| 释义 |
label 1. A set of data attached to and providing identification or other information relative to a larger data unit, such as a packet or message. See also packet and message. 2. In Multiprotocol Label Switching (MPLS), the set of data attached to a packet and used by a Label Switched Router (LSR) to select a link across which to forward that packet. The initial packet is inserted by a Label Edge Router (LER). Each LER along the path swaps the label associated with the incoming packet for a new label associated with the outgoing packet to be used by the adjacent downstream router in making the next link selection. See also downstream, LER, link, LSR, MPLS, packet, and router. |