Setting
up a Connection to a Remote UNIX Host
This section describes how to set up a connection to a remote UNIX
host using the SLIP and PPP protocols.
You should run SLIP and PPP on the highest numbered ports. Because
of hardware priorities internal to the communications server, data may
be lost on ports numbered higher than SLIP or PPP ports.
Configuring
a Dedicated SLIP Port for a Remote UNIX Host
Serial Line Interface Protocol (SLIP) allows hosts to communicate Internet
packets over one serial line instead of Ethernet. Two hosts can communicate
over one serial line-one host on each end.
This section explains how to configure a dedicated SLIP port on the
Communications Server. When configuring a SLIP port, the port you are
configuring must not be in use. You can't be logged in to the port you
want to configure, and it can't be in use by any other user or service.
Using Web Configuration.
Invoke the Server's setup utility by entering its IP address in a network-connected
web-browser, (i.e. http://123.456.789.001). When the Setup front
page is displayed:
Step 1.
Press the 'Setup' button. Specify a valid user name and password,
if prompted.
Step 2.
Select the 'Direct Connection' hyperlink from the main Setup
screen.
Step 3.
Select 'SLIP' from Setup Direct Connections screen.
Step 4.
Specify the following:
- Ports to which the device(s) are to be connected- Port
01 to 08.
- Client IP address - specify the client IP address.
- Server IP address - specify the server IP address.
- Netmask - for example 255.255.255.0
- Compression - enabled or disabled (disabled is default).
- Baud Rate - from 5 to 230,400 or autobaud (default - 115200).
- Character size - 8 or 7 (default - 8).
- Parity - none, even, odd, mark or space (default - none)
- Stop bits - 1 or 2 (default - 1)
- Flow Control - none, hardware or software (default - hardware)
Using Command Line Configuration.
To configure a dedicated SLIP port:
Step 1.
Activate SLIP on the remote UNIX host. For instructions about how
to activate SLIP on your UNIX host, refer to your operating system
documentation.
Step 2.
Activate SLIP on the communications server. In privileged mode on
the server, type:
Local 1>> CHANGE PORT
port_number DEDICATED SLIP
Local 1>> CHANGE PORT
port_number SLIP HOST ADDRESS host_IP_addr
Local 1>> CHANGE PORT
port_number SLIP LOCAL ADDRESS local_IP_addr
Local 1>> LOGOUT PORT
port_number
Local 1>> CONNECT PORT
port_number
Where
- port_number is the number of the port to which the remote
UNIX host is attached.
- host_IP_addr is the Internet address of the remote UNIX
host.
- local_IP_addr is the Internet address of the port on the
communications server.
In the following example, the Internet addresses are 89.0.0.1 for
the port on the communications server and 89.0.0.2 for the remote
UNIX host, and the port number is 7. This example assumes the UNIX
host is configured properly and SLIP has been activated on the UNIX
host.
Local 1>> CHANGE PORT
7 DEDICATED SLIP
Local 1>> CHANGE PORT
7 SLIP HOST ADDRESS 89.0.0.2
Local 1>> CHANGE PORT
7 SLIP LOCAL ADDRESS 89.0.0.1
Local 1>> LOGOUT PORT
7
Local 1>> CONNECT PORT
7
Note:
If the error message 'Port is already active' appears after the CONNECT
PORT command, it is probably caused by incoming data from the remote
UNIX host. Ignore the error message and verify the connection with
the SHOW PORT SLIP command. 'Connected' should appear in the status
field.
Configuring
a Dedicated PPP Port for a Remote UNIX Host
Point-to-Point Protocol (PPP) is used for communicating Internet packets
over a serial line. PPP differs from SLIP mainly in that it can negotiate
certain configuration settings when a connection is made with a remote
host. These settings include packet compression, Internet addresses,
and the character map.
This section explains how to configure a dedicated PPP port on the
Communications Server. When configuring a PPP port, the port you are
configuring must not be in use. You can't be logged in to the port you
want to configure, and it can't be in use by any other user or service.
Using Web Configuration.
Invoke the Server's setup utility by entering its IP address in a network-connected
web-browser, (i.e. http://123.456.789.001).
When the Setup front page is displayed:
Step 1.
Press the 'Setup' button. Specify a valid user name and password,
if prompted.
Step 2.
Select the 'Direct Connection' hyperlink from the main Setup
screen.
Step 3. Select 'PPP' from Setup Direct Connections
screen.
Step 4.
Specify the following:
- Ports to which the device(s) are to be connected- Port
01 to 08.
- Client IP address - specify the client IP address.
- Server IP address - specify the server IP address.
- Netmask - for example 255.255.255.0
- Compression - enabled or disabled (disabled is default).
- CHAP - enabled or disabled (disabled is default).
- PAP Configuration - no PAP authentication, any valid user
or specified port user only (no authentication is default).
- Baud Rate - from 5 to 230,400 or autobaud (default 115200).
- Character size - 8 or 7 (default 8).
- Parity - none, even, odd, mark or space (default none)
- Stop bits - 1 or 2 (default 1)
- Flow Control - none, hardware or software (default hardware)
Step 5.
Press the Configure button when ready. The input parameters are implemented
immediately. The setup program now confirms that the input has been
accepted by displaying the Configuration Results screen.
Using Command Line Configuration.
To configure a dedicated PPP port, perform the following:
Step 1.
Activate PPP on the remote UNIX host. For instructions about how to
activate PPP on your UNIX host, refer to your operating system documentation.
Step 2.
Activate PPP on the communications server. In privileged mode on the
server, type:
Local 1>> CHANGE PORT
port_number DEDICATED PPP
Local 1>> CHANGE PORT
port_number PPP HOST ADDRESS host_IP_addr
Local 1>> CHANGE PORT
port_number PPP LOCAL ADDRESS local_IP_addr
Local 1>> LOGOUT PORT
port_number
Local 1>> CONNECT PORT
port_number
Where
- port_number is the number of the port to which the remote
UNIX host is attached.
- host_IP_addr is the Internet address of the remote UNIX
host.
- local_IP_addr is the Internet address of the port on the
communications server.
In this following example, the Internet addresses are 89.0.0.1 for
the port on the communications server and 89.0.0.2 for the remote
UNIX host, and the port number is 7. This example assumes the UNIX
host is configured properly and PPP has been activated on the UNIX
host.
Local 1>> CHANGE PORT
7 DEDICATED PPP
Local 1>> CHANGE PORT
7 PPP HOST ADDRESS 89.0.0.2
Local 1>> CHANGE PORT
7 PPP LOCAL ADDRESS 89.0.0.1
Local 1>> LOGOUT PORT
7
Local 1>> CONNECT PORT
7
If the error message 'Port is already active' appears after the CONNECT
PORT command, it is probably caused by incoming data from the remote
UNIX host. Ignore the error message and verify the connection with
the SHOW PORT PPP command. 'Connected' should appear in the status
field.
