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Configuring 802.1Q Tagging

308623-14.00 Rev 00

5-5

In contrast, Figure 5-3 depicts a topology in which the same three VLANs share a

common connection to the adjacent router. This common connection is enabled by

a packet encapsulation format specified in IEEE 802.1Q, Draft Standard for

Virtual Bridged Local Area Networks. This packet encapsulation format is

referred to as 802.1Q tagging.

Figure 5-3. Connecting VLANs Using 802.1Q Tagging

VLAN

device

SN0021A

Router

Marketing

IP VLAN

Engineering

IP VLAN

Sales

all-protocol VLAN

Single untagged port serves the

Marketing and Sales VLANs

Traffic flow

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Avaya Configuring Ethernet, FDDI, and Token Ring Services Manual do Utilizador Página 81