User`s guide

Table Of Contents
Upgrading system software
The upgrade procedure
E-6 Preliminary January 30, 1998 Pipeline User’s Guide
You must use TFTP to upload a fat or extended load.
Note:
To use Trivial File Transfer Protocol (TFTP) you need a TFTP server
on your computer (host) or accessible over the Ethernet. You can obtain a
TFTP server from software download sites on the Internet.
If you are upgrading your software using TFTP, you must use the
fsave
command immediately after executing the
tload
command. Failure to do
so may cause your Ascend unit to lose its configuration.
Before you can upgrade to a fat or extended load, you must first upgrade to a
version of software that understands the new format, then upgrade to the fat
or extended load. You can upgrade directly to a thin load (which is fat-load
aware) or an extended-aware load from any version of software.
Before you begin
!
Caution:
Uploading system software overwrites all existing profiles. Save your
current Pipeline configuration before you begin. After upgrading the system
software, restore the configuration. Since the saved configuration is readable text,
you can manually reenter the settings, if necessary. For more information, see
how to save a configuration in your Pipeline documentation.
Before upgrading your system software:
1
Obtain the appropriate load file, either by downloading it from the FTP
server or by contacting Ascend technical support.
!
Caution:
Be sure your unit can handle the binary; for example, an older
Pipeline (with a switch on the back) cannot use a binary for a version 2
Pipeline (such as b2.p75). If you “upgrade” to a version of software not
supported by your unit, the unit will no longer function and you will need to
returned it to Ascend for repair.
2
Save the current configuration.
Note:
For security reasons, passwords are not included in the saved
configuration text file. When you restore the configuration, the default
(factory-set) passwords are reinstated. See the section on Security profiles in
your documentation for more information.