Configuring VLAN-VPN
VLAN-VPN
Configuration Guide
233
1
VLAN-VPN
1.1 Overview
VLAN-VPN (Virtual Private Network) is an easy-to-implement layer 2 VLAN technology, and
it is usually deployed at the edge of the ISP (Internet Service Provider) network.
With VLAN-VPN, when forwarding packets from the customer network to the ISP network,
the switch tags the packets with outer VLAN tags. Thus, packets can be transmitted
through ISP networks with double VLAN tags. In the ISP network, packets are forwarded
according to the outer VLAN tag (VLAN tag of the ISP network), while the inner VLAN tag
is treated as part of the payload. When forwarding packets from the ISP network to the
customer network, the switch remove the outer VLAN tag of the packets. Thus, packets
are forwarded according to the inner VLAN tag (VLAN tag of the customer network) in the
customer network.
The following figure shows the typical application scenario of VLAN-VPN. To realize the
communication between two customer VLANs across the ISP network, you can configure
VLAN-VPN at the ISP edge switches to allow packets from customer VLAN 100 and VLAN
200 to be forwarded through the ISP network with the outer tag of VLAN 1050.
Figure 1-1
Application Scenario of VLAN-VPN
VLAN 200
VLAN 200
VLAN 100
VLAN 100
VLAN 1050
Содержание T2500G-10MPS
Страница 1: ...User Guide T2500G 10MPS 1910012405 REV1 0 1 April 2018...
Страница 24: ...Using the CLI 767 Appendix Default Parameters 773...
Страница 27: ...Part 1 Accessing the Switch CHAPTERS 1 Overview 2 Web Interface Access 3 Command Line Interface Access...
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Страница 145: ...Part 5 Monitoring Traffic CHAPTERS 1 Traffic Monitor 2 Appendix Default Parameters...
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