OL-19218-01 First ReleaseThese release notes describe new features and significant software components for the Cisco 800 series Integrated Services Routers (ISRs) that support Cisco IOS Release 12.4(20)YA. These release notes are updated as needed.
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Use these release notes with the 12.4T and.For a list of the software caveats that apply to the Release 12.4(20)YA releases, see the, and see the online T document. The caveats document is updated for every 12.4T maintenance release. Contents. System RequirementsThis section describes the system requirements for Cisco IOS Release 12.4(20)YA and includes the following sections:. Memory Requirementslists the memory requirements for the Cisco IOS feature sets that are supported by Cisco IOS Release 12.4(20)YA on the Cisco 800 series routers. Note There is an exception with the 'External Antenna Configuration' settings. The Cisco 800 series ISRs have fixed antennas, however the enable option for 'External Antenna Configuration' remains in the GUI, so no action will occur if this option is chosen.CaveatsFor general information on caveats and the bug toolkit, see About Cisco IOS Release Notes located atThis section contains the following caveat information:.
Open Caveats - Release 12.4(20)YA3There are no open caveats in this release. Resolved Caveats - Release 12.4(20)YA3 CSCsu84868 c3845: Error mesg%SYS-2-BADSHARE: Bad refcount in datagramdone.Symptom Cisco 3845 experiences trackback error:Aug 14 12:34:55.960:%SYS-2-BADSHARE: Bad refcount in datagramdone, ptr=7006C010, count=0, -Traceback= 0x61816650 0x60641BD0 0x60C27A80 Aug 17 16:51:45.739:%SYS-2-BADSHARE: Bad refcount in datagramdone, ptr=705985A4, count=0, -Traceback= 0x61816650 0x60641BD0 0x60C27A80Conditions The error message occurs on a router running the c3845-adventerprisek9ivsli-mz.124-15.T5 image.Workaround None. CSCsy22826 VG224 sending incorrect ssType in 1+ node CUCM cluster.Symptom VG224 endpoint does not connect to callback destination, once the callback destination is idle.Conditions Multi node cluster and VG224 endpoint is registered with node other then the first node in the cluster.Workaround Have VG224 endpoints registered with first node.Further Problem Description: The activation of the callback is successful. What fails is when the callback destination becomes idle again and the VG224 endpoint gets notified (ring). After the VG224 endpoint goes offhook, the system should automatically connect to the Callback destination.This does not happen and VG224 endpoint gets silence. Limitations and RestrictionsThere are no known limitations or restrictions in this release. Additional ReferencesUse this release note with the documents and websites in this release note and the documents listed in the section.
Release-Specific DocumentsThe following documents are specific to Release 12.4 and apply to Release 12.4(20)YA. Cisco IOS Software Documentation SetThe Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents.
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Documentation ModulesEach module in the Cisco IOS documentation set consists of one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference. Is available in html or pdf form.Select your release and click the command references, configuration guides, or any other Cisco IOS documentation you need. NoticesSee the ' ' section in About Cisco IOS Release Notes. Use this document in conjunction with the documents listed in the section.