Label Switch Router

A Label Switch Router ( LSR) is a router inside an MPLS network. It is responsible for the exchange of the MPLS labels that are used to route the IP packets.

If an LSR receives a packet, it uses the MPLS label from the packet header to route the packet on the Label Switched Path (LSP ) and exchanged it from the label to the corresponding, which is used for the next section on the LSP.

  • Router
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