User`s guide

Glossary
D-23
groups must consist of ports with all the same underlying link
type.
WAN (wide area network)
A communication network that spans a large geographic area.
ZIP (Zone Information Protocol)
In the AppleTalk routing protocol, ZIP is used to disseminate zone
information from routers to end nodes and between routers. End
nodes ask for their zone on start-up and a global list of available
zones each time someone opens the Chooser. Routers bind a zone
list to a network number when a network number is learned via
RTMP. This is done by querying the router from which the route
was learned.
Note that there is no way to change the network.zone list binding
after a binding is performed. The only way to add or delete a zone
from a network is to isolate the network from the internet and then
have the internet relearn the route. Since RTMP does not have a
triggered update, ensuring a network has been deleted can take
quite a while; up to ten minutes according to the specification.