Table Of Contents
Product Bulletin, No. 1872
Cisco IOS Software Release 12.2(8)YM
This product bulletin describes the new features introduced in Cisco IOS® Software Release 12.2(8)YM.
New Features
HSRP—Hot Standby Routing Protocol
Cisco 806, 826/827/827H/827-4V, 828—PLUS feature sets
HSRP allows a secondary router with a backup WAN connection to take the role of the primary router and connection should the primary CPE and/or the primary WAN fail for any reason. The role implies that the routers create a common virtual MAC and IP address and communicates such as the backup router checks for availability of the primary router and or the connection (whichever is monitored).
DNS Proxy
Cisco 806, 826/827/827H/827-4V, 828— all feature sets
The ability to act as a DNS server (really a proxy) for LAN connected devices, in order to always have a DNS server address to give to DHCP clients regardless if the WAN DNS server has been learned over IPCP or DHCP already.
Proxy DNS makes it much easier to configure the router, since there is no need to know what IP address is assigned to E0.
NAT Skinny Pass-Through
Cisco 806, 826/827/827H/827-4V, 828— PLUS feature sets
NAT pass-through feature. Cisco IP phones use the Selsius Skinny Station Protocol to connect with and register to the Cisco Call Manager (CCM). Messages flow back and forth, that include IP address and port information, used to identify other IP phone users with which a call can be placed.
To be able to deploy Cisco IOS NAT between the IP phone and CCM in a scalable environment, NAT needs to be able to detect the Selsius Skinny Station Protocol and understand the information passed within the messages.
When an IP phone attempts to connect to the CCM and it matches the configured NAT translation rules, NAT will translate the original source IP address and replace it with one from the configured pool. This new address will be reflected in the CCM and be visible to other IP phone users. This feature will need to be enabled by a command specifying the port used.
NAT SIP Pass-Through
Cisco 806, 826/827/827H/827-4V, 828— PLUS feature sets
NAT pass-through feature. The SIP is an application-layer signaling protocol for creating and controlling multimedia sessions with two or more participants and a client-server protocol transported over TCP or UDP. The messages in the protocol might have IP addresses embedded in the packet payload. If a message passes through a router configured with NAT, the embedded information must be translated and encoded back to the packet. This feature is enabled by default and configuration is only needed for use of non standard ports.
Music on Hand Live Feed (MoH):
Cisco 1700 Series
This feature provides support for MoH from a live audio feed connected to the router by an analog voice port. A Foreign Exchange Office (FXO) analog voice port or Ear and Mouth (E&M) analog voice port on the router provides MoH to the ITS system. The router checks the connection every 30 seconds and re-establishes it if the MoH call is terminated. In addition, the music file in the flash provides redundancy if the live audio feed is disconnected or discontinued.
Speed-Dial Directory:
Cisco 1700 Series
Local speed-dial is a new option on the IP Phone. For the local speed-dial option to be selected, a flash file named "speeddial.xml" is sent to a phone. In order for this feature to function, the "speeddial.xml" file must be in the flash.
Top-Line Description:
Cisco 1700 Series
The top-line description is a "label" on the top black bar of the 7960 or the 7940. The top-line description can be labeled using a configuration command. Examples of the label are "Cisco Systems" or "408-525-6000."
ICS-7750
The are no new features for this release, as this is a maintenance release for the following new features for the previous 12.2(8)YL release for the same platform.
The following are IOS features supported with 12.2(8)YM for the MRP300, MRP3-8FXS, and MRP3-16FXS:
Voice WIC support:
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VIC-4FXO-M1 with battery reversal detection and Caller ID support
WAN QoS feature support including:
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Analog Voice image supporting analog and BRI Voice Interface Cards for the ICS-7750 Analog Voice (ICS-7750-AV) package.
Digital Voice image supporting analog and digital Voice Interface Cards (VWIC) for the ICS-7750 Digital Voice (ICS-7750-DV) package. This image does not support data channel groups on VWICs.
Software Maintenance Support
Maintenance for these features will be available on future 12.2X special releases until the code is incorporated into the seventh maintenance software release of 12.2T.
Detailed Information
For more detailed information about the platforms and features of Cisco IOS Software Release 12.2(8)YM, reference the following documents:
Release Notes for the Cisco 1700 series platforms for Cisco IOS Software Release 12.2(8)YM at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/1700/rn1700ym.htm
Release Notes for the Cisco 820 series platforms for Cisco IOS Software Release 12.2(8)YM at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/800/rn800ym.htm
Release Notes for the Cisco ICS-7750 for Cisco IOS Software Release 12.2(8)YM at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/ics7750/rn7750ym.htm
Life Span
Cisco IOS Software Release 12.2(8)YM will be sold until the seventh maintenance release of Cisco IOS Software Release 12.2T.
Supported Hardware Platforms
The MOH Live Feed, Speed Dial, and Top Line description are supported on the following platforms: Cisco 1751 and 1760.
Hot Standby Routing Protocol, DNS Proxy, NAT pass-through for SIP and Skinny descriptions are supported on Cisco 806, 826, 827, 827H, 827-4V, and 828. Loss of Margin Monitor and DNS Proxy will be supported in a later release for the SOHO 76, 77, 77H, and 78.
The Cisco ICS 7750 has no new features compared to the previous 12.2(8)YL release and this release is considered as a maintenance release only.
Image product numbers and descriptions for the 1700 Series are listed below:
Table 1
Image product numbers and descriptions for the 800 Series are listed below