System Issues 11
Upgrade
Considerations
There are three primary upgrade considerations:
■Once you install software version 7.0.0 or hig her in a system that uses
a revision 8.0 motherboard, you can never install softwa re versions
previous to version 7.0.0 in the future. To see if you have a revision 8.0
motherboard in your system, enter system display at the to p level
of the Administration Console. The first line of the display shows the
product name and, in parentheses, the revision number of the
motherboard.
■If you are upgrading from a release prior to version 7.0.0 , be aware
that the menu item ip forw arding was changed to ip routing
at version 7.0.0. If you have created automated scripts that include
ip forwarding, edit them to reflect this command change.
■If you are upgrading from a release prior to version 8.1.1 ,
be awarethat the parameter broadcast address in the IP
interface definition procedure was changed to
advertisement address(es) at version 8.1.1. If you have
created automated scripts that include broadcast address, edit
them to reflect this command change.
Restrictions with
ATMand 10BASE-FL
Modules
Each CoreBuilder 2500 chassis features two slots for low-speed modules
(Ethernet) and two slots for high-spee d modules (ATM, FDDI, or Fast
Ethernet). At this release, however, the system supports only one ATM
module per chassis.
In addition, restrictions apply to certain configu rations that mix one ATM
module with two older Ethernet 10BASE-F L modules (3C201400; no
longer orderable). The combination of these t hree modules causes certain
systems to draw excessive power and eventually fail. Whether your
system could be affected by this module-combina tion problem depends
on the revision level of the system motherboard.
You can order a newer version of the 10BASE-FL module ( 3C201400A).
The configuration restrictions described in this section do not apply to this
newer version of the 10BASE-FL modul e.
To determine the revision level of your system motherboard, enter
system display at the top level of the Administration Console. The
first line of the display shows the product name and, in p arentheses, the
revision number of the motherboard.