Compatible Systems 5.4 Manuale Utente

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Chapter 4 - AppleTalk Routing & Bridging
Zone
If you have set this interface to be a numbered interface, you must provide a 
zone name which will be associated with the network number entered above. 
Zone names may be up to 32 characters in length.
Typically a name is chosen which has some significance to the physical loca-
tions connected by the WAN link. An example would be “NYC - Chicago 
WAN.”
This name will appear in the Chooser program of computers which support 
AppleTalk, but there will be no selectable AppleTalk devices in the zone.
Node
If you have set this interface to be a numbered interface, you must provide an 
AppleTalk node number in this field which is unique for the network number 
you entered above.
v Note:  Compatible Systems routers require the assignment of a unique 
AppleTalk node number for numbered WAN interfaces. On Frame Relay 
networks in particular, you should keep a list of node number assignments to 
avoid conflicts.
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Update Method
WAN interfaces which are configured to provide “dial-on-demand” service 
will bring a connection up (i.e. dial the other end) when there are network 
packets which must be transferred over the link. Once a dial-on-demand 
connection is up, network traffic passing across the link causes the inactivity 
timer for the link to be reset, keeping the connection up.
The AppleTalk RTMP protocol periodically sends out update information 
across a link. These periodic update packets will cause a WAN interface set 
for dial-on-demand operation to either stay up indefinitely or to continuously 
dial, connect, and then drop the connection.
If Triggered is selected with this pull-down menu, the router will modify 
the standard AppleTalk RTMP behavior for this interface to send Apple-
Talk RTMP packets only when there has been an update to its routing 
table information, or when it has detected a change in the accessibility of 
the next hop router.
If Periodic is selected with this pull-down menu, the router will use the 
standard AppleTalk RTMP protocol, which sends RTMP packets over 
the link every 10 seconds.
Optional Remote End-Node Network Number
Besides defining a method for router-to-router communication, the PPP 
protocol defines a method for individual client machines to dial in to a router