25.2.2 Configuring VLAN tunneling
- <Structure of this section>
(1) Access line and backbone line settings
- Points to note
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The VLAN tunneling functionality uses a port VLAN to set an access line as a tunneling port, and a backbone line as a trunk port.
Command examples
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(config)# interface gigabitethernet 1/0/1
Switches to the Ethernet interface configuration mode for port 1/0/1.
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(config-if)# switchport mode dot1q-tunnel
(config-if)# switchport access vlan 10
Sets port 1/0/1 as a tunneling port. Then, sets VLAN 10.
For details about configuring trunk ports, see 24.4 Configuring port VLAN.
(2) Configuring Jumbo Frames for the Backbone Line
- Points to note
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Because backbone lines stack VLAN tags, they handle frames at least 4 bytes larger than usual. Accordingly, jumbo frames need to be set.
- Command examples
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For jumbo frame configuration, see section 20.3.7, Jumbo Frame Configuration.