© Copyright Lenovo 2017 Chapter 8: VLANs 145
AsshowninFigure 6,thetaggedpacketremainsunchangedasitleavestheswitch
throughport5,whichisconfiguredasataggedmemberofVLAN2.However,the
taggedpacketisstripped(untagged)asitleaves theswitchthroughport7,which
isconfiguredasanuntaggedmemberof
VLAN2.
Figure 6. 802.1Qtagging(after802.1Qtagassignment)
Note: Settingtheconfigurationtofactorydefault(CN 4093(config)# boot
configuration-block factory)willresetallnon‐managementportsto
VLAN1.
BS45014A
Port 6 Port 7 Port 8
Port 1
Port 4
Port 5
Port 2 Port 3
802.1Q Switch
Key
Priority
CFI
VID
- User_priority
- Canonical format indicator
- VLAN identifier
PVID = 2
Tagged member
of VLAN 2
Untagged member
of VLAN 2
After
DA
SA
Data
CRC*
(*Recalculated)
Outgoing
untagged packet
changed
(tag removed)
DASADataCRC Tag
VID = 2Priority
16 bits 3 bits 1 bit 12 bits
8100 CFI
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