Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

Figure 74: LSP Creation for BGP/MPLS VPN
The PE 1–PE 2 LSP carries traffic only from PE 1 to PE 2, using label 21 for the PE 1 to P 1
link, label 19 for the P 1 to P 2 link, and label 46 for the P 2 to PE 2 link. PE 1 can forward
data packets along the LSP to PE 2 and its customer sites.
Similarly, the PE 2–PE 1 LSP carries traffic only from PE 2 to PE 1, using label 58 for the
PE 2 to P 2 link, label 12 for the P 2 to P 1 link, and label 37 for the P 1 to PE 1 link. PE 2 can
forward data packets along the LSP to PE 1 and its customer sites.
Example: Data
Transport
The process of data transport is shown in Figure 75 on page 396. PE 1 has already received
announcements from PE 2; an LSP has been established between PE 1 and PE 2.
Figure 75: Traffic Across the MPLS Backbone of a BGP/MPLS VPN
Copyright © 2010, Juniper Networks, Inc.396
JunosE 11.2.x BGP and MPLS Configuration Guide

Juniper JUNOSE 11.2.X BGP AND MPLS Specifications

General

Brand	Juniper
Model	JUNOSE 11.2.X BGP AND MPLS
Category	Software
Language	English