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Cisco Catalyst 3550 Series Switches

Release Notes for the Catalyst 3550, 2955, 2950, 2950 LRE, and 2940 Switches, Cisco IOS Release 12.1(20)EA1a

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Release Notes for the Catalyst 3550, 2955, 2950, 2950 LRE, and 2940 Switches, Cisco IOS Release 12.1(20)EA1a

Table Of Contents

Release Notes for the Catalyst 3550, 2955, 2950, 2950 LRE, and 2940 Switches, Cisco IOS Release 12.1(20)EA1a

Contents

Resolved Caveats for All Applicable Switches

Which Software Files to Download from Cisco.com

Related Documentation

Obtaining Documentation

Cisco.com

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco Technical Support Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information


Release Notes for the Catalyst 3550, 2955, 2950, 2950 LRE, and 2940 Switches, Cisco IOS Release 12.1(20)EA1a


April 2004

These release notes describe a resolved caveat for Cisco IOS Release 12.1(20)EA1a. This release runs on the Catalyst 3550, 2955, 2950, 2950 LRE, and 2940 switches.


Note Use these release notes with the information in the previous release notes for these specific switch platforms. See the "Related Documentation" section for links to the switch documentation on Cisco.com.


Contents

This document has the following sections:

Resolved Caveats for All Applicable Switches

Which Software Files to Download from Cisco.com

Related Documentation

Obtaining Documentation

Documentation Feedback

Obtaining Technical Assistance

Obtaining Additional Publications and Information

Resolved Caveats for All Applicable Switches

These resolved caveats are applicable to the Catalyst 3550, 2955, 2950, 2950 LRE, and 2940 switches:

CSCed68575

Cisco Internetwork Operating System (IOS) Software releases trains 12.0S, 12.1E, 12.2, 12.2S, 12.3, 12.3B and 12.3T may contain a vulnerability in processing SNMP requests which, if exploited, could cause the device to reload.

The vulnerability is only present in certain IOS releases on Cisco routers and switches. This behavior was introduced via a code change and is resolved with CSCed68575.

This vulnerability can be remotely triggered. A successful exploitation of this vulnerability may cause a reload of the device and could be exploited repeatedly to produce a Denial of Service (DoS).

This advisory is available at http://www.cisco.com/warp/public/707/cisco-sa-20040420-snmp.shtml

Which Software Files to Download from Cisco.com

New software releases are posted on Cisco.com and are also available through authorized resellers. These tables list the software filenames for software releases described in this document:

Table 1 (Catalyst 3550 switches)

Table 2 (Catalyst 2955 switches)

Table 3 (Catalyst 2950 switches)

Table 4 (Catalyst 2950 LRE switches)

Table 5 (Catalyst 2940 switches)

 

Table 1 Cisco IOS Software Image Files for Catalyst 3550 Switches 

Filename
Description

c3550-i5k2l2q3-tar.121-20.EA1a.tar

Catalyst 3550 EMI cryptographic Cisco IOS image and CMS files

c3550-i5q3l2-tar.121-20.EA1a.tar

Catalyst3550 EMI Cisco IOS image and CMS files

c3550-i9k2l2q3-tar.121-20.EA1a.tar

Catalyst 3550 SMI cryptographic Cisco IOS image and CMS files

c3550-i9q3l2-tar.121-20.EA1a.tar

Catalyst 3550 SMI Cisco IOS image and CMS files


 

Table 2 Cisco IOS Software Image Files for Catalyst 2955 Switches 

Filename
Description

c2955-i6k2l2q4-tar.121-20.EA1a.tar

Catalyst 2955 EI cryptographic Cisco IOS image and CMS files

c2955-i6q4l2-tar.121-20.EA1a.tar

Catalyst 2955 EI Cisco IOS image and CMS files


Table 3 Cisco IOS Software Image Files for Catalyst 2950 Switches 

Filename
Description

c2950-i6k2l2q4-tar.121-20.EA1a.tar

Catalyst 2950 EI and SI cryptographic Cisco IOS image and CMS files

c2950-i6q4l2-tar.121-20.EA1a.tar

Catalyst 2950 EI and SI Cisco IOS image and CMS files


 

Table 4 Cisco IOS Software Image Files for Catalyst 2950 LRE Switches 

Filename
Description

c2950lre-i6l2q4-tar.121-20.EA1a.tar

Catalyst 2950 LRE Cisco IOS image and CMS files

c2950lre-i6k2l2q4-tar.121-20.EA1a.tar

Catalyst 2950 LRE cryptographic Cisco IOS image and CMS files


 

Table 5 Cisco IOS Software Image Files for Catalyst 2940 Switches 

Filename
Description

c2940-i6q4l2-tar.121-20.EA1a.tar

Catalyst 2940 Cisco IOS image and CMS files


 

Related Documentation

These documents provide complete information about the switches and are available at Cisco.com:

For Catalyst 3550:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/index.htm

For Catalyst 2955, Catalyst 2950, and Catalyst 2950 LRE:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/index.htm

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/index.htm

For Catalyst 2940:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2940/index.htm

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Ordering Documentation

You can find instructions for ordering documentation at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

You can order Cisco documentation in these ways:

Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Ordering tool:

http://www.cisco.com/en/US/partner/ordering/index.shtml

Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

You can send comments about technical documentation to bug-doc@cisco.com.

You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:

Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.

Cisco Technical Support Website

The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year at this URL:

http://www.cisco.com/techsupport

Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:

http://tools.cisco.com/RPF/register/register.do

Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool automatically provides recommended solutions. If your issue is not resolved using the recommended resources, your service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:

http://www.cisco.com/techsupport/servicerequest

For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

To open a service request by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553 2447

For a complete list of Cisco TAC contacts, go to this URL:

http://www.cisco.com/techsupport/contacts

Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.

Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:

http://www.cisco.com/go/marketplace/

The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://cisco.com/univercd/cc/td/doc/pcat/

Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:

http://www.ciscopress.com

Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:

http://www.cisco.com/packet

iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

World-class networking training is available from Cisco. You can view current offerings at this URL:

http://www.cisco.com/en/US/learning/index.html