Bay Networks 5390, Administering, Page: 108 / 888

A4-2 893-741-B
The Port Server and Rotaries
Telnet and Rlogin
As a port server, the Model 5390 server accepts telnet and rlogin connection requests from users
and applications on the network. Once connected to the Model 5390 server, a user or application
can connect to a device attached to a port that is in slave or adaptive mode. The following example
shows how a user connects to the Model 5390 server using telnet:
% telnet 5390_01
Trying...
Connected to 5390_01.
Escape character is "^]".
Rotaries Defined:
cli
Enter Annex port name or number: 2
Attached to port 2.
In Figure A4-1, 5390_01 provides modems for outgoing and incoming calls; it also provides the
console port for remote system management on HostE; 5390_02 and 5390_03 provide laser printers
to which printing applications can be sent; and 5390_04 provides access to a host without a network
interface.
The Port Server
After connecting to the Model 5390 server by telnet or rlogin, the port server provides users with
the option of selecting a single port or a rotary connection. telnet users can also select a virtual CLI
connection. Applications connecting to the Model 5390 server access only a single port.
A rotary is a set of Model 5390 ports grouped together so that they can be addressed by users, and
managed by the Model 5390 server, as a single entity. When a user requests a rotary, the port server
attaches the user to the first available port. You can configure the Model 5390 server to keep track
of the last port to which it connected and start its port selection from that point.