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Specialized Models User Guide 6 MPLS Model User Guide
Modeler/Release 10.0 SPM-6-7
When an unlabeled packet arrives at an ingress LER, the following sequence
occurs to determine the correct label for the packet:
1) The TE binding is selected based on the packet FEC and the incoming
interface.
2) The packet is checked to make sure that its traffic characteristics conform
to those specified for the TE binding’s traffic trunk.
3) The packet is labeled for and sent through the primary LSP specified for the
TE binding.
Figure 6-6 Configuring TE Bindings
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• EXP <--> Drop Precedence and EXP <--> PHB These attributes specify
which mappings, defined in the MPLS configuration object, are used by the
router.
• LDP Parameters—specifies Label Distribution Protocol parameters used by
the LSR. LDP Parameters is a compound attribute, composed of the
following sub-attributes:
— Discovery Configuration—specifies Hello message parameters
needed to learn of neighboring routers
— Session Configuration—specifies Keep-alive message parameters
used to establish LDP sessions
— Recovery Configuration—specifies how node and link failures are
detected
This weight attribute
configuration uses LER2-LER5
75% of the time and LER2-site9
25% of the time.