Chapter 27 Layer 2 Protocol Tunneling
GS1920 Series User’s Guide
228
Figure 167 L2PT Network Example
27.1.2.1 Layer 2 Protocol Tunneling Mode
Each port can have two layer 2 protocol tunneling modes, Access and Tunnel.
• The Access port is an ingress port on the service provider's edge device (1 or 2 in Figure 167 on
page 228) and connected to a customer switch (A or B). Incoming layer 2 protocol packets
received on an access port are encapsulated and forwarded to the tunnel ports.
• The Tunnel port is an egress port at the edge of the service provider's network and connected to
another service provider’s switch. Incoming encapsulated layer 2 protocol packets received on a
tunnel port are decapsulated and sent to an access port.
27.2 Configuring Layer 2 Protocol Tunneling
Click Advanced Application > Layer 2 Protocol Tunneling in the navigation panel to display the
screen as shown.
1
2
A
B
Service Provider's
Network
C
D
STP
STP
STP
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