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Cisco Catalyst 4900 Series Switches

Cisco IOS Software Release 12.2(25)SG For Cisco Catalyst 4900 Series Switches

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Product Bulletin, No. 3036

This product bulletin describes the hardware and software features supported by Cisco IOS® Software Release 12.2(25)SG for the Cisco® Catalyst® 4900 Series Switches.

NEW SOFTWARE FEATURES

NAC L2 IP

NAC L2 IP is an integral part of Cisco Network Admission Control. It offers the first line of defense for infected hosts (PCs and other devices attached to a LAN port) attempting to connect to the corporate network. NAC L2 IP on the Cisco Catalyst 4500 Series performs posture validation at the Layer 2 edge of the network for non-802.1x-enabled host devices. Host device posture validation includes anti-virus state and OS patch levels. Depending on the corporate access policy and host device posture, a host may be unconditionally admitted, admitted with restricted access, or quarantined to prevent the spread of viruses across the network.

NAC L2 802.1x

The Cisco Catalyst 4500 Series extends NAC support to 802.1x-enabled devices. Like NAC L2 IP, the NAC L2 802.1x feature determines the level of network access based on endpoint information.

Time Domain Reflectometry

Time Domain Reflectometry (TDR) is a technology used for diagnosing copper cable state. TDR detects impedance changes along an attached cable (for example, Category V) to determine opens, shorts, and terminated states. The fault distance from the switch is also supported. The Cisco Catalyst 4948 and Catalyst 4948-10GE switches support TDR .

802.1x Authentication Failure

The 802.1x Authentication Failure feature offers certain limited network access to guests with 802.1x supplicants enabled. This differs from the 802.1x guest VLAN feature for those guests without 802.1x supplicants. 802.1x Authentication Failure VLAN is a user-configurable VLAN, aside from the guest VLAN. Guests (contractors, visitors) with 802.1x supplicants enabled will fail 802.1x authentication. These guest users will be put into this special failure VLAN, typically with Internet access only. The 802.1x Authentication Failure VLAN can be configured to provide any type of limited access to network resources, including Internet access.

OSPF Fast Convergence

OSPF Fast Convergence minimizes system down time when an unexpected event, such as link failure, occurs. OSPF Fast Convergence consists of the following components:

Fast Hellos-Support for user-configurable, subsecond, Open Shortest Path First (OSPF) hello intervals results in faster convergence in an OSPF network, especially in LAN segments.

Incremental Shortest Path First (iSPF)-Enhances routing to intelligently determine the change in the Shortest Path Tree (SPT) and re-compute only the effected nodes upon SPT update. This increases efficiency and allows faster OSPF convergence on new routing topologies in reaction to network events.

LSA Throttling-OSPF Link-State Advertisement (LSA) throttling provides a dynamic mechanism to slow down LSA updates in OSPF during times of network instability. LSA rate limiting in milliseconds allows faster OSPF convergence.

HTTPS

HTTPS is the secure version of HTTP. It uses Secure Sockets Layer (SSL) to provide device authentication and data encryption. HTTPS is required for secure communications with Cisco Network Assistant.

IS-IS MIB

Intermediate System-to-Intermediate System (IS-IS) is a link-state routing protocol designed for use within a single autonomous system and widely deployed as the Interior Gateway Protocol (IGP) of choice by many service providers. The IS-IS MIB enhances monitoring capabilities of network events for the overall state of the network.

NEW CISCO IOS SOFTWARE PACKAGING FOR THE CISCO CATALYST 4900 SERIES

Cisco Systems ® announces a new Cisco IOS Software package for the Cisco Catalyst 4900 Series, creating a new foundation for features and functionality, and offering consistency across all Catalyst switches. The new Cisco IOS Software release train is designated as 12.2SG.
Prior Cisco IOS Software images for the Catalyst 4900 Series, formally known as "SMI" and "EMI" images, now map to "IP Base" and "Enterprise Services," respectively. Unless otherwise specified, all currently shipping Catalyst 4900 software features based on Cisco IOS Software are supported in the 12.2(25)SG, IP Base image with a few points to note:

• The IP Base image will not support the following routing related features: BGP, EIGRP, OSPF, IS-IS, IPX, Apple Talk, Virtual Route Forwarding (VRF)-lite, and Policy-Based Routing (PBR)

• The IP Base image will now support EIGRP-Stub for Layer 3 routing. For more information on EIGRP-Stub functionality, go to http://www.cisco.com/en/US/technologies/tk648/tk365/technologies_white_paper0900aecd8023df6f.shtml.

The Enterprise Services image supports all Catalyst 4900 Series software features based on Cisco IOS Software, including enhanced routing. Table 1 shows a more detailed description of the feature differences between the IP Base and Enterprise Services (ES) images.

Table 1. Feature Comparison for Cisco IOS Software Release 12.2(25)SG IP Base and Enterprise Services

Feature

IP Base Image

Enterprise Services Image

NACv2.0

Yes

Yes

RIP and Static Route

Yes

Yes

EIGRP

No

Yes

EIGRP-Stub

Yes

Yes

OSPF and IS-IS

No

Yes

BGP

No

Yes

VRF-Lite

No

Yes

Apple Talk

No

Yes

IPX

No

Yes

PBR

No

Yes

CISCO IOS SOFTWARE MIGRATION GUIDE

Figure 1 displays the Cisco IOS Software Release 12.2(25)SG plan relative to the 12.2S and 12.1 releases, and identifies the recommended migration path.

Figure 1. Cisco IOS Software Release Plan for the Cisco 4900 Series

Summary of Migration Plan

• Customers requiring the latest Cisco Catalyst 4900 Series hardware and software features should migrate to Cisco IOS Software Release 12.2(25)SG. In the new Cisco IOS Software package, the 12.2EW designation is replaced by 12.2SG. Both software release trains are based on 12.2S release 5.

• Releases 12.2(18)EW and 12.2(25)EWA will continue offering maintenance releases.

• The 12.1 EW train will reach end of sale on October 4, 2005.

• The Cisco IOS Software 12.1E releases will stop at 12.1(26)E2 because of limited hardware and software support.

SUPPORT

Support for Cisco IOS Software Release 12.2(25)SG follows the standard Cisco support policy, available at http://www.cisco.com/en/US/products/products_end-of-life_policy.html.
For more information about the Cisco Catalyst 4900 Series, visit http://www.cisco.com/en/US/products/ps6021/index.html.

PRODUCT NUMBERS

Tables 2 and 3 provide product numbers and ordering information for Cisco IOS Software Release 12.2(25)SG and for supporting hardware.

Table 2. Cisco IOS Software Release 12.2(25)SG Product Number and Images

Product Number

Description

Image

S49IPB-12225SG

Cisco IOS Software for the Cisco Catalyst 4900 Series (IP Base image)

cat4500-ipbase-mz

S49IPBK9-12225SG

Cisco IOS Software for the Cisco Catalyst 4900 Series (IP Base image with Triple Data Encryption Standard [3DES])

cat4500-ipbasek9-mz

S49ES-12225SG

Cisco IOS Software for the Cisco Catalyst 4900 Series (Enterprise Services image)

cat4500-entservices-mz

S49ESK9-12225SG

Cisco IOS Software for the Cisco Catalyst 4900 Series (Enterprise Services image with 3DES)

cat4500-entservicesk9-mz

Table 3. Cisco IOS Software Release 12.2(25)SG Hardware Support

Product Number

Description

WS-C4948

Cisco Catalyst 4948 Switch, optional software image, optional power supplies, fan tray

WS-C4948-S

Cisco Catalyst 4948 Switch, IP Base Image, one AC power supply, fan tray

WS-C4948-E

Cisco Catalyst 4948 Switch, Enterprise Services Image, one AC power supply, fan tray

WS-C4948-10GE

Cisco Catalyst 4948-10GE Switch, optional software image, optional power supplies, fan tray

WS-C4948-10GE-S

Cisco Catalyst 4948-10GE Switch, IP Base Image, one AC power supply, fan tray

WS-C4948-10GE-E

Cisco Catalyst 4948-10GE Switch, Enterprise Services Image, one AC power supply, fan tray

Text Box:  Corporate HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-4000	800 553-NETS (6387)Fax:	408 526-4100	European HeadquartersCisco Systems International BVHaarlerbergparkHaarlerbergweg 13-191101 CH AmsterdamThe Netherlandswww-europe.cisco.comTel:	31 0 20 357 1000Fax:	31 0 20 357 1100	Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-7660Fax:	408 527-0883	Asia Pacific HeadquartersCisco Systems, Inc.168 Robinson Road#28-01 Capital TowerSingapore 068912www.cisco.comTel: +65 6317 7777Fax: +65 6317 7799Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed onthe Cisco Website at www.cisco.com/go/offices.Argentina · Australia · Austria · Belgium · Brazil · Bulgaria · Canada · Chile · China PRC · Colombia · Costa Rica · Croatia · Cyprus Czech Republic · Denmark · Dubai, UAE · Finland · France · Germany · Greece · Hong Kong SAR · Hungary · India · Indonesia · Ireland · Israel Italy · Japan · Korea · Luxembourg · Malaysia · Mexico · The Netherlands · New Zealand · Norway · Peru · Philippines · Poland · Portugal Puerto Rico · Romania · Russia · Saudi Arabia · Scotland · Singapore · Slovakia · Slovenia · South Africa · Spain · Sweden · Switzerland · Taiwan Thailand · Turkey · Ukraine · United Kingdom · United States · Venezuela · Vietnam · ZimbabweCopyright  2005 Cisco Systems, Inc. All rights reserved. CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, TeleRouter, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0502R)	205389.CE_ETMG_CC_10.05Printed in the USA Text Box:  Corporate HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-4000	800 553-NETS (6387)Fax:	408 526-4100	European HeadquartersCisco Systems International BVHaarlerbergparkHaarlerbergweg 13-191101 CH AmsterdamThe Netherlandswww-europe.cisco.comTel:	31 0 20 357 1000Fax:	31 0 20 357 1100	Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:	408 526-7660Fax:	408 527-0883	Asia Pacific HeadquartersCisco Systems, Inc.168 Robinson Road#28-01 Capital TowerSingapore 068912www.cisco.comTel: +65 6317 7777Fax: +65 6317 7799Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed onthe Cisco Website at www.cisco.com/go/offices.Argentina · Australia · Austria · Belgium · Brazil · Bulgaria · Canada · Chile · China PRC · Colombia · Costa Rica · Croatia · Cyprus Czech Republic · Denmark · Dubai, UAE · Finland · France · Germany · Greece · Hong Kong SAR · Hungary · India · Indonesia · Ireland · Israel Italy · Japan · Korea · Luxembourg · Malaysia · Mexico · The Netherlands · New Zealand · Norway · Peru · Philippines · Poland · Portugal Puerto Rico · Romania · Russia · Saudi Arabia · Scotland · Singapore · Slovakia · Slovenia · South Africa · Spain · Sweden · Switzerland · Taiwan Thailand · Turkey · Ukraine · United Kingdom · United States · Venezuela · Vietnam · ZimbabweCopyright  2005 Cisco Systems, Inc. All rights reserved. CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, TeleRouter, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0502R)	205389.CE_ETMG_CC_10.05Printed in the USA