Cisco uBR10012 Router Release Notes for Cisco IOS Release 12.2(33)SCE

Memory Requirements

This section describes the memory requirements for Cisco IOS Release 12.2(33)SCE.

NoteEffective with Cisco IOS Release 12.2(33)SCC, the image size is greater than 65 MB and requires TFTP servers capable of downloading large images.

Table 1-1 displays the memory recommendations for the Cisco uBR10012 universal broadband router with Cisco IOS Release 12.2(33)SCE feature sets.

Hardware Supported

The following sections list the hardware supported on various Cisco IOS Releases:

• Cable Interface Line Cards Supported
• Microcode Software
• Other Hardware Supported

Cable Interface Line Cards Supported

Table 1-2 provides information about the cable interface line cards supported in Cisco IOS Release 12.2(33)SCE.

OIR of Cable Interface Line Cards on the Cisco uBR10012 Universal Broadband Router

The Cisco uBR10012 series universal broadband routers support online insertion and removal (OIR) of cable interface line cards only when exchanging cable interface line cards of the same type.

NoteEffective with Cisco IOS Release 12.2(33)SCC, OIR compatibility between the Cisco uBR10-MC5X20 and the Cisco UBR-MC20X20V line cards is supported. The OIR compatibility procedure translates the configuration from one format to another during the OIR process.

Prerequisites for Performing OIR

• Save the line card configuration before starting the OIR.
• Perform OIR when the CMTS is up and running.
• Change the standby card (if available) to HOT state.
• Save the startup configuration file before any reload of the system (if there is a need to reload), after a successful OIR.

Restrictions During OIR Process

NoteThe Cisco uBR-MC3GX60V line card does not support OIR compatibility. To upgrade to the Cisco uBR-MC3GX60V line card from the Cisco uBR10-MC5X20H or Cisco UBR-MC20X20V line cards, you must remove the existing configuration of the line card using theno card command and create a new configuration for the Cisco uBR-MC3GX60V line card.

• OIR upgrade cannot be performed when the standby PRE is being loaded.
• OIR downgrade from the Cisco UBR-MC20X20V line card to the Cisco uBR10-MC5X20 line card may fail in certain scenarios when the frequency and RF power settings on the Cisco UBR-MC20X20V line card are incompatible with the Cisco uBR10-MC5X20 card.

Performing an OIR of a Cable Interface Line Card

Step 1 In global configuration mode, enter the cr10k card oir-compatibility command for the cable interface line card to perform an OIR, as shown in the following example:

This command helps preserve the configuration and performs some internal synchronization to make sure that the OIR runs successfully.

Note Effective with Cisco IOS Release 12.2(33)SCC, OIR compatibility is automatically ON for all slots of the line cards.

Step 2 Save the configuration to ensure the transition, as shown in the following example:

Step 3 Turn the power off to the line card using the cable power off command for the slot that is being replaced, as shown in the following example:

This powers off the line card gracefully.

Step 4 Before removing the card, verify that the proper grounding instructions have been followed for the card.

For more information about preventing electrostatic discharge (ESD) damage, see:

http://www.cisco.com/warp/public/109/cable-linecard-handling.pdf

Step 5 Remove the line card.

Step 6 Replace it with the new line card in the slot.

Step 7 Enter the cable power on command to power up the line card, as shown in the following example:

Step 8 Enter the show interface cable command and verify that the card and line protocol is “up” as shown in the following example:

Step 9 Enter the show controllers cable command and verify the hardware status, as shown in the following example:

Note To verify the hardware status of the Cisco UBRMC20X20V cable line cards, it is recommended that you run the show controller integrated-cable 8/0/0 brief command instead of the show controllers cable command.

Step 10 Verify the configuration with the show running-configuration command.

Cisco uBR10012 Universal Broadband Router Line Cards Supported

The Cisco uBR10012 universal broadband router supports up to four network line cards with any combination of the following cards:

• Cisco Half-Height Gigabit Ethernet (HHGE) line card
• Cisco uBR10012 OC-48 DPT/POS interface module

NoteCisco HHGE line card is supported only with PRE2.

Other Hardware Supported

Table 1-3 provides information about other hardware supported in Cisco IOS Release 12.2SC.

Verifying the Software Version

To determine the version of the Cisco IOS software running on your Cisco universal broadband router, log in to the router and enter the show version EXEC command:

Upgrading to a New Software Release

For information about selecting a new Cisco IOS software release, see "How to Choose a Cisco IOS Software Release" at the following location:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/
products_tech_note09186a00800fb9d9.shtml

For information about upgrading the Cisco universal broadband routers, see the Software Installation and Upgrade Procedures document at the following location:

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080094c07.shtml

For Cisco IOS upgrade ordering instructions, see:

http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm

To choose a new Cisco IOS software release based on information about defects that affect that software, use Bug Toolkit at the following URL:

http://tools.cisco.com/Support/BugToolKit/action.do?hdnAction=searchBugs

Upgrading from Cisco IOS Release 12.2(33)SCB to Cisco IOS Release 12.2(33)SCE

The following upgrade issues are observed while upgrading from Cisco IOS Release 12.2(33)SCB or its rebuilds to Cisco IOS Release 12.2(33)SCE on a Cisco uBR10012 router:

• Some commands related to route maps and cable interfaces may not appear in the right order in the configuration output after the upgrade.
• The IPv6 CEF commands, which are not displayed in the standard configuration output of Cisco IOS Release 12.2(33)SCB, are visible after upgrading to Cisco IOS Release 12.2(33)SCE.
• Fiber nodes are shown as “invalid” after the upgrade, if no downstream channels are configured in those fiber nodes. The same fiber nodes were shown as “valid” before the upgrade.
• Gigabit Ethernet interfaces on the Cisco Wideband SPA appear in the configuration output after the upgrade. These interfaces did not appear in the configuration output of Cisco IOS Release 12.2(33)SCB.
• Wideband and modular cable interfaces swap order in the configuration output after the upgrade. In Cisco IOS Release 12.2(33)SCB, modular cable interfaces appear first followed by the wideband interfaces.
• If upgrading from Cisco IOS Release 12.2(33)SCB4 or earlier, ensure that you have the correct field-programmable device (FPD) image to support Cisco Wideband SPA upgrade.
• You need to configure remote Downstream External PHY Interface (DEPI) after the upgrade is complete, if remote DEPI needs to be implemented.
• You need to preprovision the line card slots before inserting Cisco UBR-MC20X20V and Cisco uBR-MC3GX60V cable interface line cards in the available slots on the Cisco CMTS router after the upgrade is complete.

Upgrading from Cisco IOS Release 12.2(33)SCC to Cisco IOS Release 12.2(33)SCE

• When you upgrade to from Cisco IOS Release 12.2(33)SCC to Cisco IOS Release 12.2(33)SCE, the MAC address of all existing interfaces, except the PRE Fast Ethernet interface, are changed. This upgrade affects you if you are using access control lists (ACLs) or have implemented other network management policies that rely on an interface MAC address.

Microcode Software

This section describes microcode software that is supported for the Cisco uBR10012 router.

SPA FPD Image Packages for the Cisco uBR10012

The field-programmable device (FPD) image packages are used to update the shared port adapter (SPA) FPD images. If a discrepancy exists between a SPA FPD image and the Cisco IOS image that is running on the router, the SPA is deactivated until this discrepancy is resolved.

NoteThe maximum time to upgrade the FPD image on one SPA is 2 minutes. The total FPD upgrade time depends on the number of SPAs.

NoteThe FPD image package that is used to upgrade SPAs on a router that runs Cisco IOS Release 12.2(33)SCE is the ubr10k-fpd-pkg.122-33.SCE pkg file.

Upgrading from PRE2 to PRE4 Processors

A cold start of the router is required for an upgrade to a PRE4 from a PRE2 on a Cisco uBR10012 universal broadband router from a different release train, such as Cisco IOS Release 12.3(23)BC or other BC releases.

For more information, see Cisco uBR10012 Universal Broadband Router Performance Routing Engine Module at:

http://www.cisco.com/en/US/docs/interfaces_modules/cable/performance_routing_engine/installation/guide/pre5096.html

Upgrading from Cisco IOS Release 12.3BC or Earlier Cisco IOS Software Release

For more information, see the Cisco uBR10012 Router Release Notes for Cisco IOS Release 12.2(33)SCA at the following URL:

http://www.cisco.com/en/US/products/hw/cable/ps2209/prod_release_notes_list.html

Feature Support

Cisco IOS software is packaged in feature sets that consist of software images that support specific platforms. The feature sets available for a specific platform depend on which Cisco IOS software images are included in a release. Each feature set contains a specific set of Cisco IOS features.

Cisco CMTS User Documentation References for Cisco IOS Release 12.2SC

Table 1-5 provides information about the important user guides in Cisco IOS Release 12.2SC.

Table 1-5 Important Guides in Cisco IOS Release 12.2SC

Cisco Feature Navigator

The Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or by feature set (software image). Under the release section, you can compare Cisco IOS software releases side-by-side to display both the features unique to each software release and the features that the releases have in common.

To access the Cisco Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check verifies that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password is e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:

https://tools.cisco.com/RPF/register/register.do

The Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:

http://www.cisco.com/go/fn

For frequently asked questions about the Cisco Feature Navigator, see the FAQs at the following URL:

http://www.cisco.com/support/FeatureNav/FNFAQ.html

Determining Which Software Images Support a Specific Feature

To identify the software images (feature sets) in Cisco IOS Release 12.2(33)SC that support a specific feature:

Step 1 Go to the Cisco Feature Navigator home page. Enter your Cisco.com login.

Step 2 Click Search by Feature .

Step 3 To find a feature, use either Filter by full or partial feature name or search for available features in alphabetical order. Either a list of features that match the search criteria or a list of features that begin with the number or letter selected from the ordered list is displayed in the text box.

Step 4 Select a feature from the Available Features pane, and click Add to add a feature to the Selected Features pane.

Note To learn more about a feature in the list, click Show Descriptions.

Repeat this step to add additional features. A maximum of 20 features can be chosen for a single search.

Step 5 Click Continue when you are finished selecting features.

Step 6 From the Major Release drop-down menu, choose 12.2SC .

Step 7 From the Release drop-down menu, choose the appropriate maintenance release.

Step 8 From the Platform Family drop-down menu, select the appropriate hardware platform. The Search Results table lists all the software images (feature sets) that support the selected feature.

Determining Which Features Are Supported in a Specific Software Image

To determine the features supported in a specific software image (feature set) in Cisco IOS Release 12.2(33)SC:

Step 1 Go to the Cisco Feature Navigator home page. Enter your Cisco.com login.

Step 2 Click Compare Images .

Step 3 From the Software drop-down menu in the Select First Image Parameters pane, choose IOS .

Step 4 From the Major Release drop-down menu, choose 12.2SC .

Step 5 From the Release Number drop-down menu, choose the appropriate maintenance release.

Step 6 From the Platform Family drop-down menu, choose the appropriate hardware platform.

Step 7 From the Feature Set drop-down menu, choose the appropriate feature set. The Search Results table lists all the features that are supported by the selected feature set (software image).

New Hardware Features in Cisco IOS Release 12.2(33)SCE6

There are no new hardware features in Cisco IOS Release 12.2(33)SCE6.

New Hardware Features in Cisco IOS Release 12.2(33)SCE5

There are no new hardware features in Cisco IOS Release 12.2(33)SCE5.

New Hardware Features in Cisco IOS Release 12.2(33)SCE4

There are no new hardware features in Cisco IOS Release 12.2(33)SCE4.

New Hardware Features in Cisco IOS Release 12.2(33)SCE3

There are no new hardware features in Cisco IOS Release 12.2(33)SCE3.

Features Integrated into Cisco IOS Release 12.2(33)SCE3

The following features introduced in an earlier Cisco IOS Release are now supported in Cisco IOS Release12.2(33)SCE3:

New Fan Assembly Module

A new fan Assembly Module (UBR10012-FAN-PLUS=) is introduced on the Cisco uBR10012 router. This fan assembly has nine internal fans that draw cooling air into the front of the chassis and directs it across the internal components. This fan assembly module provides:

• Increased cooling capability
• Higher redundancy in case of a failure
• Repositioned thermal sensor that detects the ambient temperature of the facility and adjusts the variable fan speeds
• PRODUCT ID LED /switch that helps the Cisco IOS software to identify the fan assembly as UBR10012-FAN-PLUS=

NoteThe PRODUCT ID LED /switch feature is supported starting Cisco IOS Release 12.2(33)SCC7 and later.

For more information, see

Cisco uBR10012 Universal Broadband Router Fan Assembly Module .

New 3300 W AC Power Entry Module (AC PEM)

A new 3300 W AC PEM module (UBR10-PWR-AC-PLUS=) is introduced on the Cisco uBR10012 router which provides a power output of 3300 W with dual AC-input power connections. This AC PEM module provides:

• Increased power to the chassis
• Load shared power to the chassis (under normal conditions)
• RODUCT ID LED/switch that helps the Cisco IOS software to identify the AC PEM module as UBR10-PWR-AC-PLUS=.

NoteThe PRODUCT ID LED /switch feature is supported starting Cisco IOS Release 12.2(33)SCC7 and later.

For more information, see 3300 W AC PEM Module for Cisco UBR10012 Broadband Router Chassis .

New 3300 W DC Power Entry Module (DC PEM)

A new 3300 W DC PEM module (UBR10-PWR-DC-PLUS=) is introduced on the Cisco uBR10012 router which provides a power output of 3300 W with dual DC-input power connections. This DC PEM module provides:

• Increased power to the chassis
• Load shared power to the chassis (under normal conditions)
• PRODUCT ID LED/switch that helps the Cisco IOS software to identify the DC PEM module as UBR10-PWR-DC-PLUS

NoteThe PRODUCT ID LED /switch feature is supported starting Cisco IOS Release 12.2(33)SCC7 and later.

For more information, see 3300 W DC PEM Module for Cisco UBR10012 Broadband Router Chassis.

New Hardware Features in Cisco IOS Release 12.2(33)SCE2

There are no new hardware features in Cisco IOS Release 12.2(33)SCE2.

New Hardware Features in Cisco IOS Release 12.2(33)SCE1

There are no new hardware features in Cisco IOS Release 12.2(33)SCE1.

New Hardware Features in Cisco IOS Release 12.2(33)SCE

This section describes the hardware features supported in Cisco IOS 12.2(33)SCE.

Cisco uBR-MC3GX60V Cable Interface Line Card

The Cisco uBR-MC3GX60V cable interface line card is a DOCSIS 3.0 compliant line card designed for the Cisco uBR10012 universal broadband router. This line card conforms to the Modular CMTS (M- CMTS) architecture and has the capacity to support up to 72 downstream (DS) and 60 upstream (US) channels.

The Cisco uBR-MC3GX60V cable interface line card has 20 US spigots for RF connectivity, which are organized into 5 groups of 4 connectors each. Each connector group supports up to 12 frequency-stacked US channels, with a default configuration of 3 US channels per RF connector.

The Cisco uBR-MC3GX60V cable interface line card has six Gigabit Ethernet (GE) interface ports organized into three pairs for DS connectivity. Each pair supports 1+1 redundancy and supports 24 DS channels in Annex B mode by default. The GE interfaces connect to an external Edge Quadrature Amplitude Modulation (EQAM) device either directly or over a Converged Interconnect Network (CIN) and provide M-CMTS compliant Downstream External PHY Interface (DEPI) data.

Another unique feature of the Cisco uBR-MC3GX60V cable interface line card is the use of a front panel display (FPD) to show the licensing status information of the US and DS channels.

The following commands are new or modified in Cisco IOS Release 12.2(33)SCE.

• cable bonding-group-secondary
• cable freq-range
• cable upstream connector
• cable upstream max-ports
• card
• downstream modular-cable rf-channel (interface)
• interface modular-cable
• interface wideband-cable
• show controller gigabitethernet
• show controller integrated-cable
• show controller modular-cable
• show interface cable
• show interface gigabitethernet

For more information about this feature, see the following documents:

• Cisco uBR-MC3GX60V Cable Interface Line Card Hardware Installation Guide
• Configuring the Cisco uBR-MC3GX60V Cable Interface Line Card

New Software Features in Cisco IOS Release 12.2(33)SCE6

There are no new software features in Cisco IOS Release 12.2(33)SCE6.

Features Integrated into Cisco IOS Release 12.2(33)SCE6

The following feature introduced in an earlier Cisco IOS Release is now supported in Cisco IOS Release12.2(33)SCE6:

Moving CMs Configured with IGMP and RSVP (test cable dcc force Command)

In earlier releases, the test cable dcc command did not support transaction for dynamic channel change (DCC) when the cable modem was configured with IGMP and RSVP. Starting with Cisco IOS Release 12.2(33)SCE6, the force keyword allows users to manually move cable modems configured with IGMP and RSVP, when the DCC init-tech is set to 0.

For more information about this command, see the Cisco IOS CMTS Cable Command Reference guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html

Modified Software Features in Cisco IOS Release 12.2(33)SCE6

There are no modified software features in Cisco IOS Release 12.2(33)SCE6.

New Software Features in Cisco IOS Release 12.2(33)SCE5

Configurable DHCPv6 Relay Address

Cisco IOS Release 12.2(33)SCE5 introduces the Configurable DHCPv6 Relay Address feature on the Cisco CMTS routers. A DHCPv6 relay agent is used to send relay-forward messages from a source address to all configured relay destinations. The source address is either an IPv6 address provisioned on the network interface or a CMTS WAN IPv6 address. The relay destination can be a unicast address of a server, another relay agent, or a multicast address.

The ipv6 dhcp relay destination command was modified to support this feature.

For detailed information about this feature, see the IPv6 on Cable feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_ipv6.html

PRE High Availability Enhancement

In Cisco IOS Release 12.2(33)SCE5, the PRE high availability is enhanced to address the PRE switchover issue in which both the PRE modules behave as the primary PRE modules. The line card uses a link loop mechanism when both the PRE modules behave as primary PRE modules. In this mechanism, the line card checks the packet sent from the active PRE module, and automatically does a switchover to the real active PRE. The link loop mechanism automatically connects to the new PRE module based on the MAC address, thus increasing robustness. This mechanism occurs before the IPC keepalive timeout mechanism occurs between the route processor and the line card.

The PRE high availability enhancement applies to both Stateful Switchover (SSO) and Route Processor Redundancy (RPR) modes on the Cisco uBR10012 router.

For detailed information on configuring Route Processor Redundancy, see Route Processor Redundancy for the Cisco uBR10012 Universal Broadband Router document at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr10012_rtpro_red.html.

For detailed information on configuring Stateful Switchover (SSO), see Stateful Switchover document at:

http://www.cisco.com/en/US/docs/ios/12_2s/feature/guide/fssso20s.html.

Modified Software Features in Cisco IOS Release 12.2(33)SCE5

There are no modified software features in Cisco IOS Release 12.2(33)SCE5.

New Software Features in Cisco IOS Release 12.2(33)SCE4

MDF1 Support for DOCSIS 2.0 Hybrid Cable Modems

From Cisco IOS Release 12.2(33)SCE4 onwards, the MDF capability is enabled by default on DOCSIS 2.0 hybrid cable modems to allow IPv6 packet forwarding. The cable multicast mdf-disable command was modified by adding the keyword wb-incapable-cm . This new keyword allows the cable multicast mdf-disable command to disable MDF on a wideband incapable cable modem.

For more information about this feature, see the DOCSIS 3.0 Multicast Support on the CMTS Routers feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_d30_mcast_support.html

Move Secondary Service Flows to the Primary Channel Interface

This feature enables the Cisco CMTS router to move all unicast secondary service flows (of a cable modem) to the primary channel interface (modular or cable), when a downstream channel impairment is reported by a cable modem via a CM-STATUS message. Only those unicast secondary service flows, which share the same wideband interface as the primary service flow, are moved to the primary channel interface.

The c able rf-change-trigger c ommand was modified to support this feature.

For more information about this feature, see the Wideband Modem Resiliency feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_wm_resiliency.html

Support for 256 Legacy LBGs

To support effective configuration of legacy LBGs on the Cisco uBR-MC3GX60V line card, the valid range for the legacy load balance group is changed in Cisco IOS Release 12.2(33)SCE4. In Cisco IOS Release 12.2(33)SCE3 and earlier, the valid range is from 1 to 80. In Cisco IOS Release 12.2(33)SCE4 and later, the valid range is from 1 to 256.

The following commands are new or modified:

• cable load-balance group
• cable load-balance group (interface)
• cable load-balance group interval
• cable load-balance group policy ugs
• cable load-balance group threshold
• cable upstream load-balance group
• show cable load-balance

For more information about this feature, see the Load Balancing and Dynamic Channel Change on the Cisco CMTS Routers feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_load-bal_dcc.html

Features Integrated into Cisco IOS Release 12.2(33)SCE4

The JIB3 Upstream Partial Reset feature introduced in an earlier Cisco IOS Release is now supported in Cisco IOS Release12.2(33)SCE4.

JIB3 Upstream Partial Reset

The fatal interrupts received from the hardware components on the cable line cards result in reset and reload of the line cards, which triggers switchover and partial system downtime. The JIB3 Upstream Partial Reset feature significantly reduces this recovery time.

The cable line cards that use this feature include:

• Cisco UBR-MC20X20V
• Cisco uBR-MC3GX60V
• Cisco uBR-MC88V

The show controllers cable jib command was introduced to support this feature.

For more information about this command, see the Cisco IOS CMTS Cable Command Reference at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_17_show_ch_to_show_cr.html

Modified Software Features in Cisco IOS Release 12.2(33)SCE4

There are no modified software features in Cisco IOS Release 12.2(33)SCE4.

New Software Features in Cisco IOS Release 12.2(33)SCE3

Extended Transmit Power

The Extended Transmit Power feature enables cable operators to have better control on the cable modems that register in 4-channel or 2-channel MTC mode or in non-MTC mode to transmit at a higher power level than the DOCSIS-defined maximum power level. This feature is supported only with Cisco DPC3000 cable modems.

The following commands are new or modified:

• cable tx-power-headroom
• cable upstream max-channel-power-offset

For more information about this feature, see the Upstream Channel Bonding feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_uscb.html

IPv6 Access Services: DHCPv6 Prefix Delegation

The DHCP for IPv6 prefix delegation feature can be used to manage link, subnet, and site addressing changes. DHCP for IPv6 can be used in environments to deliver stateful and stateless information.

The following section of the “ Implementing DHCP for IPv6 ” chapter of the Cisco IOS IPv6 Configuration Library provides information about this feature:

• DHCPv6 Prefix Delegation

For more details on this feature, see the Feature Information table in IPv6 on Cable guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_ipv6.html

Features Integrated into Cisco IOS Release 12.2(33)SCE3

The Configurable DFO Retry Count feature introduced in an earlier Cisco IOS Release is now supported in Cisco IOS Release12.2(33)SCE3:

The Downstream Frequency Override (DFO) feature enables cable modems to register on a specific primary RF channel. Because of RF failure conditions and some cable modem types, the cable modem takes more time to register on a specific primary RF channel. In Cisco IOS Release 12.2(33)SCD7, the cable dfo-retry-count , a global configuration command, is introduced to enable you to configure the DFO retry count to reduce the cable modem registration time.

For more information about this command, see the Cisco IOS CMTS Cable Command Reference at: http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_03_cable_d.html

New Software Features in Cisco IOS Release 12.2(33)SCE2

There are no new software features in Cisco IOS Release 12.2(33)SCE2.

New Software Features in Cisco IOS Release 12.2(33)SCE1

This section lists the new features in Cisco IOS Release 12.2(33)SCE1.

RFC4388 Compliance DHCP Lease Query

In addition to Cisco standard compliant DHCP LEASEQUERY, Cisco CMTS now also supports RFC 4388 standard compliant DHCP LEASEQUERY. These two standards differ mostly in the identifiers used to query or respond to the DHCP Server. You can choose between these two implementations depending on which standard is supported on your DHCP Server.

The ip dhcp compatibility lease-query client command is modified.

For more information about this feature, see Filtering Cable DHCP Lease Queries on Cisco CMTS Routers guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_flt_dhcp_lsqr_ps2209_TSD_Products_Configuration_Guide_Chapter.html

Modified Software Features in Cisco IOS Release 12.2(33)SCE1

This section lists the modified software features in Cisco IOS Release 12.2(33)SCE1.

N+1 Redundancy

Beginning with Cisco IOS Release 12.2(33)SCE1, the N+1 redundancy feature including DEPI redundancy is supported on the Cisco uBR-MC3GX60V cable interface line card.

For more information about N+1 DEPI redundancy and DEPI EQAM statistics, see the M-CMTS DEPI Control Plane feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/m-cmts_depi_control_plane.html

New Software Features in Cisco IOS Release 12.2(33)SCE

This section lists the new features in Cisco IOS Release 12.2(33)SCE.

Automatic Downstream Channel ID Assignment

The DOCSIS downstream channel ID (DCID) is an 8-bit identifier that distinguishes a downstream channel within a MAC Domain. All CMTS downstream channels are assigned a DCID by default that can be subsequently changed by configuration. DCIDs are used in most DOCSIS downstream packet headers and have valid values ranging from 1 to 255 (0 is reserved for network management purposes).

Starting with Cisco IOS Release 12.2(33)SCE, it is possible to automatically determine a unique set of DCIDs to meet all DOCSIS requirements. However, DCIDs are assigned automatically only at the fiber node, therefore, only those deployments that use fiber node configuration can use Automatic DCID assignment.

The following commands are new or modified:

• cable downstream-channel-id automatic

For more information, see the Downstream Channel ID Assignment on the Cisco CMTS Routers feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_dwnstrm_chnl_id.html

Extending Software License Activation on Cisco uBR-MC3GX60V Cable Interface Line Cards

The Software License Activation feature is extended to support software licensing for Cisco uBR-MC3GX60V line cards. These licenses are defined based on the availability of different upstream and downstream ports on the line card. The feature update also provides information about the license types, license transfers between two working devices, RMA license transfer, license upgrades, license upgrades when the line card is in LCHA, and troubleshooting information. Starting with Cisco IOS Release 12.2(33)SCE, you can view license information as applied to the RF channels on the CMTS chassis using the new show cable licenses all command.

The licenses for the Cisco uBR-MC3GX60V cable interface line card are:

• SWLIC-MC3GX60V-US
• SWLIC-MC3GX60V-DS

The following command was introduced:

• show cable licenses all

For detailed information about this feature and the command, see the Software Activation on Cisco CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/cable/cmts/license/cmts_swact.html

N+1 DEPI Redundancy and DEPI EQAM Statistics

NoteThe N+1 Redundancy feature including DEPI redundancy is not supported on the Cisco uBR-MC3GX60V cable interface line card in Cisco IOS Release 12.2(33)SCE.

The N+1 Downstream External PHY Interface (DEPI) redundancy feature enables the M-CMTS router to protect the downstream data path in the event of the Cisco uBR-MC3GX60V line card failure or switchover, using a secondary DEPI session configured on the protect line card. The protect line card has a fully operational secondary DEPI control connection and DEPI sessions for the quadrature amplitude modulation (QAM) channels on the working line card. The primary DEPI control connection and sessions are configured on the Gigabit Ethernet ports of the working line card.

The DEPI Edge Quadrature Amplitude Modulation (EQAM) statistics feature enables the Cisco RF Gateway 10 to send QAM channel statistics to the M-CMTS router for all data sessions in every DEPI tunnel. The DEPI EQAM statistics feature is configured by default on the M-CMTS router.

The following commands are new or modified:

• depi eqam-stats
• protect-tunnel
• show depi session
• show depi tunnel

For more information about N+1 DEPI redundancy and DEPI EQAM statistics, see the M-CMTS DEPI Control Plane feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/m-cmts_depi_control_plane.html

PacketCable Multimedia Changes for VDOC and Multicast Support

The PacketCable Multimedia (PCMM) feature was enhanced to provide support for IPv6 addresses and PCMM multicast transmission in Cisco IOS Release 12.2(33)SCE and later releases. Starting with Cisco IOS Release 12.2(33)SCE, the subscriber ID can identify both IPv4 and IPv6 addresses of either the cable modem or the customer premises equipment (CPE).

Starting with Cisco IOS Release 12.2(33)SCE, you can configure a PCMM multicast session range using IPv4 IP addresses and a mask for a PCMM multicast group. The PCMM multicast session range enables the Cisco CMTS router to accept Gate-Set messages from the PCMM policy server. If a PCMM multicast session range is configured, the Cisco CMTS router does not allow you to create multicast sessions using other sources such as the Internet Group Management Protocol (IGMP) and DOCSIS Set-Top Gateway (DSG).

The following commands are new or modified:

• cable multicast source pcmm
• debug cable multicast counter clear
• debug cable multicast counter start
• debug cable multicast counter stop
• debug cable multicast forwarding
• debug cable multicast latency
• show cable multicast db
• show cable multicast debug
• show cable multicast qos
• show packetcable event
• show packetcable gate
• show packetcable gate ipv6
• show packetcable gate multimedia

For more information about PCMM enhancements, see the PacketCable and PacketCable Multimedia for the Cisco CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_pktcable_mm.html

PXF Accelerated for IPv6 Forwarding

The parallel express forwarding (PXF) Accelerated for IPv6 Forwarding feature for the Cisco uBR10000 series routers include support for the following IPv6 features:

• IPv6 Security and QoS ACLs
• IPv6 over IPv4 Tunnels
• IPv6 Packet Filter Groups
• IPv6 QoS Classifiers
• ToS Overwrite for IPv6
• IPv6 Source Verify
• IPv6 Packet Intercept
• IPv6 Source Address Verification (SAV)

PxF Accelerated for IPv6 Forwarding feature applies to both cable and WAN interfaces and is an extension to the PXF Divert Rate Limit Enhancements feature.

The following commands are new or modified:

• service divert-rate-limit ipv6
• service divert-rate-limit trusted-site-ipv6
• show pxf cpu statistics drl ipv6
• show pxf cpu statistics drl ipv4
• show pxf cpu statistics drl non-ip
• show pxf cpu statistics drl us-cable

For more information about this feature, see the PXF Divert Rate Limit Enhancement on the Cisco CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_pxf_drl_limit_enhance.html

Smart Call Home Feature for the Cisco CMTS Routers

The Smart Call Home feature provides a mechanism to automatically create cases and update Cisco, a customer, or partner about events and changes on a Cisco device in a customer network. This feature provides e-mail and web-based notification of critical system events. Multiple message formats are available for optimum compatibility with pager services, e-mail, or XML-based automated parsing applications. Common uses of this feature include paging a network support engineer, sending an e-mail notification to a Network Operations Center, XML-based message delivery to a support website, and generating a direct case with the Cisco Systems Technical Assistance Center (TAC).

For more information, see the Call Home Feature for the Cisco CMTS Routers feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_callhome.html

Upstream Bonding Support for Prisma D-PON on the Cisco CMTS Routers

Cisco IOS Release 12.2(33)SCE provides support for the DOCSIS Passive Optical Network (D-PON). This architecture, also known as RF over glass (RFoG), enables the cable operators to use the RF technologies in a hybrid fiber-coaxial (HFC) network.

The Prisma D-PON feature allows the CMTS to transmit RF signals over the optical network. The downstream data from the CMTS is combined with other RF signals and sent to the transmitter. The signal from the transmitter are sent to multiple PONs, and each PON serves 32 homes from a single fiber.

The upstream data from the Optical Network Terminal (ONT) is sent to the hub, which is routed to the optical receiver (RX). Each upstream optical receiver is dedicated to a PON that can have multiple DOCSIS upstream sources (multiple modems and DSG terminals). Upstream data from multiple optical receivers are combined and sent to the CMTS. The upstream data to the CMTS contains signals from multiple PONs.

For detailed information about this feature, see the Upstream Bonding Support for Prisma D-PON on the Cisco CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_rfog.html

Features Integrated into Cisco IOS Release 12.2(33)SCE

The following features introduced in earlier Cisco IOS Releases are now supported in Cisco IOS Release12.2(33)SCE:

CMTS Upstream Traffic Prioritization

With the CMTS Upstream Traffic Prioritization feature, you can now set the priority of the QoS profile-2 to a higher value. This higher priority ensures that the Cisco CMTS allows bandwidth request from an initializing cable modem to get precedence over those from online cable modems.

For more information, see the Configuring Upstream Cable Interface Features on the Cisco CMTS Routers document at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_upstrm_if.html

DOCSIS 3.0 OSS IPDR/SP

DOCSIS 3.0 certification is extended to IPDR/SP feature in Cisco CMTS routers. IPDR Streaming Protocol is designed to address the need for a reliable, fast, efficient, and flexible export process of high volume data records such as billing, performance and diagnostic data.

Using the ipdr type command, you can configure the IPDR session type. The IPDR session types that can be defined using this command are event type, time-interval type, and the ad hoc type.

For detailed information about this feature, see the IPDR Streaming Protocol on the Cisco CMTS Routers document at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ipdr_feature.html

SAMIS Inactive Service Flow and Channel Utilization Interval CLIs

A new keyword, full-records , has been added to the cable metering destination and cable metering filesystem commands to provide information about both, active and idle service flow records.

A new command, cable util-interval , has been introduced to configure the interval of the channel utilization. This command can be used for both, cable line cards and the SPA channel.

For more information, see the Usage-Based Billing for the Cisco CMTS Routers document at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_use-bsd_bill.html

Subscriber Traffic Management version 1.3

The Subscriber Traffic Management (STM) feature allows the service provider to configure a maximum bandwidth threshold over a fixed time period, for a specific service-class (or QoS-profile). The subscribers who exceed this configured threshold are identified and allocated with a reduced QoS. STM works as a low CPU alternative to Network-Based Application Recognition (NBAR) and access control lists (ACLs), however, using STM does not mean that NBAR and ACLs have to be turned off; STM can be applied along with NBAR and ACLs. STM also works in conjunction with the Cisco Broadband Troubleshooter to support additional network management and troubleshooting functions in the Cisco CMTS.

Following are the enhancements in STM Version 1.3:

• Support for configuring minute-level peak time: Peak time can now be configured in the hh:mm format, which enables a user to pinpoint the exact time at which monitoring should start.
• Support for configuring minute-level penalty end time: Penalty end time can now be configured in the hh:mm format, which enables a user to pinpoint the exact time at which monitoring should stop.
• Ability to configure a unique penalty duration for weekdays and weekends.
• Ability to specify whether the monitoring should be turned on after the cable modem is released from the penalty.

The following SNMP objects have been added to the CISCO-CABLE-QOS-MONITOR-MIB:

• ccqmCmtsEnfRuleFirstPeakTimeMin
• ccqmCmtsEnfRuleSecondPeakTimeMin
• ccqmCmtsEnfRuleWkndFirstPeakTimeMin
• ccqmCmtsEnfRuleWkndSecondPeakTimeMin
• ccqmCmtsEnfRulePenaltyEndTimeMin
• ccqmCmtsEnfRuleWkPenaltyPeriod
• ccqmCmtsEnfRuleWkndPenaltyPeriod
• ccqmCmtsEnfRuleRelTimeMonitorOn

The following commands are new or modified:

• duration
• peak-time1
• penalty-period
• show cable qos enforce-rule verbose
• weekend duration
• weekend peak-time1

For more information about this feature, see the Subscriber Traffic Management feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_sbsbr_tfmgt.html

Upstream Weighted Fair Queuing

The upstream weighted fair queuing (WFQ) is a quality of service (QoS) feature that enables the Cisco CMTS router to allocate optimum bandwidth to upstream service flows based on the WFQ parameter configurations. To enable upstream WFQ, you must configure either the class-based or activity-based WFQ on a cable interface.

The following commands are new or modified:

• cable upstream qos wfq
• show interface cable mac-scheduler

For more information about this feature, see the Upstream Channel Bonding feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_uscb_ps2209_TSD_Products_Configuration_Guide_Chapter.html

Dynamic Insertion of TFTP Server tlv for CM Firmware Upgrade

This feature describes how to upgrade firmware on cable modems by dynamically inserting the correct TLV values in the DOCSIS configuration file, which is downloaded by the cable modem. The cable dynamic-secret tftp insert-upgrade-server command was added to support dynamic insertion of the TFTP server address in the DOCSIS configuration file.

For detailed information about upgrading firmware on the cable modems, see the Configuring a Dynamic Shared Secret for the Cisco CMTS document at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_dyn_sh_sec.html

Power and Thermal Monitoring on the Cisco CMTS Routers

The power and thermal monitoring feature provides monitoring options for the thermal and power consumption of the Cisco UBR-MC20X20V cable interface line card. The power and thermal monitoring facility monitors the line card at several different points to see whether it is overheating or drawing too much power.

For more information on this feature, see Power and Thermal Monitoring on the Cisco CMTS Routers document at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_env_monitor.html

Multicast DSID Forwarding Disabled Mode

For any application that needs the cable modem to perform IGMP Snooping, the Multicast DSID-based Forwarding (MDF) on the cable modem must be disabled. Cable modems registered in MDF-enable mode by the Cisco CMTS do not perform IGMP Snooping because MDF forwarding is based on the DSID filtering.

In Cisco IOS Release 12.2(33)SCD3, the cable multicast mdf-disable command is introduced in the global configuration mode to disable the MDF capability on the cable modem.

For more information about this feature, see the DOCSIS 3.0 Multicast Support on the CMTS Routers feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_d30_mcast_support_ps2209_TSD_Products_Configuration_Guide_Chapter.html

DOCSIS 2.0 Multicast Enhancement for VDOC

This feature enables the customer to tune a DOCSIS 2.0 cable modem to a specific downstream and supports static multicast video forwarding on it.

The following commands are new or modified:

• cable load-balance rule

For more information about this feature, see the following guides:

Load Balancing and Dynamic Channel Change on the Cisco CMTS Routers at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_load-bal_dcc.html

Restricted/General Load Balancing and Narrowband Dynamic Bandwidth Sharing with Downstream Dynamic Load Balancing at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/UBR_RLBG_GLBG_support.html

Differential DHCP GIAddr Assignment

Starting with Cisco IOS Release 12.2(33)SCD5, a new giaddr option was added to the cable dhcp-giaddr policy mta command. This option changes the source IP address of the DHCP request so that the DHCP server can use different subnets to assign the right IP address depending on the types of CPE devices. This enables faster processing of IP addresses; and in case the IP address does not belong to the subnets on the DHCP server, there is minimal usage of CPU resources.

The following command was modified:

• cable dhcp-giaddr policy mta

For more information about this feature, see the DHCP, ToD, and TFTP Services for the CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_services.html

DOCSIS 3.0 BPI+ Policy Enforcement

The DOCSIS 3.0 BPI+ Policy Enforcement feature was introduced in Cisco IOS Release 12.2(33)SCD5 to prevent cable modem MAC address cloning and theft of service. This feature enables a Cisco CMTS router to validate each cable modem MAC address. To enforce BPI+, configure one of the following enforcement policies for each MAC domain on the router:

• 1.1 Style Configuration File Parameters and Capability (Policy 1)—The Cisco CMTS router enforces BPI+ on cable modems that register with a DOCSIS 1.1 configuration file with parameters indicating BPI+ is enabled with or without type, length, value (TLV) 29. The Privacy Support Modem Capability Modem TLV (type 5.6) in the configuration file must be set to BPI+ support.
• 1.1 Style Configuration File Parameters (Policy 2)—The Cisco CMTS router enforces BPI+ on cable modems that register with a DOCSIS 1.1 style configuration file with parameters indicating BPI+ is enabled with or without TLV 29.
• 1.1 Style Configuration File (Policy 3)—The Cisco CMTS router enforces BPI+ on cable modems that register with a DOCSIS 1.1 style configuration file. This means that if you provision a DOCSIS 1.1 configuration file with security disabled (privacy flag is not present in the configuration file), all DOCSIS 1.1 and 2.0 cable modems will be blocked. Only the DOCSIS 3.0 cable modems that have security enabled implicitly will pass this check if the privacy flag is not present in the configuration file.
• Total (Policy 4)—The Cisco CMTS router enforces BPI+ on all DOCSIS 1.0 and greater cable modems.

The following commands are new or modified:

• cable privacy bpi-plus-policy —This command replaced the cable privacy bpi-plus-enforce command in Cisco IOS Relase12.2(33)SCD5.
• cable privacy bpi-plus-exclude

For more information about this feature, see the Cable Duplicate MAC Address Reject for the Cisco CMTS Router feature guide at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_dup_macad_rj_ps2209_TSD_Products_Configuration_Guide_Chapter.html

DSG Rule/Classifier Enhancement

A new option ignore was added to the in-dcd keyword of the cable dsg cfr command in Cisco IOS Release 12.2(33)SCD5 to exclude DSG classifier information from the DCD message and enable the DSG rule regardless of the tunnel MAC address.

The following commands are new or modified:

• cable dsg cfr
• show cable dsg tg
• show interface cable dsg downstream tg

For more information about the DSG Rule/Classifier Enhancement, see the Advanced-Mode DOCSIS Set-Top Gateway 1.2 for the Cisco CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_docsis_gw12.html

IPv6 Support on Multiple Subinterfaces

Starting with Cisco IOS Release 12.2(33)SCB10, IPv6 commands are supported on multiple CMTS bundle subinterfaces.

For more details on this feature, refer to the IPv6 on Cable feature document at the following location:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_ipv6.html#wp1077229

Suppressing Downstream and Upstream Peak Rate TLVs for pre DOCSIS 3.0 Cable Modems

The DOCSIS 3.0 upstream (US) peak rate TLV 24.27 and downstream (DS) peak rate TLV 25.27 are enabled on the Cisco CMTS through the cable service class command or the CM configuration file. The DOCSIS 1.x and DOCSIS 2.0 CMs do not support these TLVs. Ideally, if a DOCSIS 1.x or DOCSIS 2.0 CM receives peak rate TLVs during registration, it should ignore these TLVs and proceed with the registration. However there are a few old non-compliant pre DOCSIS 3.0 CMs, which may fail to come online when peak-rate TLVs are received in the registration response from the Cisco CMTS. To overcome this, the Cisco CMTS has introduced this feature which allows you to suppress sending of DOCSIS 3.0 peak rate TLVs to the pre DOCSIS 3.0 CMs.

The following command was introduced:

• cable service attribute withhold-TLV

For more details on this feature, refer to the DOCSIS 1.1 for the Cisco CMTS Routers at the following location:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_docsis11.html

Upstream Minimum Reserved Traffic Rate Plus Excess Traffic Rate

Starting with Cisco IOS Release 12.2(33)SCD5, a service flow configured with the minimum reserved traffic rate, has a greater chance of receiving excess traffic rate bandwidth, if requested.

The following command was new:

• cable rate-limit-algorithm min-plus-excess

For more information about this feature, see the Configuring Upstream Cable Interface Features on the Cisco CMTS Routers feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_upstrm_if.html

Modified Software Features in Cisco IOS Release 12.2(33)SCE

The following software features were modified to support the Cisco uBR-MC3GX60V cable interface line on the Cisco uBR10012 universal broadband router in Cisco IOS Release 12.2(33)SCE.

Downstream Channel Bonding

For Cisco IOS Release 12.2(33)SCE, Cisco M-CMTS Downstream Solution was modified to support the Cisco uBR-MC3GX60V line card. In the Cisco M-CMTS implementation, the downstream channels are aggregated and encapsulated for the Gigabit Ethernet using the Downstream External PHY Interface (DEPI) protocol as defined by the DOCSIS M-CMTS. The downstream channels can be used either as primary-capable channels (narrowband channels), or as part of bonded channels (wideband channels), or both.

For more information on downstream channel bonding for the M-CMTS solution using Cisco uBR-MC3GX60 line card, see the Cisco DOCSIS 3.0 Downstream Solution Design and Implementation Guide feature guide at:

http://www.cisco.com/en/US/docs/cable/cmts/wideband/solution/guide/release_2.0/ds_solu.html

IPv6 High Availability

Cisco IOS Release 12.2(33)SCE supports the IPv6 High Availability (HA) feature. IPv6 HA is supported on PRE2 with IPv6 punt path forwarding and on PRE4 with IPv6 PXF forwarding.

The IPv6 HA feature support in Cisco CMTS routers covers the following capabilities:

• DOCSIS PRE HA
• DOCSIS line card HA
• Dynamic Channel Change (DCC)

For more information about this feature, see the IPv6 on Cable feature guide at:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_ipv6.html

Multiple IP per MAC Support

In earlier Cisco IOS Releases, after a dynamic channel change (DCC) with initialization technique 1 or higher, IP connectivity to a CPE with multiple IPs assigned to a single MAC address, is lost.

Starting with Cisco IOS Release 12.2(33)SCB5, multiple statically-assigned IP addresses to a CPE can be pinged. However, this works only if all the security features, such as verification of IP addresses for cable modems and CPE devices on the upstream, and other security mechanism are disabled.

For more information, see Load Balancing and Dynamic Channel Change on the Cisco CMTS Routers at the following URL:

http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_load-bal_dcc.html

Power and Thermal Monitoring on the Cisco CMTS Routers

As part of the enhancement to the Power and Thermal Monitoring feature, a new command was introduced to power off the Cisco uBR-MC3GX60V cable interface line card when a device temperature reaches critical threshold values on the Cisco CMTS chassis.

• cable linecard critical-event-poweroff

For more information about this command, see the Cisco IOS CMTS Cable Command Reference at:

http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_05_cable_l.html

New and Changed MIB Information in Cisco IOS Release 12.2(33)SCE

The Cisco universal broadband routers include or add support for the following MIBs in Cisco IOS Release 12.2(33)SCE:

• ENTITY-MIB
• CISCO-DOCS-EXT-MIB

Unsupported Hardware

For a list of unsupported hardware, see the End-of-Life and End-of-Sale Notices at:

http://www.cisco.com/en/US/products/hw/cable/ps2209/prod_eol_notices_list.html

Software Feature Restrictions

This section describes other important guidelines or restrictions to consider when running Cisco IOS Release 12.2SC that might not yet be documented in the supporting customer documentation.

DOCSIS

• You cannot configure a US connector to more than one fiber node.
• Multicast over DOCSIS L2VPN does not work for a DOCSIS 3.0-bonded cable modem (CM) when DOCSIS L2VPN is provisioned on a DOCSIS 3.0-bonded CM and downstream multicast traffic is sent over L2VPN. You can use a DOCSIS L2VPN classifier to classify multicast traffic on a secondary DS service flow with SF attributes (TLV 25.31/32) specifying primary DS for the CM. As a result, L2VPN multicast traffic uses the primary DS and L2VPN unicast traffic is forwarded over the primary bonding group. The service flow attribute feature is available in Cisco IOS Release 12.2SCB.

DTI Card Configuration

The Cisco uBR10012 universal broadband router TCC card does not work as expected when the startup configuration contains the configuration for a Cisco uBR10012 universal broadband router TCC+ card. To fix this issue, use the no card slot / subslot 2cable-tccplus command and then configure the DTI card.

In-Service Software Upgrade (ISSU)

On the Cisco uBR-MC3GX60V cable line card, ISSU is not supported for software upgrades between Cisco IOS Release 12.2(33)SCE and all its subsequent maintenance releases. However, ISSU is supported on the Cisco uBR-MC3GX60V line card between Cisco IOS Release 12.2(33)SCE1 and later releases.

NoteFor all other cable line cards, ISSU is supported between Cisco IOS Release 12.2(33)SCE and all its subsequent maintenance releases.

MIBs Restrictions

• IP-MIB is implemented as read-only. Writing is not supported for ipv6IPForwarding or ipv6IpDefaultHopLimit.
• docsIf3MdCfgMcastDsidFwdEnabled object is implemented as read-only.
• cdxBWQueueMaxDepth object sometimes reports a value out of range. The supported range is from 0 to 64, but the object sometimes returns a value of 128 when queried.

PacketCable

Payload Header Suppression (PHS) is not supported on wideband Embedded Media Terminal Adapters (eMTAs) for dynamic downstream service flows.

PCMCIA

While performing an OIR of the PCMCIA disk on PRE2, the System Event Archive (SEA) application and other applications such as IPDR write details to the PCMCIA disk on PRE2.

Before performing the OIR, the multiple system operator (MSO) must disable the write access to the PCMCIA disk on PRE2 using the cable filesystem [enable|disable] command. For more information, see the CSCsz77977 .

PXF

Statistics for two different divert-rate limit (DRL) WAN-IP streams can momentarily overlap or collide and produce statistics that are lower than expected.

Redundancy

• Longer dropout times (about 6 seconds) can occur when you use the OIR method to trigger a cable line card switchover on the Cisco uBR10012 router. To repair or maintain a cable line card and get better switchover performance, use the redundancy linecard-group switchover command to trigger the line card switchover instead.
• Although the software does not prevent it, preconfiguring commands on a protect line card is not supported.
• A dynamic service-flow for a PacketCable call is not deleted during a line card switchover.
• Although the Cisco CMTS router is initially configured only for global N+1 redundancy, the show running-configuration command displays both global and legacy interface-level Hot-Standby Connection-to-Connection Protocol (HCCP) configuration when you change the redundancy mode configuration from SSO to RPR mode. If you switch back to SSO mode, both redundancy configurations are still shown.
• In very rare circumstances, after an N+1 switchover, upstream traffic that is using Baseline Privacy Interface (BPI) encryption is not received properly by the CMTS router. Input errors are logged on the interface and the debug cable error command shows error messages similar to the following:

The issue occurs on upstream channels that use a shared connector, where the other upstream channel using the same shared connector is on another downstream and is shutdown. To workaround this issue, you can activate the downstream and other upstream channel using the same shared connector or temporarily unshare the upstream connector.

Wideband

If you configure a wideband interface with more than one MAC domain host sharing the committed information rate (CIR) bandwidth, then the total wideband interface CIR bandwidth gets fragmented among the MAC domain (MD) hosts sharing the wideband interface CIR bandwidth.

The WB interface CIR bandwidth can be shared by multiple MAC domain hosts, and these MAC domain hosts could potentially be on the same or different cable line cards. As admission control for WB interfaces occurs on cable line cards, the available CIR bandwidth gets partitioned and is given to the MD hosts causing the bandwidth fragmentation. However if a typical service flow CIR is very small compared to the total CIR of the wideband interface, then this fragmentation is not visible until the CIR usage reaches very high levels close to the total interface bandwidth.

With certain bandwidth percentage configuration and traffic distribution, the overall link utilization of dynamic bandwidth sharing (DBS) can be as low as 85 percent. For example, this can occur if the traffic rate on a wideband interface is smaller than its configured bandwidth percentage, but the traffic rate on a modular-cable interface is much larger than its bandwidth percentage. The packet drops occur only on the modular-cable interface which has a larger amount of traffic than its bandwidth-percentage. To workaround this scenario, configure a higher bandwidth percentage to the modular-cable interface, which is larger than or equal to its expected or average traffic rate.

Cisco uBR10012 Universal Broadband Router Hardware Troubleshooting Guide for Cisco IOS Release 12.2SC

Starting with Cisco IOS Release 12.2(33)SCE, the new Cisco uBR10012 Universal Broadband Router Hardware Troubleshooting Guide for Cisco IOS Release 12.2SC documents processes and procedures for user-level hardware troubleshooting on Cisco uBR10012 routers that support Cisco IOS Release 12.2SC and future releases.

This guide is available at the following URL:

http://www.cisco.com/en/US/docs/cable/cmts/ubr10012/troubleshooting/guide_SC_HW/u10trbk_SC.html

NoteSee the existingCisco uBR10012 Universal Broadband Router Troubleshooting Guide for troubleshooting information specific to Cisco IOS Release 12.3 BC releases.

Configuring Downstream Cable Interface Features on the Cisco CMTS Routers

Starting with Cisco IOS Release 12.2(33)SCE, the Configuring Downstream Cable Interface Features on the Cisco CMTS Routers feature guide is no longer available in the Cisco IOS CMTS Cable Software Configuration Guide, Release 12.2SC .

However, all content for this guide is available in chapter 3 of the Cisco uBR10012 Universal Broadband Router Software Configuration Guide .

NoteInformation provided in this chapter applies to the Cisco uBR10-MC5X20, Cisco uBR-MC28U/MC28X, Cisco uBR-MC16U/MC16X, and earlier cable interface line cards.
For information on Cisco UBR-MC20X20V, Cisco uBR-MC88V, and Cisco uBR-MC3GX60V cable interface line cards, see the respective line card configuration guides on www.cisco.com.

Command-Line Interface Changes and Notes

The following command-line interface (CLI) changes in Cisco IOS Release 12.2(33)SCB may not be available in the customer documentation:

• clear arp —The clear arp command has been modified to issue a prompt to the router console requesting confirmation of execution of the command due to potentially serious impact to CMTS router performance. The following is an example of the console prompt:

• show cable modem primary-channel —The word “local’ is shown in the Downstream RFID output field to indicate that the Cisco uBR10-MC5X20S/U/H local downstream is being used as a primary channel.
• show controllers modular-cable —This command will not provide crash dump information for the Cisco 10000 series SIP-600. Use the show diag 1/0 crashdump command to obtain this information for the Cisco 10000 Series SIP-600.
• show hccp detail —The output for this command has been modified to add “CMTS interface pre-critical config.”
• show hw-module bay counters rf-channel —The output for this command has been modified to include RF channel frame rate “MPEG bps” and “MPEG Mbps” fields.
• show policy-map interface cable output class —The ‘pkts output” field is always 0 even when packets are in the queue.

IP Packets and Cisco CMTS Buffer Size

If the Cisco CMTS receives IP packets larger than its default buffer size (8192), the CMTS cannot process these packets. This causes IP fragment issues on the Cisco CMTS.