Configuring VLANs
579
• 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. By this method, the voice data coming from the VoIP phone
is tagged with the exchanged VLAN ID. Untagged data arriving on the
switch is given the default PVID of the port, and the voice traffic is
received tagged with the pre-defined VLAN. As a result, both kinds of
traffic are segregated in order to provide better service to the voice traffic.
• When a dot1p priority is associated with the Voice VLAN port instead of a
VLAN ID, then the priority information is passed onto the VoIP phone
using the LLDP-MED mechanism. By this method, the voice data coming
from the VoIP phone is tagged with VLAN 0 and with the exchanged
priority; thus regular data arriving on the switch is given the default
priority of the port (default 0), and the voice traffic is received with a
higher priority.
You can configure the switch to override the data traffic CoS. This feature
can override the 802.1 priority of the data traffic packets arriving at the port
enabled for Voice VLAN. Therefore, any rogue client that is also connected to
the Voice VLAN port does not deteriorate the voice traffic.
Voice VLAN and LLDP-MED
The interactions with LLDP-MED are important for Voice VLAN:
• LLDP-MED notifies the Voice VLAN component of the presence and
absence of a VoIP phone on the network.
• The Voice VLAN component interacts with LLDP-MED for applying
VLAN ID, priority, and tag information to the VoIP phone traffic.
Additional VLAN Features
The PowerConnect 7000 Series switches also support the following VLANs
and VLAN-related features:
• VLAN routing interfaces — See "Configuring Routing Interfaces" on
page 843
• Guest VLAN — See "Configuring 802.1X and Port-Based Security" on
page 505
Содержание PowerConnect 7024
Страница 134: ...134 Setting Basic Network Information ...
Страница 290: ...290 Managing General System Settings Figure 11 14 SNTP Servers Table ...
Страница 348: ...348 Configuring SNMP ...
Страница 430: ...430 Monitoring Switch Traffic ...
Страница 444: ...444 Configuring iSCSI Optimization ...
Страница 521: ...Configuring 802 1X and Port Based Security 521 Figure 19 8 Configure Port Security Settings 5 Click Apply ...
Страница 538: ...538 Configuring 802 1X and Port Based Security ...
Страница 585: ...Configuring VLANs 585 Figure 21 5 Add Ports to VLAN 4 Click Apply 5 Verify that the ports have been added to the VLAN ...
Страница 594: ...594 Configuring VLANs Figure 21 16 GVRP Port Parameters Table ...
Страница 600: ...600 Configuring VLANs Figure 21 23 Double VLAN Port Parameter Table ...
Страница 658: ...658 Configuring the Spanning Tree Protocol ...
Страница 693: ...Configuring Port Based Traffic Control 693 Figure 24 3 Storm Control 5 Click Apply ...
Страница 780: ...780 Configuring Connectivity Fault Management ...
Страница 804: ...804 Snooping and Inspecting Traffic Figure 27 17 DAI Interface Configuration Summary ...
Страница 818: ...818 Snooping and Inspecting Traffic ...
Страница 836: ...836 Configuring Link Aggregation ...
Страница 882: ...882 Configuring DHCP Server Settings ...
Страница 916: ...916 Configuring L2 and L3 Relay Features Figure 33 3 DHCP Relay Interface Summary ...
Страница 924: ...924 Configuring L2 and L3 Relay Features Figure 33 12 IP Helper Statistics ...
Страница 930: ...930 Configuring L2 and L3 Relay Features ...
Страница 1004: ...1004 Configuring OSPF and OSPFv3 ...
Страница 1044: ...1044 Configuring VRRP ...
Страница 1057: ...Configuring IPv6 Routing 1057 Figure 37 9 IPv6 Route Preferences ...
Страница 1064: ...1064 Configuring IPv6 Routing ...
Страница 1084: ...1084 Configuring DHCPv6 Server and Relay Settings ...
Страница 1091: ...Configuring Differentiated Services 1091 Figure 39 5 DiffServ Class Criteria ...
Страница 1114: ...1114 Configuring Differentiated Services ...
Страница 1130: ...1130 Configuring Class of Service ...
Страница 1136: ...1136 Configuring Auto VoIP ...
Страница 1216: ...1216 Managing IPv4 and IPv6 Multicast ...