Glossary

star topology. The IEEE 802.3 standard evolved from Ethernet, but they are not exactly the same. Network devices based on both standards can co-exist on the same medium, but they cannot exchange data directly without special “bilingual” software that can decode packets of both types. The drivers for the HP3000 network cards fit this requirement if configured correctly.

Ethernet address See station address.

H

HP-PBHP Precision Bus. Refers to the hardware I/O architecture. The precision bus is the bus thru which these cards communicate with the CPU and memory.

I

IEEE 802.3 standard Part of the institute of Electrical and Electronics Engineers 802 family of LAN standards. The 802.3 standard defines the physical layer (layer 1) and the Medium Access Control (MAC) portion of the data link layer (layer 2). The IEEE 802.3 standard evolved from

Ethernet, but the two networks are not fully compatible with each other.

IEEE 802.5 standard Part of the institute of Electrical and Electronics Engineers 802 family of LAN standards. The 802.5 standard defines the physical layer (layer 1) and the Medium Access Control (MAC) portion of the data link layer (layer 2). Used with Token Ring networks.

IEEE 802.12 standard Part of the institute of Electrical and Electronics Engineers 802 family of LAN standards. The 802.12 standard defines the physical layer (layer 1) and the Medium Access Control (MAC) portion of the data link layer (layer 2).

L

LAN See local area network.

LAN cable The medium through which data moves in a LAN, LAN cables come in many types. For example, thick (10 mm) coaxial cable, thin (5 mm) coaxial cable, fiber-optic cable, and shielded or unshielded twisted-pair cable. The 100VG-AnyLAN cables are typically UTP CAT-3 or CAT-5.

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Glossary