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Cisco IOS Software Releases 12.1 Mainline

12.1(5)YE Product Bulletin

Product Bulletin, No. 1345

Cisco IOS Maintenance Release 12.1(5)YE2

Introduction

This Product Bulletin describes the content and delivery information concerning Cisco IOS(TM) software release 12.1(5)YE.2 12.1(5)YE2 is a Maintenance Release parented to 12.1(5)T and supporting the Catalyst 4224 Access Gateway Switch. This release contains all new features delivered in 12.1 up to 12.1(4)T.

The platform and features delivered with this ED release will be incorporated into Cisco IOS 12.2(9)T and subsequent Cisco IOS 12.2(X)T releases.

Migration Guide

Diagram 1 below displays Cisco IOS 12.1(5)YE2 release functionality relative to the 12.X and 12.xT releases. This diagram also identifies the recommended migration path.




New Features in Cisco IOS Release 12.1(5)YE2

The following new features are supported on the Catalyst 4224 in release 12.1(5)YE2:


Table 1: Cisco IOS Release12.1(5)YE New Features
New Feature Platform 1 Platform 2 Platform 3 Platform 4

Survivable Remote Site Telephony

Catalyst 4224

Access Gateway Switch

X

X

X

Please see the next section for documents that address details on these new features. Any Maintenance Release of software should be utilized first in a test network before being deployed in a production network.

Detailed Information

Survivable Remote Site Telephony

Enterprise customers wishing to deploy IP telephony at their branch offices using a centralized Call Manager architecture are very interested in call-processing redundancy capabilities at these remote sites. Such redundancy ensures negligible impact to the business in case a Wide Area Network outage prevents the centralized Call Manager from being able to process telephony requests from IP phones at the branch office. The Survivable Remote Site Telephony feature integrates call processing capability directly into IOS, enabling the Catalyst 4224 at the branch office to provide telephony redundancy. For more detailed information about the platforms and features being delivered in12.1(5)YE2 , please reference the following documents:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121relnt/index.htm

Support

Cisco IOS software release 12.1(5)YE2 follows the standard Cisco support policy as indicated in the following link.

http://www.cisco.com/warp/public/437/27.html

Product Numbers


Table 2: Cisco IOS Release12.1(5)YE2 Feature Sets, Images, and Memory Recommendations
Platform Software Feature Set Product Code Image Flash DRAM

C4224

IP PLUS

S4224CP-12105YE

c224-isx3-mz

32MB

64MB

C4224

IP PLUS/FW

S4224CH-12105YE

c422-io3sx3-mz

32MB

64MB

C4224

IP PLUS/IPSEC 56

S4224CK8-12105YE

c4224-isx356i-mz

32MB

64MB

C4224

IP PLUS/IPSEC 3DES

S4224CK9-12105YE

c4224-ik2sx3-mz

32MB

64MB

C4224

IP PLUS/FW/IPSEC 56

S4224CHK8-12105YE

c4224-io3sx356i-mz

32MB

64MB

C4224

IP PLUS/FW/IPSEC 3DES

S4224CHK9-12105YE

c4224-ik2o3sx3-mz

32MB

64MB

Download Information

Customers can download Cisco IOS Release12.1(5)YE2 software from Cisco Connection Online (CCO) in the Software Image Library.

http://www.cisco.com/public/sw-center/sw-ios.shtml