What is a bgp or mpls vpn – Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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What is a BGP or MPLS VPN
6
This chapter describes how to configure BGP or MPLS VPNs on devices. BGP or MPLS VPNs as
defined by RFC 2547 can be used by internet service providers to provide remote wide-area
connectivity services using an MPLS domain for data traffic and IBGP to distribute routing
information. Each customer network can be completely segregated from every other customer
network while sharing the same infrastructure.
NOTE
MPLS cannot be configured on the system globally when a NI-MLX-10Gx8-D card is installed.
This chapter is divided into the following sections:
•
provides a basic description of BGP VPNs and an example. This
section also lists the IETF RFCs and Internet Drafts supported by the implementation of BGP or
MPLS VPNs.
•
“BGP or MPLS VPN components and what they do”
explains the software and hardware
components that make up BGP or MPLS VPNs, including Customer Edge Router (CE), Provider
Edge Routers (PE) and Virtual Routing and Forwarding (VRF) tables.
•
explains basic concepts about BGP or MPLS VPNs, including
how routes are advertised and discovered, how the VRF manages packet forwarding, and how
LSPs are employed to switch traffic across a MPLS domain.
•
“Configuring BGP VPNs on a PE”
describes how to configure a BGP or MPLS VPN. In this
section, the basic configuration steps of a BGP VPN are described.
•
“Displaying BGP or MPLS VPNv4 information”
“Displaying BGP or MPLS VRF information”
“Displaying additional BGP or MPLS VPN information”
provide information about the display
command the user can use to manage a BGP or MPLS VPNv4 network.
•
“BGP or MPLS VPN sample configurations”
provide detailed examples of network
configurations and examples of feature configurations.
What is a BGP or MPLS VPN
MPLS provides scalable and efficient switching over an indeterminate group of devices along a
predetermined Labeled Switch Path (LSP). Using MPLS, LSPs can be set statically or determined
dynamically by the ISPs to provide traffic engineering features. BGP or MPLS VPNs build on this
infrastructure to provide virtual-circuit connectionless service between remote sites. Using a
Displaying BGP
or MPLS VPNv4
Information
Yes
Yes
No
a
Yes
a
Yes
No
Yes
IPv4 VPN CAM
Optimization
Yes
Yes
No
No
No
No
No
a.
On Brocade NetIron CES devices, both ME_PREM and L3_PREM licenses are required to support L3 VPN.
TABLE 106
Supported BGP or MPLS VPN features (Continued)
Features
supported
Brocade
NetIron XMR
Series
Brocade
MLX Series
Brocade
NetIron CES
2000 Series
BASE
package
Brocade
NetIron CES
2000 Series
ME_PREM
package
Brocade
NetIron CES
2000 Series
L3_PREM
package
Brocade
NetIron CER
2000 Series
Base
package
Brocade
NetIron CER
2000 Series
Advanced
Services
package