Dot1Q-Tunnel Troubleshooting; Protocol Vlan Configuration; Protocol Vlan Introduction - Digitalchina Networks DCS-3950 series Manual

DCS-3950 (Config-Ethernet0/0/10)#exit
DCS-3950 (Config)#
PE2:
DCS-3950 (Config)#vlan 3
DCS-3950 (Config-Vlan3)#switchport interface ethernet 0/0/1
DCS-3950 (Config-Vlan3)#exit
DCS-3950 (Config)#dot1q-tunnel enable
DCS-3950 (Config)#interface ethernet 0/0/1
DCS-3950 (Config-Ethernet0/0/1)#switchport dot1q-tunnel mode customer
DCS-3950 (Config-Ethernet0/0/1)#exit
DCS-3950 (Config)#interface ethernet 0/0/10
DCS-3950 (Config-Ethernet0/0/10)#switchport mode trunk
DCS-3950 (Config-Ethernet0/0/10)#switchport dot1q-tunnel mode uplink
DCS-3950 (Config-Ethernet0/0/10)#exit
DCS-3950 (Config)#

9.3.5 Dot1q-tunnel Troubleshooting

This function cannot be used simultaneously with private-vlan（refer to session
9.2.2.9）.
Customer port mode has to be configured on access ports, while the uplink port mode
has to be configured on trunk ports.
It is recommened that using the uplink pord mode on 1000bps ports to reach the
expected transimission rate of uplink ports and guarantee the high-speed operation of
network.

9.4 Protocol VLAN Configuration

9.4.1 Protocol VLAN Introduction

To be simple and clear, Protocol VLAN mirrors packets without tags to VLAN
according to their protocol types, instead of determining their VLAN identity according to
the physical ports of the switches they connect to. After configuring the Protocol VLAN, the
switch will check the packets received on the ports, designating a VLAN membership to
them based on their protocol types and encapsulation types. For example, after
configuring the IPV4 protocol VLAN encapsulated by ehternet II, when receiving a packet
of this kind without a VLAN tag, it will be classified as a member of the VLAN specified by
IP protocol.
Protocol VLAN filter is only applied to the received packets without a VLAN tag. The
packets with VLAN tags received on the same port will not be affected and will keep their
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