Table Of Contents
Product Bulletin No. 2339
New Cisco IOS Software Release 12.1(19)EA1 for
Cisco Catalyst 3750, Catalyst 3550, Catalyst 2970,
Catalyst 2955, Catalyst 2950, Catalyst 2950-LRE,
and Catalyst 2940 Series Switches
Cisco Systems® is pleased to announce Cisco IOS® Software updates for the Cisco® Catalyst® 3750, Catalyst 3550, Catalyst 2970, Catalyst 2955, Catalyst 2950, Catalyst 2950-LRE, and Catalyst 2940 series intelligent Ethernet switches. This new release furthers Cisco's leadership in providing secure, reliable, and easily managed LAN switching solutions.
This product bulletin describes the content and delivery information about Cisco IOS Software Release 12.1(19)EA1. For more information about the Cisco IOS Software release process, see Product Bulletin No. 537.
Cisco continues its commitment to provide the highest degree of security available with the support of Secure Shell Protocol Version 2 (SSHv2). SSHv2 provides the most reliable and secure communication for administrators to use when configuring and monitoring Cisco Catalyst switches.
Unicast MAC Filtering can be used to deny any type of packet with a matching MAC address from being switched. This allows even non-IP packets to be filtered and controlled.
Unknown Unicast/Multicast Port Blocking can be used to drop packets that the switch does not already know how to forward. Already supported on the Cisco Catalyst 3750 and Catalyst 3550, this feature is now available on the Cisco Catalyst 2950G Series.
As customers transition to Gigabit Ethernet powered networks, the Time Domain Reflectrometer (TDR) feature provides diagnostic capabilities to ensure existing network cabling is sound and meets the requirements of these new, high-speed networks.
The Auto-MDIX (media dependent interface crossover) feature is now available on the Cisco Catalyst 2940. This feature simplifies the knowledge required to cable devices together by allowing straight and crossover cables to be used interchangeably.
The Cisco Catalyst 2950-LRE now supports Express Setup to provide the simple and convenient initial setup process available on other Cisco Catalyst Series switches.
A Dynamic Host Configuration Protocol (DHCP) server is now available in Cisco IOS Software. It provides a convenient deployment option for networks that do not have a dedicated DHCP server. A DHCP server provides an IP address to hosts, such as personal computers, that request them.
For customers who require fine-grained control over IP address assignment of the DHCP server, DHCP Snooping Option 82 provides additional information from a Cisco Catalyst switch to a DHCP server. The switch augments host requests with additional information (such as the host switch port) to allow the DHCP server to make more sophisticated address assignments. An application of this feature can be to ensure any device that gets plugged into a particular switch port gets the same IP address.
Strict Priority Queuing (Expedite) is now available on the Cisco Catalyst 3750. This feature now enables more consistent deployment of quality of service (QoS) across the Cisco Catalyst Series of intelligent Ethernet switches.
Support for the latest version of Internet Group Management Protocol Version 3 (IGMPv3) is added with IGMPv3 Snooping. IGMP Snooping ensures efficient distribution of multicast traffic to only the endpoints that need to receive it.
PAgP/LACP/UDLD (Point Aggregation Protocol/Link Aggregation Control Protocol/Unidirectional Link Detection) Layer 2 Tunneling allows Cisco EtherChannel® technology and other select Layer 2 protocols to be transparently tunneled in a point-to-point connection over a network between two edge switches. As an example, this feature can be used to extend these protocols between two switches over an Internet service provider's (ISP's) network.
IGMP Throttling enhancements are available in this release to provide full backward compatibility of this feature with the Cisco Catalyst 3500XL.
Coarse wavelength-division multiplexing (CWDM) Small Form Factor Pluggable (SFP) slots are now supported on Cisco Catalyst 3750 and Catalyst 2970 switches with SFP slots. This allows these switches to support CWDM in deployments such as point-to-point campus extensions and metropolitan (metro) access service ring topologies.
Client Side Install is a new feature in the Cisco Cluster Management Suite (CMS) that lets users install the Cisco CMS Software files found on the switch to a personal computer. The benefit of this is an improved launch time for Cisco CMS, particularly when the switch is located across a slow-speed network connection.
The Cisco CMS Plug-In is a simple installation program that configures the management station with the correct run-time software to support Cisco CMS. This removes the burden of having to manually find the correct version of the run-time software for a particular version of Cisco CMS.
New Features in Cisco IOS Release 12.1(19)EA1
Table 1 lists the features that will be delivered in the initial release of Cisco IOS Software Release 12.1(19)EA1, and Table 2 lists those that will be delivered in Cisco CMS Software. Table 3 gives the products supported with this release.
Software download—Software available October 2003:
Cisco Catalyst 3750 Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat3750
Cisco Catalyst 3550 Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat3550
Cisco Catalyst 2970 Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2970
Cisco Catalyst 2955 Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2955
Cisco Catalyst 2950 Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2950
Cisco Catalyst 2950-LRE Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2950LRE
Cisco Catalyst 2940 Series— http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2940
Because of export restrictions on strong cryptography software, a separate image is required for the cryptographic features (SSH, Simple Network Management Protocol Version 3 [SNMPv3], and Kerberos). These software images can be downloaded from the same location given previously.
Cisco Catalyst 3750 Series product information:
Cisco Catalyst 3550 Series product information:
Cisco Catalyst 2970 Series product information:
Cisco Catalyst 2955 Series product information:
Cisco Catalyst 2950 Series product information:
Cisco Catalyst 2950-LRE Series product information:
Cisco Catalyst 2940 Series product information:
Cisco Catalyst 3750, Catalyst 3550, Catalyst 2970, Catalyst 2955-LRE, Catalyst 2950-LRE, Catalyst 2950-LRE, and Catalyst 2940 release notes:
Cisco IOS Software Release 12.1(19)EA1 follows the standard Cisco support policy as indicated at the following link: http://www.cisco.com/en/US/products/products_end-of-life_policy.html.
Software Image Migration Guide
Figure 1 displays Cisco IOS Software Release 12.1(19)EA1 release capability relative to the 12.1 and 12.1E releases. This diagram identifies the recommended migration path. For more information about the Cisco IOS Software release process, see Product Bulletin No. 537.
Cisco IOS Release 12.1EA Release Train