Restrictions When Using Double-Tagged Vlans; Configuring Double-Tagged Vlans - Allied Telesis SwitchBlade x908 Series Software Reference Manual

VLAN Introduction

Restrictions when using Double-Tagged VLANs

Restrictions when double-tagged VLANs are implemented are:
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Configuring Double-Tagged VLANs

You need a special feature licence to use double-tagged VLANs. Contact your authorized
Allied Telesis distributor or reseller for more information.
Turn on Jumbo frame support
Adding the S-Tag can result in frame sizes that exceed the maximum of 1522 bytes. In order to
cope with these larger than normal frames, you should turn on Jumbo packet support on all
devices running within the service provider network.
Use the following command to reboot the device to enable the Jumbo frame support:
To create the VLANs to be nested
Step 1:
Step 2:
16.6
Ethernet bridging is based on the S-Tag VID instead of the packet C-Tag VID. The packets
C-Tag VID does not change
ARP packet trapping is restricted.
hardware filtering does not work above MAC address level
awplus#
awplus(config)#
awplus#
Create, and enable, service provider VLANS 10 and 20.
awplus#
awplus(config)#
awplus(config-vlan)#
Configure ports 1.0.1 and 102 as a provider-port members of of
VLAN 10 and 20.
awplus#
awplus(config)#
awplus(config)#
awplus(config)#
awplus(config)#
awplus(config-if)#
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
configure terminal
platform jumbo frame
reboot
configure terminal
vlan database
vlan 10, 20 state enable
configure terminal
interface port port1.0.1-port1.0.2
switchport mode trunk
switchport trunk allowed vlan add 10
switchport trunk allowed vlan add 20
switchport vlan-stacking provider-port
C613-50007-01 REV B