
Chapter 3 Connecting to the XSCF and the Server 3-15
XSCF Connection via a Serial Port
Establish an XSCF connection via a serial port. Connect the serial port as shown in
FIGURE 3-1. An XSCF connection via the serial port has the following functions and
advantages:
■ XSCF Shell
■ Advantageous when connection to the LAN is not desirable for reasons of security
■ Displaying the initial diagnostic message at the XSCF connection
XSCF Connection via XSCF-LAN and Serial Ports
Establish the XSCF connection via XSCF-LAN and serial ports. This type of connection is
also shown in
FIGURE 3-1. The XSCF connection via both ports has the following advantage
in addition to those for the connection via the XSCF-LAN port.
■ A user who connected with the serial port can safely use the XSCF Shell.
3.2.2 XSCF-LAN and Serial Connection Purposes
The XSCF Unit has one serial port and two XSCF-LAN ports with 10/100 Mbps interfaces.
This section describes examples of using the XSCF-LAN ports and the serial port.
Caution – IMPORTANT - The IP address of XSCF-LAN#0 and IP address of
XSCF-LAN#1 must be specified in different subnet addresses.
Using Two LAN Ports and Making the LAN Redundant
FIGURE 3-6 shows an example of a configuration where the two XSCF-LAN ports of one
XSCF Unit are used for the same purpose. This configuration makes the XSCF-LAN
redundant. The purpose is as follows:
■ The two LANs, which are redundantly configured, are used for the system administrator
■ The two LANs, which are redundantly configured, are used for the remote maintenance
service.
■ FE uses either of the two LANs or a maintenance terminal that is serially and directly
connected.
In the example of the configuration shown in
FIGURE 3-6, if errors occur in either of the two
LAN ports and its switch hub, its LAN is replaced by the other LAN. Moreover, if an error
occurs in the switch hub, the other LAN can be relied on for notification.
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