Qinq; Fig. 8.2 Example Of Qinq Configuration; Fig. 8.3 Qinq Frame - Siemens S223 User Manual

UMN:CLI
8.1.8
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QinQ

QinQ or Double Tagging is one way for tunneling between networks
Customer A
VLAN 200
T U
Tunnel Port
Tunnel Port
T U
VLAN 201
T: Tagged
Customer B
U: Untagged
Example of QinQ Configuration
Fig. 8.2
If QinQ is configured on the hiD 6615 S223/S323, it transmits packets adding another Tag
to original Tag. Customer A group and customer B group can guarantee security because
telecommunication is done between each VLANs at Double Tagging part.
Double tagging is implemented with another VLAN tag in Ethernet frame header.
Preamble Destination Source
Preamble Destination Source
TPID 8100/9100 Priority
QinQ Frame
Fig. 8.3
Port which connected with Service Provider is Uplink port (internal), and which connected
with customer is Access port (external).
Tunnel Port
By tunnel port we mean a LAN port that is configured to offer 802.1Q-tunneling support. A
tunnel port is always connected to the end customer, and the input traffic to a tunnel port
is always 802.1Q tagged traffic. The different customer VLANs existing in the traffic to a
tunnel port shall be preserved when the traffic is carried across the network
Trunk Port
By trunk port we mean a LAN port that is configured to operate as an interswitch link/port,
VLAN 641
T T
Trunk Port
802.1Q VLAN Tag Type/Length
TPID 8100 Priority Canonical
VLAN Ethernet Frame
VLAN Tag 802.1Q VLAN Tag
Canonical 12-bit identifier
Ethernet Frame using 802.1Q Tunneling
SURPASS hiD 6615 S223/S323 R1.5
PVID 641
U
Tunnel Port
T T
Trunk Port
Tunnel Port
U
LLC Data
12-bit identifier
Type/Length LLC
TPID 8100 Priority Canonical
A50010-Y3-C150-2-7619
User Manual
Customer A
VLAN 200
T
T
VLAN 201
Customer B
FCS
Data FCS
12-bit identifier