User`s guide

Upgrading system software
The upgrade procedure
Pipeline User’s Guide Preliminary January 30, 1998 E-7
3
If necessary, activate a Security profile that allows for field upgrade.
If you are not sure how, see the section on Security profiles in your
documentation.
4
If you are using TFTP, be sure you have loaded the correct binaries into the /
tftpboot directory on the TFTP server.
Upgrading system software with a standard load
You can upgrade system software with a standard load using either the serial
console or by using TFTP over the Ethernet.
Upgrading using the serial console
1
From the VT100 interface, access the diagnostics monitor by typing these
characters in rapid succession:
Press Ctrl-D to invoke the DO menu and select D=Diagnostics.
2
Enter
fsave
to save your current configuration to flash memory.
3
Enter
quit
to exit the Diagnostic interface.
4
Type the following four-key sequence in rapid succession (press each key in
the sequence shown, one after the other, as quickly as possible):
Esc [ Esc -
(Press the escape key, the left bracket key, the escape key, and the minus key,
in that order, in rapid succession.) The following string of Xmodem control
characters appear:
CKCKCKCK
If you do not see these characters, you probably did not press the four-key
sequence quickly enough. Try again—most people use both hands and keep
one finger on the escape key.
5
Use the Xmodem file transfer protocol to send the system file to the Pipeline.
6
Your communications program begins sending the file to your Ascend unit.
This normally takes anywhere from 5 to 15 minutes. The time displayed on
the screen does not represent real time. Do not worry if your communication
program displays several “bad batch” messages. This is normal.
7
When the upgrade process completes, the Pipeline resets. When the self-test
completes, the unit’s initial menu appears in the Edit window with all
parameters set to default values.