3Com Switch 8800 Family Configuration Guide
634 CHAPTER 52: VPLS CONFIGURATION
Basic VPLS Network
Architectures
There are two kinds of VPLS network architectures: PW logical
multipoint-to-multipoint connection architecture and hierarchical architecture.
Figure 152 depicts a VPLS network architecture with PW logical
multipoint-to-multipoint connection.
Figure 152 VPLS network with PW logical multipoint-to-multipoint connection
As shown in Figure 152, VPLS can provide point-to-multipoint connection service
like a L3VPN. It can learn MAC addresses and exchange packets between multiple
sites. In addition, it keeps the forwarding tables of the individual VPNs
independent with each other and allows MAC address overlap between VPNs.
Figure 153 depicts a hierarchical VPLS network architecture.
UPE User Facing PE
VLL Virtual Leased Line
VPLS Virtual Private LAN Service
VSI Virtual Switching Instance
LSP Label Switched Path
Table 568 Acronyms
Acronym Full name
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
MPLS
㔥㒰
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
MPLS
network
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
MPLS
㔥㒰
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
MPLS
㔥㒰
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
VPN 1
Site 1
CE1
CE2
CE3
CE4
CE5
CE6
VPN 2
Site 2
VPN 1
Site 2
VPN 1
Site 3
VPN 2
Site 1
PE2
PE3
PE1
PE4
MPLS
network