Mpls layer 3 vpns configuration guide, cisco ios release 12. The configuration and deployment of l2 vpn technology is a. Bgp mpls layer 3 vpns practical configuration noction. Cisco vpn solutions center configuration file examples this chapter provides several examples of configuration files used to provision vpn solutions center. Step 2 configure ldp on all the interfaces in the mpls core. Functional and performance testing sample test plans. There is only one mpls header with vpn label 21 because the p router has poped the label 18.
When you add a new site to an mpls layer 3 vpn, you must update the provider edge router that provides services to the customer site. Mpls vpn with ospf here is the lab from mpls implementation book how to set up mpls vpn using ospf between ce and pe routers. The vpn solutions center provisioning engine accesses the configuration files on both the ce and pe to compute the necessary changes to those files that are required to support the service on the pece link. This appendix provides example configuration of the routers involved in an mpls vpn. Mpls layer 2 vpns functional and performance testing. Under the ospf process use the mpls ldp autoconfig command. Provider p routera router in the core of the provider network. Router pe2 removes the inner vpn header 21 and forwards icmp request as a plain ip packet to ce2a 10. Picture 5 depicts the captured traffic on the link between p and pe2 routers, while issuing the ping command from pc1a to pc2b. When used with mpls, the vpn feature allows several sites to interconnect transparently through a service providers network. P routers run mpls switching and do not attach vpn labels an mpls label in each route assigned by the pe router to routed packets. Cisco vpn solutions center configuration file examples.
In order to run mpls you need to enable it, there are two ways to do this. Ces advertise routes to the vpn for all the devices in their site. Mpls layer 3 vpns include the following components. Configuring the upstream and downstream vrfs on the pe router and the spoke pe router example 87 associating vrfs example 87 configuring scalable hubandspoke mpls vpnsbasic configuration example 88 example 89 additional references 90 feature information for configuring scalable hubandspoke mpls vpns 91 assigning an id number to a vpn 93 finding feature information 93. This document provides a sample configuration of a multiprotocol label switching mpls vpn when border gateway protocol bgp or routing information protocol rip is present on the customers site. Mpls configuration step by step cisco mpls tutorial. They are placed at the edge of the mpls backbone of the provider, have direct connectivity to the ce routers, and act as the access point for the customer to the vpn.
Routers belonging to the second group are called provider edge pe routers, or label edge routers lers. The network associated with the sample configuration files is shown in figure a1. Vlan id unique traffic identifier for ce traffic at the entry point to the mpls domain table 3. The ip addresses and network device names included in these examples are generic and are not intended to be used in your network.
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