IES-1248-51 User’s Guide
Chapter 42 IEEE 802.1Q Tagged VLAN Commands
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C
H A P T E R
42
IEEE 802.1Q Tagged VLAN
Commands
This chapter describes the IEEE 802.1Q Tagged VLAN commands.
42.1 Introduction to VLANs
See
for more background information on VLANs.
42.2 IEEE 802.1Q Tagging Types
There are two kinds of tagging:
• Explicit Tagging
A VLAN identifier is added to the frame header that identifies the source VLAN.
• Implicit Tagging
The MAC (Media Access Control) number, the port or other information is used to identify the
source of a VLAN frame.
The IEEE 802.1Q Tagged VLAN uses both explicit and implicit tagging.
It is important for the IES-1248-51 to determine what devices are VLAN-aware and VLAN-
unaware so that it can decide whether to forward a tagged frame (to a VLAN-aware device) or
first strip the tag from a frame and then forward it (to a VLAN-unaware device).
42.3 Filtering Databases
A filtering database stores and organizes VLAN registration information useful for switching
frames to and from the IES-1248-51. A filtering database consists of static entries (Static
VLAN or SVLAN table).
42.3.1 Static Entries (SVLAN Table)
Static entry registration information is added, modified and removed by administrators only.
Содержание IES-1248-51
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Страница 4: ...IES 1248 51 User s Guide 4 Interference Statements and Warnings ...
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Страница 30: ...IES 1248 51 User s Guide 30 List of Figures ...
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Страница 47: ...IES 1248 51 User s Guide Chapter 2 Hardware Installation 47 Figure 6 IES 1248 51 Frame Ground Frame Ground ...
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Страница 88: ...IES 1248 51 User s Guide 88 Chapter 9 Home and Port Statistics Screens ...
Страница 90: ...IES 1248 51 User s Guide 90 Chapter 10 System Information Figure 44 System Info ...
Страница 98: ...IES 1248 51 User s Guide 98 Chapter 12 User Account ...
Страница 104: ...IES 1248 51 User s Guide 104 Chapter 13 Switch Setup ...
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Страница 192: ...IES 1248 51 User s Guide 192 Chapter 30 Syslog ...
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Страница 240: ...IES 1248 51 User s Guide 240 Chapter 38 Commands ...
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Страница 370: ...IES 1248 51 User s Guide 370 Chapter 51 Troubleshooting ...
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