Compatible Systems 5.4 - Manual (Page 87)

Chapter 4 - AppleTalk Routing & Bridging 81
problems. You should carefully track which AppleTalk network numbers are
in use, and where they are used.
AppleTalk 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 VPN link. An example would be “NYC - Chicago
VPN.”
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 interfaces.
> Update Method
VPN links 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 VPN link 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.