86
LANs.
BPDU:
Bridge Protocol Data Unit. BPDUs are data messages that are exchanged across the
switches between LANs that are connected by a bridge. BPDU packets
con
tain information on
ports, addresses, priorities and costs, and are exchanged across bridges to detect and
eliminate loops in a network.
ARP:
Address Resolution Protocol. Computers on a LAN use ARP to learn the hardware
addresses (i.e., MAC addresses) of other computers when they know only their IP addresses
IPV6 Multicast:
IP Multicasting under IP Protocol version 6. See IP Multicast above.
802.1.Q:
This IEEE specification defines a protocol for virtual LANs on Ethernet networks. A
virtual LAN is a group of PCs that function as a local area network, even though the PCs may
not be physically connected. They are commonly used to facilitate administration of large
networks.
5.7.8 DDNS
Dynamic DNS (DDNS)
is a service that facilitates outside Internet access to a LAN host
even when the host's dynamically-assigned IP address changes frequently.
