Table Of Contents
Product Bulletin, No. 1343
Cisco IOS Early Deployment Release 12.1(5)YE
IntroductionThis Product Bulletin describes the content and delivery information concerning Cisco IOS(TM) software release 12.1(5)YE. 12.1(5)YE is a Early Deployment (ED) 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(5)T.The platform and features delivered with this ED release will be incorporated into Cisco IOS 12.2(4)T and subsequent Cisco IOS 12.2(X)T releases.
Migration GuideDiagram 1 below displays Cisco IOS 12.1(5)YE release functionality relative to the 12.1 and 12.1T releases. This diagram also identifies the recommended migration path.
New Features in Cisco IOS Release 12.1(5)YEThe following new features are supported on the Catalyst 4224 in release 12.1(5)YE:
Table 1 Cisco IOS Release12.1(5)YE New Features
New Feature Platform 1 Platform 2 Platform 3 Platform 4
Survivable Remote Site Telephony
Access Gateway Switch
Please see the next section for documents that address details on these new features. Any ED release of software should be utilized first in a test network before being deployed in a production network.
Detailed InformationSurvivable Remote Site TelephonyEnterprise 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.
Ethernet SwitchingThe Catalyst 4224 supports 802.1p CoS with port-based prioritization and port-based reclassification, which allows the switch to change the CoS settings of tagged packets on a per-port basis. To prioritize mission-critical traffic, such as VoIP and IP-based video applications, you can configure up to four queues using a WRR scheduler. With the auxiliary VLAN feature, network administrators can segment phonesinto separate logical networks even though the data and voice infrastructure is physically the same. The auxiliary VLAN feature places the phones into their own VLANs without the need for end-user intervention. You can plug the phone intothe switch, and the switch provides the phone with the necessary VLAN information.For more detailed information about the platforms and features being delivered in12.1(5)YE , please reference the following documents:
Table 2 Cisco IOS Release12.1(5)YE Feature Sets, Images, and Memory Recommendations
Download InformationCustomers can download Cisco IOS Release12.1(5)YE software from Cisco Connection Online (CCO) in the Software Image Library.http://www.cisco.com/public/sw-center/sw-ios.shtml