label switching
<networking> An attempt to combine the best attributes of layer two
switching (as in ATM and Frame Relay) with the best attributes of the layer
three routing (as in IP).
The key concept in label switching is identifying and marking IP datagrams with
labels and forwarding them to a modified switch or router, which then uses the
labels to switch the datagrams through the network. The labels are created and
assigned to IP datagrams based upon the information gathered from existing IP
routing protocols.
Prior to the formation of the MPLS Working Group in 1997, a number of vendors
had announced and/or implemented proprietary label switching.
(1999-06-14)
Nearby terms:
la « label edge router « label switched path «
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