Chapter 30 Layer 2 Protocol Tunneling
MES3500 Series User’s Guide
243
Figure 145 L2PT Network Example
30.1.1 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 145 on
page 243) 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.
30.2 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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