Cisco Catalyst 4000 Series Switches

Field Notice: Catalyst 4000 K9 Releases 6.3(2) and Later Require ROMMON Version 5.4(1) or Later

December 11,2001

Products Affected




Cisco Catalyst 4000 K9 OS release 6.3(2)


Cisco Catalyst 4000 K9 OS release 6.3(3)


Cisco Catalyst 4000 K9 OS release 7.1(1)

Problem Description

Cisco Catalyst OS (CatOS) encrypted images for the Cisco Catalyst 4000 Series, version 6.3(2) and later will not be able to load unless the installed ROMMON image is version 5.4(1) or later.


These images require more than 4MB of random access memory (RAM) to load. ROMMON versions 5.4(1) and later free up the required additional RAM for software download.

Problem Symptoms

An attempt to upgrade a Cisco Catalyst 4000 switch to release 6.3(2) K9 will fail because of a lack of available RAM.


Upgrade ROMMON to version 5.4(1) or later using the procedure outlined in the Cisco Catalyst 4000 6.3(x) Release Notes prior to upgrading the CatOS software to version 6.3(2) or later.

You can download ROMMON version 5.4(1) or later from the Cisco Catalyst 4000 Software Download (registered customers only) page.


To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.



CSCdw10060 (registered customers only)

Upgrading to 6.3(2) crypto image requires a ROMMON upgrade to version 5.4(1).

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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