Allied Telesis AT-S25 - Manual (Page 132)

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Upgrading the Stack Software
Allied Telesyn periodically updates and revises the AT-S25 software for
your AT-8300 Series switches. The latest version of the software is posted
on the Allied Telesyn web site for you to download onto your switches
and stacks.
The file for you to download is a self-extracting compressed file. It
contains several additional files. One the files is the actual software
image file. It has an .IMG extension. This is the software image file that is
to be used in the following upgrade directions.
You can use either by XModem or Trivial File Transfer Protocol (TFTP) to
upgrade the software on a stack. Upgrading the software in a stack is
accomplished by downloading the new software onto the master
switch, which then automatically downloads the new software to the
slave switches as a normal part of its network operations.
Upgrading the software in multiple AT-8300 stacks is simplified using
the Omega interface. Rather than having to upgrade each stack
manually, you need only upgrade one stack in your network and then
use commands in the Omega interface to download the new software to
the other stacks automatically. The Omega commands used for this are
Update Software in Another Switch and Broadcast Updated Software to All
Systems.
Upgrading the software in a stack involves using the Download
Password. This password is required when upgrading the software
except when using the XMODEM software upgrade feature. The default
download password is ATS25. The password is case sensitive. Changing
this default password to an unique password will prevent unauthorized
personnel from changing the software on the switch. See
Configuring
IP Parameters on page 38 for instructions on how to change the
download password.