Avaya Configuring AppleTalk Services Bedienungsanleitung Seite 51

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AppleTalk Implementation Notes
117366-A Rev. A 2-13
When you configure zone filters on an interface using the 5.X Exclude or 5.X
Include options, the interface no longer sends out zone information about the
filtered zones:
The interface sends out ZIP Reply packets that do not contain the filtered
zones. If all the zones for a network are filtered, then the default zone of the
filtering interface represents the network. However, if the network being
queried is learned on the receiving interface of the ZIP Request packet, then
the ZIP Reply packet must contain the correct zone for that network.
The interface sends out ZIP GetZoneList Response packets that do not
contain the filtered zones.
The interface does not propagate NBP Broadcast Request packets for the
filtered zones as Forward Request packets or Lookup packets.
For example, the network administrator for the network shown in F
igure 2-6
wants to impose a security filter that restricts all AppleTalk users, except those in
the Human Resources zone, from accessing the Finance zone. To accomplish this,
the administrator adds the Finance zone to the 5.X Exclude zone filter list for
Interface 3.1.
Note: When you are using the 5.X Exclude or 5.X Include option, the
interface advertises all networks. The interface may not advertise the network
with the complete zone list because some of the zones are filtered. To avoid
different sources advertising conflicting ZIP information, the 5.X Exclude and
5.X Include options do not support loop topologies.
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