IBM 6 MPLS - Manual (Page 3)

Specialized Models User Guide 6 MPLS Model User Guide
Modeler/Release 10.0 SPM-6-3
Node Models
The MPLS model suite supports workstation, server, router, and link models
from the standard model library. The LER (Label Edge Router) and LSR (Label
Switching Router) node models in the MPLS object palette are preconfigured to
support MPLS. However, you can configure any of the router models in the
standard model library to model LERs and LSRs.
Figure 6-1 MPLS Object Palette
Model Attributes
Global MPLS attributes, which are used to configure network-wide MPLS
parameters, are grouped in the MPLS configuration object. Router-specific
MPLS attributes are grouped in the MPLS Parameters attribute on each router.
They are described in
Router Attributes on page SPM-6-6.
MPLS Configuration Object Attributes
Some of the important MPLS configuration object attributes are described
below.
• FEC Specifications This attribute specifies the Forwarding Equivalence
Class (FEC) parameters used by MPLS in the network. FECs classify and
group packets so that all packets in a group are forwarded the same way.
FECs are based on any of the IP header fields—ToS, Protocol, Source
Address Range, Destination Address Range, Source Port, and Destination
Port can all be used to define a FEC. Figure 6-2
Specifying FEC Attributes
on page SPM-6-4 shows the attribute sequence for defining an FEC.