U
- unformatted page (UP)
-
A message that is part of an Auto-Negotiation exchange. Its content depends on the message code in a prior message page.
- unicast address
-
An address that identifies a single network interface card.
- universally administered MAC address
-
An address assigned to a network interface card by a manufacturer that has obtained a block of unique identifiers from the IEEE.
- unshielded twisted-pair cable (UTP)
-
A cable in which wires are paired and twisted around each other. Usually four pairs are bundled into a single cable. The cables are graded by categories ranging from 1 to 7.
- Unspecified Bit Rate (UBR)
-
A best-effort ATM service.
- upstream neighbor
-
For Token Ring or FDDI, the adjacent neighboring ...
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