Specifications

12-7
Configuring and Managing Interactive Devices
• PPP — The access server defaults to the PPP protocol if the user does not
specify a protocol with the CONNECT command.
• AUTOLINK — The access server passively examines characters received from
the attached device. If the access server detects a PPP or SLIP connection, it
attempts to change the current session into the appropriate data link session
type, PPP or SLIP. If the access server cannot identify the data as PPP or SLIP,
it starts and interactive session.
An adjunct to the AUTOLINK protocol is AUTOLINK authentication. See
Managing Dial-Up Access Security with AUTOLINK and AUTOLINK
Authentication in Chapter 21 for details.
Specifying Failover
If a LAT service node suddenly becomes unavailable during a session, the access
server searches for another LAT service node that offers the same service. If the
access server finds one or more suitable nodes, it attempts to connect to the
service on the node with the highest service rating. This process is called failover.
When used with a VAXcluster computer network, failover provides a flexible
terminal connection to the VAXcluster service.
This feature can be disabled on each port.
Example: Disabling Port Failover
The following example shows how to disable failover on port 2:
Local> CHANGE PORT 2 FAILOVER DISABLED
Configuring Port Queuing
When a user on the access server tries to connect to a busy service on an access
server, the Port Queuing characteristic allows the connect request to be queued.
The service must be on an access server, either the same one as the user’s or a
different one.
The queuing of the connect request also depends on whether the access server
offering the service has reached its queue limit or has queuing disabled. In this
case, the connection is not queued and the user receives a message that indicates
that service is not available.