tailieunhanh - Configuring Multiprotocol Label Switching

This chapter describes how to configure your network to perform Multiprotocol Label Switching (MPLS). For a complete description of the MPLS commands, see the chapter “MPLS Commands” in the Cisco IOS Switching Services Command Reference. For documentation of other commands that appear in this chapter, you can use the command reference master index or search online. | Configuring Multiprotocol Label Switching This chapter describes how to configure your network to perform Multiprotocol Label Switching MPLS . For a complete description of the MPLS commands see the chapter MPLS Commands in the Cisco IOS Switching Services Command Reference. For documentation of other commands that appear in this chapter you can use the command reference master index or search online. This chapter contains the following sections Configuring MPLS Levels of Control Configuring MPLS Traffic Engineering Configuring MPLS Traffic Engineering Paths Configuring MPLS Virtual Private Networks Configuring MPLS CoS Backbone Support Configuring MPLS CoS Configuring the Label Switch Controller MPLS Configuration Examples Configuring MPLS Levels of Control This section describes three sample cases where MPLS is configured on Cisco 7500 7200 series routers. These cases show the levels of control possible in selecting how MPLS is deployed in a network. Table 16 lists the cases including the steps to perform MPLS and their corresponding Cisco IOS CLI commands. Cisco IOS Switching Services Configuration Guide XC-75 Configuring Multiprotocol Label Switching Configuring MPLS Levels of Control Table16 MPLS Levels of Control Levels of Control Examples Describes Example 1 Enable MPLS Incrementally in a Network The steps necessary for incrementally deploying MPLS through a network assuming that packets to all destination prefixes should be label switched. Example 2 Route Labeled Packets to Network A Only The mechanism by which MPLS can be restricted such that packets are label switched to only a subset of destinations. Example 3 Limit Label Distribution on a MPLS Network The mechanisms for further controlling the distribution of labels within a network. For more information about the Cisco IOS CLI commands see the chapter MPLS Commands in the Cisco IOS Switching Services Command Reference. Figure 21 shows a router-only MPLS network with Ethernet interfaces. The following .