3com DUA1750-2BAA01 Manual De Usuario

3Com Switch 8800 Configuration Guide 

Chapter 37  BGP/MPLS VPN Configuration

 

37-1 

Traditional VPN, for which layer 2 tunneling protocols (L2TP, L2F and PPTP, and so on.) 

or layer 3 tunnel technology (IPSec, GRE and so on.) is adopted, is a great success 

and is therefore widely used. However, along with the increase of the size of VPNs , the 

deficiency of traditional VPN in such aspects as expansibility and manageability 

becomes more and more obvious. In addition, QoS (Quality of Service) and security 

are also the difficult problem for traditional VPN. 

Using the MPLS technology, service providers can implement the IP-based VPN 

services easily and enable their networks to meet the expansibility and manageability 

requirement for VPN. The VPN constructed by using MPLS also provides the possibility 

for the implementation of value-added service. Multiple VPNs can be formed from a 

single access point, and each VPN represents a different service, making the network 

able to transmit services of different types in a flexible way. 

Product currently provides comparatively complete BGP/MPLS VPN networking 

capabilities: 

z 

Address isolation, allowing the overlap of address of different VPNs and public 

networks. 

z 

Supporting MBGP advertising VPN routing information through public network, 

establishing BGP/MPLS VPN. 

z 

Forwarding VPN data stream over MPLS LSP. 

z 

Providing MPLS VPN performance monitoring and fault detecting tools.