Cisco Model D9479 Gigabit QAM Modulator Installation Guide
Change the Boot Mode
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Change the Boot Mode
This section describes the available boot modes available and contains instructions
for changing the boot mode from the craft port using a diagnostic PC.
Boot Modes
Three boot modes (0 through 2) exist and are described in the following list:
0 - Skip BootP (Standalone mode) – This mode bypasses the boot mode when
you power on the GQAM. Use the Skip BootP mode when operating in
Standalone mode, when provisioning and monitoring the GQAM from the front
panel or the craft port, or when operating without the control of the DNCS. This
mode skips the BOOTP and TFTP processes and jumps directly to the application
code.
1 - Attempt BootP One Time (Attempt Bootp Once mode) – This mode is not
normally used in network operation. If used when the GQAM is connected to the
network and the network connection is lost or reset, the GQAM must be
rebooted. This mode attempts each BOOTP and TFTP step only once. If a failure
occurs during any step, the step is skipped; the GQAM attempts the remaining
steps and eventually attempts to start the application. If the BOOTP and/or
configuration file TFTP steps are aborted due to errors, the GQAM may not
communicate with the DNCS.
2 - Bootp Until Successful (Boot Until Successful mode) – This is the default
mode. This mode continues to boot until the GQAM receives an IP address and
all download images. This setting is useful when upgrading the software.
Booting until successful ensures that the GQAM completes all startup
procedures successfully. Use the standard mode (boot forever until successful)
when a network controller such as the DNCS monitors and provisions the
GQAM through the Ethernet port. This mode attempts to boot and to TFTP the
configuration file and any requested boot and/or application code files until the
entire process is successful. If an error occurs at any step, the GQAM restarts
until a successful boot occurs.
Important: Do not select this setting when operating the GQAM outside a DNCS
Important: Do not select this setting when operating the GQAM outside a DNCS
environment.
Changing the Boot Mode
1 Connect a diagnostic PC to the CRAFT PORT on the back panel of the GQAM.
2 Power on the diagnostic PC and activate a Procomm or Hyperterminal window
2 Power on the diagnostic PC and activate a Procomm or Hyperterminal window
using the following modem connection settings:
9600 baud
1 stop bit