LSR (Label Switching Router)

In Multiprotocol Label Switching (MPLS), a router in the network

core that forwards packets along paths consistent with the labels inserted into packet headers by Label Edge Routers (LERs) as they entered the network. The LERs employ a Label Distribution Protocol (LDP) to distribute labels to the LSRs in the network core. As the LSRs receive the packets, they examine the short labels, compare them against a label database, switch the existing label for a new one, and quickly forward the packet across an appropriate link to the next LER. The process is repeated by each LSR until the packet reaches the egress LER, which strips the tag away as the packet exits the network. See also core, header, link, LSP, LDP, LER, MPLS, packet, path, router, and switch.

• central office exchange code
• central office exchange (COE)
• central office prefix
• central processing unit (CPU)
• Centrex (CTX)
• centum call seconds (CCS)
• CEPT
• CEPT-1
• CEPT (Conférence Européenne des administrations des Postes et des Télécommunications)
• Cerberus
• CER (Cell Error Ratio)
• CERN
• CERN (l’Conseil Européen pour la Recherche Nucléaire)
• CERN (l’Conseil Européen pour la Recherche Nucléaire)
• CERT
• CERT (Computer Emergency Response Team)
• CERT (Computer Emergency Response Team)
• certificate authority (CA)
• Challenge Handshake Authentication Protocol (CHAP)
• channel
• channel-associated signaling (CAS)
• channel bank
• channelized voice over DSL (CVoDSL)
• channel service unit (CSU)
• channel width