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MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

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Implementing the DiffServ Tunneling Models in Cisco IOS

This section gives an overview of implementing the different MPLS DiffServ Tunneling models in Cisco IOS. The sample network used here is an MPLS VPN network, because this is the MPLS application used most often today. The configuration shown pertains to only one or two values of the MPLS experimental bits or the IP precedence bits to keep the configuration small. In a real-world network, this configuration might need to be expanded to cover all EXP and precedence bits (DSCP levels).

Example 12-2 shows how to implement the MPLS DiffServ Uniform model in Cisco IOS and demonstrates the configuration needed on the ingress PE. Only precedence 4 is being matched. Precedence 4 is mapped to EXP ...

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