User's Manual

Table Of Contents
Configuration Guide of XGS-5240-Series
180
Switch(Config-Vlan100)#switchport interface ethernet 1/0/2-6
Switch(Config-Vlan100)#exit
Switch(config)#interface ethernet 1/0/11
Switch(Config-If-Ethernet1/0/11)#switchport mode trunk
Switch(Config-If-Ethernet1/0/11)# gvrp
Switch(Config-If-Ethernet1/0/11)#exit
22.2.4 GVRP Troubleshooting
The GARP counter setting for Trunk ports in both ends of Trunk link must be the same,
otherwise GVRP will not work normally. It is recommended to avoid enabling GVRP and RSTP
at the same time in switch. If GVRP needs to be enabled, RSTP function for the ports must be
disabled first.
22.3 Dot1q-tunnel Configuration
22.3.1
Introduction to Dot1q-tunnel
Dot1q-tunnel is also called QinQ (802.1Q-in-802.1Q), which is an expansion of 802.1Q.
Its dominating idea is encapsulating the customer VLAN tag (CVLAN tag) to the service
provider VLAN tag (SPVLAN tag). Carrying the two VLAN tags the packet is transmitted
through the backbone network of the ISP internet, so to provide a simple layer-2 tunnel for the
users. It is simple and easy to manage, applicable only by static configuration, and especially
adaptive to small office network or small scale metropolitan area network using layer-3 switch
as backbone equipment.
SP networks
P
PE1
PE2
CE1
CE2
Trunk connection
Trunk connection
Unsymmetrical
connection
Unsymmetrical
connection
Customer
networks1
Customer
networks2
On the customer port
Trunk VLAN 200-300
This port on PE1 is enabled
QinQ and belong to VLAN3
On the customer port
Trunk VLAN 200-300
This port on PE1 is enabled
QinQ and belong to VLAN3