Digital Equipment DEC WANrouter 90, Руководство пользователя, Страница: 55 / 121

3–12 DEC WANrouter 90 Owner’s Manual
3.4.1.3 Self-Test Successful But Network LED Not Lit
If the Network LED is not lit or blinks (indicating that the DEC WANrouter 90 soft-
ware has not been down-line loaded to the router), check with the system manager
to:
•
Determine if the DEC WANrouter 90 software has been installed on the load
host.
•
Determine whether the software will be down-line loaded over the Ethernet
or over the serial line.
If the router software is not installed on the load host, notify the system manager that
the software needs to be installed in order to complete the router installation.
If the system manager informs you that the router software has already been installed
on the load host, and must be down-line loaded over the serial line, perform the fol-
lowing steps:
1. Remove the H3199 loopback connector from the 50-pin port connector.
2. Connect a device to the serial port, as described in Section 3.5.
3. Connect a terminal to router’s console port connector, as described in
Section 3.6.
4. Configure the serial port for down-line loading, as described in Appendix C.
5. After completing these steps, examine the state of the Network LED. At this
point, the Network LED should remain lit. If it is not lit, nofity the system
manager.
3.5 Connecting a Device to the 50
-
Pin Device Port
To connect a device to the router’s serial port, you need an adapter cable (and, if nec-
essary, an extension cable). Appendix A provides detailed information about which
adapter cable and extension cable to use, depending on the type of device you are
connecting.