Cisco Cisco IOS Software Release 12.1(22)EA4 Données agrégées

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PRODUCT BULLETIN NO. 2798

NEW CISCO IOS SOFTWARE RELEASE 12.1(22)EA4 FOR CISCO
CATALYST 2950, CATALYST 2950 LRE, AND CATALYST 2940
SERIES AND CATALYST 2955 SWITCHES

Cisco Systems

announces Cisco IOS

Software updates for the Cisco

Catalyst

2950, Catalyst 2950 LRE, and Catalyst 2940

series and Cisco Catalyst 2955 Intelligent Ethernet switches. This new software release furthers Cisco leadership in providing

secure, reliable, and feature-rich LAN switching solutions. This product bulletin contains content and delivery information for

Cisco IOS Software Release 12.1(22)EA4. For more information about the Cisco IOS Software release process, refer to

Product Bulletin 537.

OVERVIEW

Multicast Cisco EtherChannel

load-balancing support allows load-balancing multicast traffic egressing an EtherChannel based strictly on

destination MAC address. This allows multicast traffic to be distributed across all EtherChannel member ports, thus removing the restriction that

multicast traffic is only forwarded on the the EtherChannel default port. Please note that unknown multicast destinations will not be load balanced

and instead will be flooded on the EtherChannel default port. Multicast addresses reserved for different protocols (for example, Cisco Discovery

Protocol or Spanning Tree Protocol) will also use the default port

NEW FEATURES IN CISCO IOS SOFTWARE RELEASE 12.1(22)EA4

The new features shown in Table 1 are delivered in Cisco IOS Software Release 12.1(22)EA4.

Table 1.

Cisco IOS Software Release 12.1(22)EA4 New Features

Feature

Cisco Catalyst 2955

Switch Enhanced

Image

Cisco Catalyst 2950

Series Enhanced

Image

Cisco Catalyst 2950

Series Standard

Image

Cisco Catalyst 2950

LRE Series

Cisco Catalyst 2940

Series Standard

Image

Multicast

EtherChannel

Load

Balancing

The Layer 2+ capable fixed-configuration Cisco Catalyst switches supported with this software release are listed in Table 2.