Figure 13, Port-based vlan assignment, Figure 14 – Nortel Networks 1000ASE-XD User Manual
Page 58: 1q tagging (after port-based vlan assignment)
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Chapter 2 Network configuration
209418-A
Figure 13 Port-based VLAN assignment
As shown in
, the untagged packet is marked (tagged) as it leaves the
switch through port 5, which is configured as a tagged member of VLAN 2. The
untagged packet remains unchanged as it leaves the switch through port 7, which
is configured as an untagged member of VLAN 2.
Figure 14 802.1Q tagging (after port-based VLAN assignment)
Port 6
DA
SA
Data
CRC
BS45011A
Port 7
Port 8
Port 1
Po
rt
4
Po
rt
5
Port 2
Port 3
802.1Q Switch
PVID = 2
Untagged packet
Untagged member
of VLAN 2
Tagged member
of VLAN 2
Before
BS45012A
Port 6
Port 7
Port 8
Port 1
Po
rt
4
Po
rt
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
(unchanged)
DA
SA
Data
CRC*
Tag
VID = 2
Priority
16 bits
3 bits
1 bits
12 bits
8100
CFI