Cisco Systems RV042G, RV016 manual Glossary Term Definition

Glossary

A

Term	Definition
Fragmentation Threshold	The frame length, in bytes, that requires packets
	to be fragmented into two or more frames. Set-
	ting a lower value can reduce collisions, which
	occur more often in the transmission of long
	frames. You may need to use a lower setting in
	areas where communication is poor or where
	there is a great deal of radio interference. How-
	ever, setting the fragmentation threshold too
	low may result in poor network performance.
IKE (Internet Key	The Internet Key Exchange (IKE) protocol
Exchange)	dynamically exchanges keys between two
	IPsec hosts.
MTU (Maximum	The largest packet that can be sent over the
Transmission Unit)	network.
Network Address	Network Address Translation (NAT) is a
Translation (NAT)	technique that allows several endpoints on a
	LAN to share an Internet connection. In this
	scenario, the computers on the LAN use a
	“private” IP address range while the WAN port
	on the router is configured with a single “public”
	IP address. The router translates the internal
	private addresses into a public address, hiding
	internal IP addresses from computers on the
	Internet.
Preamble Mode	The 802.11b standard requires adding a pream-
	ble to every frame before it is transmitted
	through the air. The traditional long preamble
	requires 192 μs for transmission. A short pream-
	ble requires only 96 μs. A long preamble is
	needed for compatibility with the legacy 802.11
	systems operating at 1 and 2 Mbps.

Cisco RV220W Administration Guide 162