 1518 Monday October 3 2011 11 05 AM ...
Страница 1578: ...1578 Syslog Commands 2CSPC4 XCT SWUM2XX1 book Page 1578 Monday October 3 2011 11 05 AM ...
Страница 1641: ...System Management Commands 1641 2 3 4 5 2CSPC4 XCT SWUM2XX1 book Page 1641 Monday October 3 2011 11 05 AM ...
Страница 1642: ...1642 System Management Commands 2CSPC4 XCT SWUM2XX1 book Page 1642 Monday October 3 2011 11 05 AM ...
Страница 1646: ...1646 Telnet Server Commands 2CSPC4 XCT SWUM2XX1 book Page 1646 Monday October 3 2011 11 05 AM ...
Страница 1648: ...1648 Terminal Length Commands 2CSPC4 XCT SWUM2XX1 book Page 1648 Monday October 3 2011 11 05 AM ...
Страница 1686: ...1686 Web Server Commands 2CSPC4 XCT SWUM2XX1 book Page 1686 Monday October 3 2011 11 05 AM ...
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Страница 1730: ...www dell com support dell com Printed in the U S A 2CSPC4 XCT SWUM2XX1 book Page 2 Monday October 3 2011 11 05 AM ...