Manual
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64 
9.3.3 Typical Applications of the Dot1q-tunnel 
Scenario: 
Edge switch PE1 and PE2 of the ISP internet forward the VLAN200~300 data between CE1 
and CE2 of the client network with VLAN3. The port1 of PE1 is connected to CE1, port10 is 
connected to public network, the TPID of the connected equipment is 9100; port1 of PE2 is 
connected to CE2, port10 is connected to public network. 
Configuration Item 
Configuration Explanation 
VLAN3 
Port1 of PE1 and PE2. 
dot1q-tunnel 
Port1 of PE1 and PE2. 
tpid 
9100 
Configuration procedure is as follows: 
PE1: 
Switch(config)#vlan 3 
Switch(Config-Vlan3)#switchport interface ethernet 1/0/1 
Switch(Config-Vlan3)#exit 
Switch(Config)#interface ethernet 1/0/1 
Switch(Config-Ethernet1/0/1)# dot1q-tunnel enable 
Switch(Config-Ethernet1/0/1)# exit 
Switch(Config)#interface ethernet 1/0/1 
Switch(Config-Ethernet1/0/1)#switchport mode trunk 
Switch(Config-Ethernet1/0/1)#dot1q-tunnel tpid 0x9100 
Switch(Config-Ethernet1/0/1)#exit 
Switch(Config)# 
PE2: 
Switch(config)#vlan 3 
Switch(Config-Vlan3)#switchport interface ethernet 1/0/1 
Switch(Config-Vlan3)#exit 
Switch(Config)#interface ethernet 1/0/1 
Switch(Config-Ethernet1/0/1)# dot1q-tunnel enable 
Switch(Config-Ethernet1/0/1)# exit 
Switch(Config)#interface ethernet 1/0/1 
Switch(Config-Ethernet1/0/1)#switchport mode trunk 
Switch(Config-Ethernet1/0/1)#dot1q-tunnel tpid 0x9100 
Switch(Config-Ethernet1/0/1)#exit 
Switch(Config)# 










