Label binding is the process of, and the rules used to, associate labels with FECs.
LSRs construct label mappings and forwarding tables that comprise two types of labels: labels that are locally assigned and labels that are remotely assigned.
Locally assigned labels are labels that are chosen and assigned locally by the LSR. For example, when the LSR assigns a label for an advertised direct interface. This binding information is communicated to neighboring LSRs. Neighbor LSRs view this binding information as remotely assigned.
Remotely assigned labels are labels that are assigned based on binding information received from another LSR.
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