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LDP (Label Distribution Protocol)

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LDP (Label Distribution Protocol) is a protocol used in MPLS (Multiprotocol Label Switching) environments by LSR (Label Switching Routers) to inform other LSRs of the label assignment they have made. LDP allows LSRs to agree with one another on the meaning of labels so that one device knows which label to use in order to forward traffic through another device. RFC 3036 (LDP Specification, January 2001) and RFC 3037 (LDP Applicability, January 2001) describe LDP. Refer to "MPLS (Multiprotocol Label Switching)" for more information.

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