Nortel 5399 Hardware Installation Manual page 75

Chapter 3 ROM Monitor Commands
The Remote Access Concentrator boots from the defined preferred load
host. If the preferred load host is not defined or does not respond, the
Remote Access Concentrator optionally broadcasts on the Ethernet and
loads from the first host that responds, if the Load Broadcast flag is set.
To initiate loading, the Remote Access Concentrator sends a load request
message to the selected host. After receiving a response, the Remote
Access Concentrator loads its operational code to RAM. When loading
is complete, it transfers control to the newly-loaded program. The Remote
Access Concentrator displays a symbol on the service port terminal for
each data block received during the boot.
When the Remote Access Concentrator begins to boot, it displays the
load server host's Internet address. If the unit does not boot successfully
after several attempts, it displays a boot attempt failed message; if the
unit has opened the boot file and an error occurs during the boot process,
it displays a boot error report on the service port terminal and returns to
the ROM Monitor. The boot error report can help determine the cause of
the boot failure (see "Boot Error Report" on page 4-8).
During a boot, the service port terminal may display four possible status
symbols: "." indicates received data blocks, "?" indicates unanswered
requests, "*" indicates transmission errors, and "! ~XXXX~" is a status
word from the Ethernet chip on the Annex indicating a serious problem
with the Ethernet connection (if this symbol appears in your boot
command display, contact technical support).
Nortel Networks 5399 Access Switch Hardware Installation Guide
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