Siemens S223 User Manual

UMN:CLI                                                                                                                                                              User  Manual 

SURPASS hiD 6615 S223/S323 R1.5 

184                                                                         A50010-Y3-C150-2-7619 

QinQ or Double Tagging is one way for tunneling between networks 

 

Example of QinQ Configuration 

 

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

802.1Q VLAN Tag

Type/Length

LLC

Data

FCS

TPID 8100

Priority

Canonical

12-bit identifier

Preamble

Destination

Source

802.1Q VLAN Tag

Type/Length

LLC

Data

FCS

VLAN Tag

TPID 8100/9100

Priority

Canonical

12-bit identifier

TPID 8100

Priority

Canonical

12-bit identifier

 

QinQ Frame 

 

Port which connected with Service Provider is Uplink port (internal), and which connected 
with customer is Access port (external). 
 

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 
 

 

By trunk port we mean a LAN port that is configured to operate as an interswitch link/port,