Appendix C: Glossary
Ethernet bridging
When an access point receives wireless traffic and the destination address is known, it forwards frames to the port with the shortest path to the destination address. When the access point has not learned the direction of the shortest path for the destination address, it forwards frames based on flooding settings to try to locate the destination address.
flooding
A frame is flooded when the destination location is unknown. The destination location of a multicast frame is never known. Unicast and multicast flooding parameters determine how a flooded frame is forwarded.
hello period
A time increment (usually 1, 2, or 3 seconds) that determines how often the access point sends out a type of multicast frame so that it can dynamically discover and test connections to other devices in the network. Once this information is learned, the access point and routers can exchange routing information.
home IP subnet
Also called the root IP subnet and primary LAN. The IP subnet that contains the root access point. If wireless end devices need to roam between IP subnets, each end device needs to have an IP address from the home IP subnet.
IAPP (Inter Access Point Protocol)
Access points use this protocol to communicate with each other. For example, when a wireless end device roams to a new access point, the new access point informs the old access points via the root access point that any traffic for the end device needs to be routed to the new access point.
This protocol also allows
Secure IAPP prevents unauthorized Allied Telesyn access products from joining the spanning tree and it encrypts IAPP frames. If you enable secure IAPP, access points will use SWAP to create secure wireless hops when communicating with each other.
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