Specifications

Glossary
Glossary-vi
node. Failover is attempted only if the service is offered by two or more service
nodes (as with a VAXcluster service).
flow control
The set of rules used by a communications protocol to ensure that access server
ports and port devices do not lose data during data transfers. Flow control
prevents the sending network node (or transmitting process) from sending more
data than the receiving node (or receiving process) can handle.
gateway
See Internet gateway.
group codes
LAT. Group codes are integers ranging from 0 to 255. They are assigned to LAT
services, access servers, and access server ports.
heartbeat
A signal generated by certain Ethernet transceivers. The signal verifies that the
collision detection circuitry is operational.
host
A multiuser computer.
host-initiated request
LAT. A connection request from a computer asking a access server to initiate a
session.
The session connects an applications device such as a printer on a access server
port to an application such as a print queue on the computer.
ICMP
Internet Control Message Protocol. A protocol that is the part of the Internet
Protocol that gateways and hosts use to communicate control and error
information. If for any reason a gateway cannot forward or deliver a datagram, or
if the gateway detects unusual conditions that may affect the host, the gateway
uses this protocol to communicate with the host so that the host can take
corrective action.
ID
This is an abbreviation for identification.
image
See access server image.