Release Notes for the Cisco uMG9850 QAM Module, Cisco IOS Release 12.2(20)EU1

These release notes describe the features, memory requirements, and hardware and software requirements in Cisco IOS release 12.2(20)EU1 to support the Cisco uMG9850 QAM Module. The Cisco uMG9850 supports the ITU-T J.83 Annex B standard for the delivery of digital video and audio signals.

Note This document supersedes and replaces Release Notes for Cisco uMG9850 QAM Module, Cisco IOS Release 12.2(20)EU. That software release is no longer available. For more information, see Introduction.

Note Use these release notes with Release Notes for Cisco Catalyst 4500 Series Switch, Cisco IOS Release 12.2(20)EWA, located on Cisco.com. Refer to Obtaining Documentation.

Document History

Introduction

Cisco IOS Release 12.2(20)EU1 is an Early Deployment (ED) release based on Cisco IOS Release 12.2(20)EWA.

Document Version	Date	Notes
1	05/12/2005	This document was first published for Cisco IOS Release 12.2(20)EU1. For more information, see Introduction, below.

This document supersedes and replaces Release Notes for the Cisco uMG9850 QAM Module, Cisco IOS Release 12.2(20)EU.

Although Cisco IOS Release 12.2(20)EU has been removed from CCO, no catastrophic or deferring defect exists. You do not need to upgrade your images. A legacy feature has been removed, and images with that feature are no longer available on CCO. You may continue to operate with existing copies of Cisco IOS Release 12.2(20)EU in your network.

Note Cisco IOS Release 12.2(20)EU1 is compatible with Cisco IOS Release 12.2(20)EWA. Cisco IOS Release 12.2(20)EU1 is designed, however, to support the functionality of the Cisco uMG9850 in VoD and digital broadcast applications. Not all features applicable to traditional switching apply to the Cisco uMG9850. For configuration instructions and the command reference for the Cisco uMG9850, refer to Configuring the Cisco uMG9850 QAM Module in Obtaining Documentation.

The Cisco uMG9850, designed for the Cisco Catalyst 4500 series switches, provides video-on-demand (VoD) and digital broadcast services for a hybrid fiber-coaxial (HFC) cable network. It accepts Moving Pictures Expert Group-2 (MPEG-2) digital video from an IP network, and outputs the video as a quadrature amplitude modulated (QAM) RF stream that can be received by digital set-top boxes (STBs) over the cable network.

System Requirements

This section describes the system requirements for Cisco IOS Release 12.2(20)EU1:

Memory Requirements

Minimum memory and flash configurations on the Cisco Catalyst 4500 series switch are sufficient to support the Cisco uMG9850 QAM Module.

Hardware Compatibility

Table 1 lists hardware that is compatible with the Cisco uMG9850 QAM Module when used with Cisco IOS Release 12.2(20)EU1.

Table 1 Hardware Compatibility
	Product Number	Description	Notes
Cisco Catalyst Switches	WS-C4503	Cisco Catalyst 4503 switch chassis
	WS-C4506	Cisco Catalyst 4506 switch chassis
	WS-C4507R	Cisco Catalyst 4507R switch chassis
Memory	MEM-C4K-FLD64M=	Cisco Catalyst 4500 Series Compact Flash, 64-MB option
Memory	MEM-C4K-FLD128M=	Cisco Catalyst 4500 Series Compact Flash, 128-MB option
Supervisor Engine	WS-X4013+	Cisco Catalyst 4500 Series Supervisor Engine II-Plus
	WS-X4013+/2	Cisco Catalyst 4507R Redundant Supervisor Engine II-Plus
	WS-X4515	Cisco Catalyst Supervisor Engine IV
	WS-X4515/2	Cisco Catalyst 4507R Redundant Supervisor Engine IV
Power Supplies	PWR-C45-1000AC	1000 W AC power supply	For the Cisco Catalyst 4506 or Cisco Catalyst 4507R switch chassis, can be configured with up to three Cisco uMG9850 QAM Modules. With four or five modules inserted in the Cisco Catalyst 4506 or 4507R switch chassis, the 1400W (AC or DC) power supply must be used. Can be configured with the maximum number of Cisco uMG9850 QAM Modules in the Cisco Catalyst 4503 switch chassis.
	PWR-C45-1000AC/2	Redundant power supply	Can be configured along with the 1000 W AC power supply.
	PWR-C45-1400DC-P	1400 W DC power supply with integrated power entry module (PEM)	For either switch chassis, can be configured with up to five Cisco uMG9850 QAM Modules.
	PWR-C45-1400DC-P/2	Redundant power supply	Can be configured along with the 1400 W DC power supply.
	PWR-C45-1400AC	1400 W AC power supply	Can be configured with the maximum number of Cisco uMG9850 QAM Modules in the Cisco Catalyst 4506 or 4507R switch chassis.
	PWR-C45-1400AC/2	Redundant power supply	Can be configured along with the 1400 W AC power supply.
Switching Modules	WS-X4148-RJ=	48-port 10/100 Fast Ethernet RJ-45 switching module
	WS-X4306-GB=	6-port 1000BASE-X (GBIC) Gigabit Ethernet switching module
	WS-X4712-UMG9850	Cisco Catalyst 4500 QAM Module, 12 RF ports, 24 QAM channels, ITU-T J.83 Annex B
SFPs	GLC-SX-MM=	1000BASE-SX SFP
	GLC-LX-SM=	1000BASE-LX SFP
	CWDM-SFP-XXXX=	Cisco CWDM SFP	XXXX=wavelength
GBICs	WS-G5483=	1000BASE-T GBIC
	WS-G5484=	1000BASE-SX short-wavelength GBIC (multimode only)
	WS-G5486=	1000BASE-LX/LH long-haul GBIC (single-mode or multimode)
	WS-G5487=	1000BASE-ZX extended-reach GBIC (single-mode)
	CWDM-GBIC-xxxx	Cisco 1000BASE-CWDM xxxx nm GBIC, where xxxx is the number 1470, 1490, 1510, 1530,1550, 1570, 1590, or 1610
	DWDM-GBIC-xx.yy	Cisco 1000BASE-DWDM ITU 100-GHz grid 15xx.yy nm GBIC
	WDM-GBIC-REC=	Cisco receive-only 1000BASE-WDM GBIC

Software Compatibility

The Cisco uMG9850 QAM Module is supported in Cisco IOS Release 12.1(20)EU, Cisco IOS Release 12.1(20)EU1, and Cisco IOS Release 12.2(20)EU1 (this release). Images for Cisco IOS Release 12.2(20)EU1 are listed in Table 2 and are available from Cisco.com at this URL:

Determining the Software Version

Table 2 Cisco IOS Software Release 12.2(20)EU1 Images and Features
Image	Description
cat4000-i9su3-mz	Cisco IOS software for the Cisco uMG9850 QAM Module—Basic MPEG-2 digital video gateway software image, including Routing Information Protocol (RIP) v1 and v2, and static routes.
cat4000-i5su3-mz	Cisco IOS software for the Cisco uMG9850 QAM Module—Enhanced MPEG-2 digital video gateway plus routing software image, including Open Shortest Path First (OSPF), Intermediate System to Intermediate System (IS-IS), Interior Gateway Routing Protocol (IGRP), and Enhanced IGRP (EIGRP).

To determine the version of Cisco IOS software running on a Cisco Catalyst 4500 series switch, log in to the switch and enter the show version EXEC command:

Upgrading from a Previous Software Release

Updating the Switch Software

For information on upgrading software in your Cisco Catalyst 4500 series switch, refer to Release Notes for the Catalyst 4500 Series Switch, Cisco IOS Release 12.2(20)EWA on Cisco.com at this URL:

Updating the Video Routing Configuration

The configuration of video routing has changed with Cisco IOS Release 12.2(20)EU1. If video routing was configured using the Cisco IOS Release 12.1(20)EU1, the video routing command must be changed to the new syntax.

If all the Cisco uMG9850 QAM modules in a chassis are currently configured into the same subnet, either the traffic has to be combined so that it flows to one single IP address in the subnet, or multiple subnets should be used. If separate subnets were used for each Cisco uMG9850, then only the video routing command and VLAN change are needed. (See Video Routing on VLAN Interfaces.)

For detailed information, refer to "Configuring Video Routing" under "How to Configure the Cisco uMG9850 QAM Module" in Configuring the Cisco uMG9850 QAM Module on Cisco.com at this URL:

New and Changed Information

This section describes new or changed information in Cisco IOS Release 12.2(20)EU1.

Digital Broadcast

Digital broadcast service provides the cable subscriber with a large selection of programs and a high-quality picture. The digital video content is typically received from a satellite broadcasting to a receiver at the headend, from where it is delivered in real time to all subscribers in the cable system. A statistical multiplexer is often used in the headend to combine broadcast programs from multiple sources and generate a multiple program transport stream (MPTS) for delivery to the STBs. Program data is also sent to the STB client application, to enable the cable subscriber to browse and select a broadcast program for viewing.

The Cisco uMG9850 supports the following key features for delivering digital broadcast services:

This feature enables the Cisco uMG9850 to receive video streams via IP multicast.

Each digital broadcast program is typically delivered to all STBs in a cable system. Multiple QAM channels are allocated for digital broadcast programs, and each QAM channel is electrically split for delivery to each service group. In order to use the IP network most efficiently, digital broadcast programs are multicast by the statistical multiplexer (or other video source) to the Cisco uMG9850. The Cisco uMG9850 uses the multicast group address, and source address of each multicast session to route each incoming program to the correct QAM channels. The relationship between the multicast group address and QAM channel is predetermined by user commands on the Cisco uMG9850 Module.

This feature causes an MPTS session to be passed through to the selected QAM channel.

Digital broadcast services are typically delivered in an MPTS from a statistical multiplexer (or other video source) to the Cisco uMG9850. The Cisco uMG9850 passes the MPTS through to the STBs without multiplexing the video streams. The Cisco uMG9850 may update the PCR or TSID information in the MPTS as necessary to output a valid transport stream. The Cisco uMG9850 outputs the MPTS on one or more QAM channels based on the UDP port map (for unicast sessions) or multicast group address (for multicast sessions) of the incoming stream.

This feature provides a way to clone (map) a video stream to several or all QAM channels on a Cisco uMG9850. Cloning is useful for digital broadcast services when the QAM channels are not electrically split for delivery to all service groups.

Multicast streams can be cloned to QAM channels on multiple Cisco uMG9850s, while unicast streams can be cloned to QAM channels on a single Cisco uMG9850.

Video Routing on VLAN Interfaces

With this release, each Cisco uMG9850 module no longer functions as an IP host. The supervisor engine in the Cisco Catalyst 4500 series switch plays that role, allowing for the aggregation of video traffic. This requires fewer IP addresses and simplifies IP network designs.

The video slot route command sets up the routing of UDP/IP (video) packets to the Cisco uMG9850. Acting as the IP host, the supervisor engine generally receives video traffic on the IP address configured on a VLAN. When the IP address of the selected VLAN is configured as the destination IP address of the video packets, any video packet destined to this IP address—and whose destination port matches the UDP range specified for video by this command—is routed to the selected Cisco uMG9850.

New MIBs

Limitations and Restrictions

This section lists limitations or restrictions of the functionality of this release.

Interleaver Settings and MPEG Analyzers

The default interleaver setting (128,4) may not work with some MPEG analyzers, such as the Tektronix MTM400 MPEG Transport Stream Monitor. Other interleaver settings should be used.

Caveats

Caveats describe unexpected behavior in Cisco IOS Release 12.2(20)EU1 specific to the Cisco uMG9850 QAM Module. Workarounds are provided where available.

Open Caveats—Release 12.2(20)EU1

Simultaneous changes to both PAT and PMT data in unicast session causes an "Invalid PSI" error message to display.

Resolved Caveats—Release 12.2(20)EU1

NetFlow Feature Acceleration has been deprecated and removed from Cisco IOS. The global command ip flow-cache feature-accelerate will no longer be recognized in any IOS configuration.

If your router configuration does not currently contain the command ip flow-cache feature-accelerate, this change does not affect you.

The removal of NetFlow Feature Acceleration does not affect any other aspects of Netflow operation, for example, access list processing. The features are separate and distinct.

Cisco Express Forwarding (CEF) supersedes the deprecated NetFlow Feature Acceleration.

Additionally, the following MIB objects and OIDs have been deprecated and removed from the NetFlow MIB (CISCO-NETFLOW-MIB):

The MIB values for dvnOutQamPmtInterval and cvnOutPatInterval are incorrect. If the PSI interval is set at the chassis level, then the QAM level should be set with the same value.

The wrong destination source address is displayed if the same UDP source and destination are entered from two different servers.

A document that describes how the Internet Control Message Protocol (ICMP) could be used to perform a number of Denial of Service (DoS) attacks against the Transmission Control Protocol (TCP) has been made publicly available. This document has been published through the Internet Engineering Task Force (IETF) Internet Draft process, and is entitled "ICMP Attacks Against TCP" (draft-gont-tcpm-icmp-attacks-03.txt).

These attacks, which only affect sessions terminating or originating on a device itself, can be of three types:

1. Attacks that use ICMP "hard" error messages
2. Attacks that use ICMP "fragmentation needed and Don't Fragment (DF) bit set" messages, also known as Path Maximum Transmission Unit Discovery (PMTUD) attacks
3. Attacks that use ICMP "source quench" messages

Successful attacks may cause connection resets or reduction of throughput in existing connections, depending on the attack type.

Multiple Cisco products are affected by the attacks described in this Internet draft.

Cisco has made free software available to address these vulnerabilities. In some cases there are workarounds available to mitigate the effects of the vulnerability.

The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple vendors whose products are potentially affected. Its posting can be found at: http://www.niscc.gov.uk/niscc/docs/re-20050412-00303.pdf?lang=en.

These attacks, which only affect sessions terminating or originating on a device itself, can be of three types:

Successful attacks may cause connection resets or reduction of throughput in existing connections, depending on the attack type.

Multiple Cisco products are affected by the attacks described in this Internet draft.

Cisco has made free software available to address these vulnerabilities. In some cases there are workarounds available to mitigate the effects of the vulnerability.

Related Documentation

Platform-Specific Documents

For a list of documents for the Cisco Catalyst 4500 series switch, refer to the Release Notes for the Catalyst 4500 Switch, Cisco IOS Release 12.2(20)EWA on Cisco.com at this URL:

Hardware Documents

For instructions for installing the Cisco uMG9850 QAM Module in a Cisco Catalyst 4500 series switch, refer to Quick Start Guide—Installing the Cisco uMG9850 QAM Module on Cisco.com at this URL:

Software Documents

For configuration information specific to the Cisco uMG9850 QAM Module, refer to Configuring the Cisco uMG9850 QAM Module on Cisco.com at this URL:

Cisco IOS Software Documentation Set

For a list of Cisco IOS software documents, refer to Release Notes for the Catalyst 4500 Switch, Cisco IOS Release 12.2(20)EWA on Cisco.com at this URL:

Obtaining Documentation

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Obtaining Technical Assistance

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Note Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting a web or phone request for service. You can access the CPI tool from the Cisco Technical Support Website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID or model name; by tree view; or for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.

Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:

For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

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Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.

Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

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Table Of Contents

Release Notes for Cisco uMG9850 QAM Module, Cisco IOS Release 12.2(20)EU1