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Specialized Models User Guide 6 MPLS Model User Guide
Modeler/Release 10.0 SPM-6-13
Configuring MPLS in a Network
Configuring MPLS in a network is a three-step process. Before you can run a
simulation using MPLS, you must
1) Create LSPs in the network topology
2) Create FECs and traffic trunks in the MPLS Configuration object
3) Configure LERs to direct packets into the appropriate LSPs
After this basic configuration is in place, you can add QoS/differentiated
services (DiffServ) constraints or traffic shaping parameters.
Creating LSPs
After you create your network topology, you can add LSPs to the network. There
are three methods of adding LSPs to your network:
• From traffic conversation pairs
• By drawing the LSPs in the Project Editor workspace
• From text files
The Update LSP Details operation creates traffic profiles and forward
equivalence classes (FECs) for the LSPs, which you can modify later as you
fine-tune your model.
The model supports both static and dynamic LSPs using the strict and loose
path objects in OPNET. To create LSPs, use the standard procedure for
creating paths as described in the Building Models chapter of the User Guide
manual (Guru product documentation) or the Communication Mechanisms
chapter of the Modeling Concepts manual (Modeler documentation).
You can create dynamic LSPs automatically using the Create LSPs From Traffic
Conversation Pairs utility or manually using the standard procedure for creating
path objects.
The Create LSPs From Traffic Conversation Pairs utility creates LSPs quickly
based on some or all of the traffic conversation pairs in the network.
Procedure 6-1 Creating Dynamic LSPs from Demands
1 From the Protocols > MPLS menu, choose Configure LSPs from Demands.
➥ The Assign IP Addresses dialog box appears.