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Label Switching Router

<networking> (LSR) A device that typically resides somewhere in the middle of a network and is capable of forwarding datagrams based upon a label.

In many cases, especially early versions of MPLS networks, a LSR will typically be a modified ATM switch that forwards datagrams based upon a label in the VPI/{VCI} field.

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L6 la label edge router label switched path label switching	LSR	Lab for Computer Science Laboratory INstrument Computer Laboratory Virtual Instrument Engineering Workbenc LaborNet Labtech Notebook