Installation guide

23
Release Notes for Cisco uBR7200 Series for Cisco IOS Release 12.1 T
78-10643-04 Rev. B0
New and Changed Information
For a complete description of Expression MIB functionality, see the "Distributed Management
Expression MIB" Internet-Draft document, available through the ITEF at
http://www.ietf.org/ids.by.wg/disman.html.
Individual SNMP Trap Support
The Individual SNMP Trap Support feature adds the ability to enable or disable SNMP system
management notifications (traps) individually. SNMP traps that can be specified are “authentication”,
“linkup”, “linkdown”, and “coldstart”. This feature expands the functionality of the snmp-server
enable traps snmp command.
For documentation, see
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t3/dtitraps.htm
Source Specific Multicast
The Source Specific Multicast (SSM) feature is an extension of IP multicast, where datagram traffic is
forwarded to receivers from only those multicast sources that the receivers have explicitly joined. When
SSM is used, only source-specific multicast distribution trees (no shared trees) are created.
SSM is a datagram delivery model that best supports one-to-many applications, also known as broadcast
applications. SSM is the core networking technology for the Cisco implementation of the IP Multicast
lite suite of solutions targeted for audio and video broadcast application environments. This feature
module introduces the following Cisco IOS components that support SSM:
• PIM-SS (PIM source specific)
• Internet Group Management Protocol Version 3 lite (IGMP v3lite)
• URL Rendezvous Directory (URD)
The Cisco implementation of SSM will soon be deployed with Internet Group Management Protocol
Version 3 (IGMPv3) support. Cisco developed IGMP v3lite and URD to support the deployment of
applications using SSM services before the introduction of IGMPv3.
No New Hardware Features in Release 12.1(2)T
There are no new hardware features supported by the Cisco uBR7200 Series Universal Broadband
Routers in Cisco IOS Release 12.1(2)T.
New Software Features in Release 12.1(2)T
The following new software features are supported by the Cisco uBR7200 Series Universal Broadband
Routers in Cisco IOS Release 12.1(2)T.
MC16S LED Enhancement
Using Cisco IOS Release 12.1(2)T, MGR ACT LED behavior on the Cisco MC16S Cable Modem Card
differs (see Table 7). This feature also stops Spectrum Scanning on one or more upstream ports if the
upstream or the whole interface is shut down