3Com WX2200 3CRWX220095A, WXR100 3CRWXR10095A, WX4400 3CRWX440095A Msdu, Mss, Mtu, Nat, Ofdm, Pat

GLOSSARY 691

MSDU	MAC service data unit. In IEEE 802.11 communications, the data
	payload encapsulated within a MAC protocol data unit (MPDU).
MSS	See Mobility System Software™ (MSS™).
MTU	Maximum transmission unit. The size of the largest packet that can be
	transmitted over a particular medium. Packets exceeding the MTU value
	in size are fragmented or segmented, and then reassembled at the
	receiving end. If fragmentation is not supported or possible, a packet
	that exceeds the MTU value is dropped.
NAT	Network address translation. The capability, defined in RFC 3022, of
	using one set of reusable IP addresses for internal traffic on a LAN, and
	a second set of globally unique IP addresses for external traffic.
network address	See NAT.
translation
network plan	A design for network deployment and settings for network
	configuration, stored in the 3Com Wireless Switch Manager (3WXM)
	tool suite.
nonvolatile storage	A way of storing images and configurations so that they are
	maintained in a unit’s memory whether power to the unit is on or off.
Odyssey	An 802.1X security and access control application for wireless LANs
	(WLANs), developed by Funk Software, Inc.
OFDM	Orthogonal frequency division multiplexing. A modulation technique
	that sends data across a number of narrow subcarriers within a
	specified frequency band. The wireless networking standards IEEE
	802.11a and IEEE 802.11g are based on OFDM.
orthogonal	See OFDM.
frequency division
multiplexing
pairwise master key	See PMK.
pairwise transient	See PTK.
key
PAT	Port address translation. A type of network address translation (NAT) in
	which each computer on a LAN is assigned the same IP address, but a
	different port number. See also NAT.