VLAN
VLAN – Configuration
Microsemi PDS-408G Web Management User Guide Ver. 1.0.1, 03-2019
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Figure 6-2: VLAN configuration (global plus per-port)
6.2.1
Switch VLAN Terminology - explained
The table below attempts to simplify some of the VLAN terminology used in this chapter. To simplify
term description, some configuration parameters will be used with real values rather than using their
general term.
Term
Description
Ingress
Received packet
Egress
Transmitted packet
TPID = Tag
Protocol
Identifier
The first two out of four-byte of VLAN tagging. Typically, it should be 0x8100 followed
by additional two-byte VLAN-ID. In case of Q-in-Q 802.1ad double VLAN tagging it
should be 0x88A8
Valid VLAN-
ID range
Valid VLAN-ID numbers range from 1-4095. VLAN-ID number 0, also known as VLAN
Priority Tag is an exception. It is used typically by VoIP systems to prioritize VoIP traffic
over regular data traffic.
VLAN tag is made of four bytes. 1
st
two bytes=0x8100 followed by customer VLAN-ID
tag)
VLAN
Priority Tag
VLAN-ID #0 used typically by VoIP system to mark VoIP priority packets
Native VLAN
Packet with no VLAN tagging
C-Tag
Customer VLAN-ID tag.
S-Tag
Service provider
encapsulation of original
customer C-Tag VLAN-ID
with another VLAN-ID
named S-Tag. Double