Mpls fundamentals luc de ghein example 10-4

MPLS FUNDAMENTALS LUC DE GHEIN EXAMPLE 10 4 HOW TO

The router used is CISCO891-K9 with image 4.bin installed.Р”В®ach VRF Instance will have two Layer3 routed interfaces associated with it as shown below. We will create РІР‚Сљ VRF IntranetРІР‚Сњ and РІР‚Сљ VRF ExtranetРІР‚Сњ for the two networks. Therefore we can isolate the two Layer3 networks using VRF Lite. The company security team demanded that the Wi-Fi connection must be totally separated from the local intranet network, so that guests donРІР‚в„ўt have access to the local network. We have a Cisco 891 border router with an Intranet connection for employeesРІР‚в„ў computers andР’В company servers and also we need to offer internet connectivityР’В for a Wi-Fi connection to allow guests to connect to the internet.

MPLS FUNDAMENTALS LUC DE GHEIN EXAMPLE 10 4 HOW TO

To demonstrate how to use this feature lets see the following simplified scenario: Network Scenario using Cisco 891 and VRF LiteР”В¬onsider the scenario depicted on the diagram above. Each routing table (VRF instance) is isolated from the other VRF instances. With VRF Lite, you can have separate routing tables on the same physical router device. Now, although VRFs and MPLS are usually configured on high-end ISP routers, you can still use this feature on some smaller Cisco ISR routers in a simplified manner called VRF Lite and have the same advantages. If you want to read about this technology, one good book to start with is MPLS Fundamentals wrote by Luc De Ghein. They are discussed in the chapters needed for your CCIE R&S certification.

Also, from what I know, MPLS and VRFs are not examined at the CCNA or CCNP R&S level. If you donРІР‚в„ўt work in an ISP environment you will not encounter this technology very often. VRF (Virtual Routing and Forwarding) is traditionally associated with IP MPLS technology whereby an ISP creates Layer3 (or Layer2) VPNs for customers using VRF.Р”В¬onsider a VRF as a separate routing instance (and separate routing table) on the same network device holding the IP routes for each customer which are isolated from the other customers.Р”В®ach VRF is like a separate virtual router with its own routing table on the same physical router. VRFs employ essentially the same concept as VLANs and Trunking, but at Layer 3. In this tutorial, we will discuss traffic isolation at Layer3 level using VRF Lite on Cisco routers. In the previous post, we have discussed about isolating traffic using the private VLAN feature at Layer2 level.

Mpls fundamentals luc de ghein example 10-4