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TOPIC
Since installing Open Transport, we have users getting intermittent messages indicating that access to their AppleTalk network has become unavailable. Subsequently they get a similar message indicating that access to their AppleTalk network has become available. What generates these messages?
DISCUSSION
These are messages are generated when a Macintosh computer is unable to communicate with its router. This usually indicates a routing device on the network which is not configured properly, or marginal network wiring. In either case, network administrators will need to investigate and resolve the root cause.
As an interim measure to reduce occurrences of these alert messages, the AppleTalk Options control panel can be installed. This control panel has the option to suppress router related alerts. It is intended for use by ISDN users who have connections which go up and down as needed by network traffic.
CAUTION: The AppleTalk Options control panel should not be used as a long term solution for Macintosh computers receiving router alerts on routed networks.
The AppleTalk Options control panel can be found in the Open Transport Extras folder with Open Transport 1.1.1 and later.
There is also an issue with Apple Remote Access 3.0 which can cause the message. For information on this related topic, please see the following Tech Info Library article:
Article 24549: " ARA 3.0: "AppleTalk Network Not Available" Message "