Installation guide

Release Notes for Catalyst5000 Family Software Release4.x

OL-2306-01

Release 4.x Memory Requirements

• Usage Guidelines, Restrictions, and Troubleshooting , page75

• Documentation Updates for Software Release4.5, page83

• Documentation Updates for Software Release4.3, page83

• Documentation Updates for Software Release4.2, page84

• Documentation Updates for Software Release4.1, page84

• Additional Documentation, page85

• Obtaining Documentation, page86

• Obtaining Technical Assistance, page87

Release 4.x Memory Requirements

These memory restrictions apply when running supervisor engine software release 4.x:

• If you are using the new 20-MB Flash PC card (Cisco product number MEM-S3-FLC20MA) for the

Supervisor Engine III, you must use software release 4.5(4) or later. The old 20-MB Flash PC card

(MEM-S3-FLC20M) is supported in all 4.x releases.

• All of the Catalyst 5000 family supervisor engine 4.x software releases require a minimum of

16-MB RAM installed on your supervisor engine. All Catalyst5000 family supervisor engines with

at least 16-MB DRAM fully support software release4.x.

Note Future releases of the supervisor engine software will require 32-MB DRAM on the supervisor

engine.

Release 4.x Software Upgrade Path

Caution Always back up the switch configuration file before upgrading or downgrading the switch software

to avoid losing all or part of the configuration stored in nonvolatile RAM (NVRAM). Use the write

network command (Supervisor Engine I or II) or the copy config tftp command (Supervisor Engine

III) to back up your configuration to a Trivial File Transfer Protocol (TFTP) server. Use the copy

config flash command on a Supervisor Engine III to back up the configuration to a Flash device.

Caution Upgrading from software release version 4.5(1), 4.5(2), and 4.5(3) to 4.5(4) causes Token Ring

module configurations to be lost. The workaround is to upload the configuration to a TFTP server

before upgrading and reload the configuration after the upgrade is complete. Note that this problem

only affects the configuration for the actual Token Ring module itself and not general configurations

such as Token Ring VLANs.

Catalyst5000 family supervisor engine software image files are available in the Software Center on

Cisco.com, Cisco’s WWW site (software downloads are available to registered Cisco.com u sers only):

http://www.cisco.com/kobayashi/sw-center/switching/cat2900-5000-planner.shtml