155
Configuring MPLS L3VPN
This chapter describes MPLS L3VPN configuration.
Overview
MPLS L3VPN is a L3VPN technology used to interconnect geographically dispersed VPN sites.
MPLS L3VPN uses BGP to advertise VPN routes and uses MPLS to forward VPN packets over a
service provider backbone.
MPLS L3VPN provides flexible networking modes, excellent scalability, and convenient support for
MPLS QoS and MPLS TE.
Basic MPLS L3VPN architecture
Figure 40 Basic MPLS L3VPN architecture
A basic MPLS L3VPN architecture has the following types of devices:
•
Customer edge device
—A CE device resides on a customer network and has one or more
interfaces directly connected to a service provider network. It does not support VPN or MPLS.
•
Provider edge device
—A PE device resides at the edge of a service provider network and
connects to one or more CEs. All MPLS VPN services are processed on PEs.
•
Provider device
—A P device is a core device on a service provider network. It is not directly
connected to any CE. A P device has only basic MPLS forwarding capability and does not
handle VPN routing information.
MPLS L3VPN concepts
Site
A site has the following features:
•
A site is a group of IP systems with IP connectivity that does not rely on any service provider
network.
VPN 1
CE
Site 1
VPN 2
CE
CE
CE
Site 3
VPN 2
PE
VPN 1
Site 2
Site 4
PE
PE
P
P
P
P
Содержание FlexNetwork 5510 HI Series
Страница 9: ...vii Remote support 460 Documentation feedback 460 Index 462 ...
Страница 318: ...309 Request list 0 Retransmit list 0 ...
Страница 363: ...354 Verify that CE 1 and CE 2 can ping each other Details not shown ...
Страница 446: ...437 The MCE has redistributed the OSPF routes of the two VPN instances into the EBGP routing tables of PE 1 ...