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VLAN Commands
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VLAN Commands
PowerConnect 802.1Q VLANs are an implementation of the Virtual Local
Area Network, specification 802.1Q. Operating at Layer 2 of the OSI model,
the VLAN is a means of parsing a single network into logical user groups or
organizations as if they physically resided on a dedicated LAN segment of
their own. In reality, this virtually defined community may have individual
members scattered across a large, extended LAN. The VLAN identifier is part
of the 802.1Q tag, which is added to an Ethernet frame by an 802.1Q-
compliant switch or router. Devices recognizing 802.1Q-tagged frames
maintain appropriate tables to track VLANs. The first 3 bits of the 802.1Q tag
are used by 802.1p to establish priority for the packet.
PowerConnect supports 802.1Q VLANs. As such, ports may simultaneously
belong to multiple VLANs. VLANs allow a network to be logically segmented
without regard to the physical locations of devices in the network.
PowerConnect switching supports up to 1024 VLANs for forwarding.
VLANs can be allocated by subnet and netmask pairs, thus allowing
overlapping subnets. For example, subnet 10.10.128.0 with Mask
255.255.128.0 and subnet 10.10.0.0 with Mask 255.255.0.0 can have different
VLAN associations.
Double VLAN Mode
An incoming frame is identified as tagged or untagged based on Tag Protocol
Identifier (TPID) value it contains. The 802.1Q standard specifies a TPID
value (0x8100) to recognize an incoming frame as tagged or untagged. Any
valid Ethernet frame with a value 0x8100 in the 12th and 13th bytes is
recognized as tagged frame. 802.1Q switches check the 12th and 13th bytes to
decide the tag status of incoming frame.
The PowerConnect switching component can be configured to enable the
port in double-VLAN (DVLAN) mode. In this mode switch looks for 12th,
13th, 16th, and 17th bytes for the tag status in the incoming frame. The outer
tag (S-TAG) TPID is identified with the 12th and 13th bytes values. The
inner tag (C-TAG) TPID is identified with 16th and 17th bytes values. These
2CSPC4.XCT-SWUM2XX1.book Page 769 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 ...
Страница 1729: ...2CSPC4 XCT SWUM2XX1 book Page 1 Monday October 3 2011 11 05 AM ...
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 ...