Allied Telesis AT-WA7500, AT-WA7501 Appendix C, ARP Address Resolution Protocol cache, Broadcast

Appendix C

Glossary

ARP (Address Resolution Protocol) cache

A table that stores IP addresses and their corresponding MAC addresses.

The access point maintains an ARP cache and can act as an ARP server.

BFSK (Binary Frequency Shift Key)

A broadcasting method that lengthens the range but halves the throughput as compared to the QFSK method. In access points using an OpenAir radio, the radio can be configured so that it automatically switches to this method when the RF protocol determines that throughput is degrading due to range. The transmit mode parameter determines if BFSK will be used. The default setting for transmit mode is AUTO, which allows this automatic switching to occur.

broadcast

A type of transmission in which a message sent from the host is received by many devices on the system.

data link tunneling

An access point feature that encapsulates the data into an OWL data frame. This frame is then forwarded via the Ethernet port to the next access point on the path and so on until the frame reaches the root access point or designated bridge. The root access point or designated bridge unencapsulates the frame and forwards it to the host. When the root access point or designated bridge receives data on the Ethernet network for an end device, it reverses this process.

You should only use data link tunneling if you have Ethernet switches that do not support the IEEE 802.1d requirements for backward learning or if you are using IP tunnels to provide mobility of other routable protocols.

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