The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
This release notes contain information about downloading and installing Cisco IOS Release 12.2(33)SCH. It also provides new and changed information, hardware support, limitations and restrictions, and caveats for Cisco IOS Release 12.2(33)SCH.
For software caveats that apply to the Cisco IOS Release 12.2(33)SCH on the Cisco uBR7200 series routers, see the corresponding release notes for Cisco uBR7200 Series Routers.
We recommend that you view the field notices for this release to see if your software or hardware platforms are affected. If you have an account on Cisco.com, you can find field notices at http://www.cisco.com/en/US/customer/support/tsd_products_field_notice_summary.html.
If you do not have a Cisco.com login account, you can find field notices at http://www.cisco.com/en/US/support/tsd_products_field_notice_summary.html.
Note Cisco IOS Release 12.2(33)SCH is generally available for field deployment. However, we recommend that you validate and qualify Cisco IOS Release 12.2(33)SCH in a limited field trial with your specific network configuration requirements in order to ensure a smoother, faster, and successful field deployment.
These sections describe the system requirements for Cisco IOS Release 12.2(33)SCH:
This section describes the memory requirements for Cisco IOS Release 12.2(33)SCH.
Note Effective 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)SCH feature sets.
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Flash Memory 1 |
DRAM Memory 2 |
From |
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DOCSIS Base 3 DES image and Lawful Intercept for Cisco PRE43 |
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2.DRAM memory is not configurable on the Cisco uBR10012 router. |
The following sections list the hardware supported on various Cisco IOS Releases:
Table 1-2 provides information about the supported cable interface line cards and processor engines in Cisco IOS Release 12.2(33)SCH.
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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.
Effective 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
Restrictions During OIR Process
Note The 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 the no card command and create a new configuration for the Cisco uBR-MC3GX60V 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.
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.
Table 1-3 provides information about other hardware supported in Cisco IOS Release 12.2SC.
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:
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 Search Tool at the following URL:
This section describes microcode software that is supported for the Cisco uBR10012 router.
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.
Note The maximum time to upgrade the FPD image on one SPA is 2 minutes. The total FPD upgrade time depends on the number of SPAs.
Note The FPD image package that is used to upgrade SPAs on a router that runs Cisco IOS Release 12.2(33)SCH is the ubr10k-fpd-pkg.122-33.SCH pkg file.
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Note Starting with Cisco IOS Release 12.2(33)SCG, only PRE4 is supported.
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
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
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.
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
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Describes a set of Cisco CMTS documents and contains links to the referenced documents. Go to the following link to access this document: http://www.cisco.com/c/en/us/td/docs/cable/cmts/ubr10012/roadmap/u10krdmp.html |
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Provides information about the software commands used to configure a Cisco CMTS. Includes command syntax, default value, value range, command mode, usage guidelines, and examples. Go to the following link to access this document: http://www.cisco.com/c/en/us/td/docs/cable/cmts/cmd_ref/b_cmts_cable_cmd_ref.html |
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Describes how to plan, install, and configure a Cisco CMTS. Contains information about the supported technologies, interfaces and protocols and can also contain special installation considerations, network diagrams, example applications, system design, and environmental recommendations. Go to the following link to access this document set: http://www.cisco.com/c/en/us/support/video/ubr10000-series-universal-broadband-routers/products-implementation-design-guides-list.html |
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Provides step-by-step instructions for installing or upgrading a Cisco CMTS. Also includes line card installation guides, shipping documents, safety information, and quick-start guides for experienced users. Go to the following link to access this document set: http://www.cisco.com/c/en/us/support/video/ubr10000-series-universal-broadband-routers/products-installation-guides-list.html |
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Contains detailed, step-by-step instructions for configuring a Cisco CMTS, including software feature guides, configuration examples, network diagrams, and technical concepts. Go to the following link to access this document set: http://www.cisco.com/c/en/us/support/video/ubr10000-series-universal-broadband-routers/products-installation-and-configuration-guides-list.html |
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Lists error and system messages for a Cisco CMTS, including any recommended user action for each message. Go to the following link to access this document: http://www.cisco.com/c/en/us/support/video/ubr10000-series-universal-broadband-routers/products-system-message-guides-list.html |
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Provides problem-solving techniques for a Cisco CMTS, including methods to identify problems based on symptoms and recommended actions for resolution. Go to the following link to access this document set: http://www.cisco.com/c/en/us/support/video/ubr10000-series-universal-broadband-routers/products-troubleshooting-guides-list.html |
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:
For frequently asked questions about the Cisco Feature Navigator, see the FAQs at the following URL:
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.
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 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).
The following sections list the new and modified hardware and software features supported on the Cisco uBR10012 universal broadband routers in Cisco IOS Release 12.2(33)SCH:
There are no new hardware features in Cisco IOS Release 12.2(33)SCH6.
There are no new hardware features in Cisco IOS Release 12.2(33)SCH5.
There are no new hardware features in Cisco IOS Release 12.2(33)SCH4.
There are no new hardware features in Cisco IOS Release 12.2(33)SCH3.
There are no new hardware features in Cisco IOS Release 12.2(33)SCH2a.
There are no new hardware features in Cisco IOS Release 12.2(33)SCH2.
This section describes the new cable hardware features in the Cisco IOS Release 12.2(33)SCH1.
Effective with Cisco IOS Release 12.2(33)SCH1, the Cisco Dense Wave Division Multiplexing (DWDM) SFP module is supported on the Cisco uBR10012 router using PRE5.
For more information on the DWDM SFP module part numbers, see the Cisco Performance Routing Engine 5 Hardware Installation Guide at the following URL:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/performance_routing_engine/installation/guide/b_pre5_hig.html
Effective with Cisco IOS Release 12.2(33)SCH1, the Cisco 10GBASE-ER SFP module is supported on the Cisco uBR10012 router using PRE5.
For more information on the Cisco 10GBASE-ER SFP module part number, see the Cisco Performance Routing Engine 5 Hardware Installation Guide at the following URL:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/performance_routing_engine/installation/guide/b_pre5_hig.html
There are no new hardware features in Cisco IOS Release 12.2(33)SCH0a.
This section describes the new cable hardware features in the Cisco IOS Release 12.2(33)SCH.
Cisco IOS Release 12.2(33)SCH introduces support for the Cisco Performance Routing Engine 5 (PRE5) route processing modules.
Note Effective with September 09, 2014, the Cisco PRE5 uses a new version of the CPU. You must run the Cisco IOS Release 12.2(33)SCH2 or a later release on the Cisco PRE5 for using the new version of the CPU. The board serial number of the Cisco PRE5 with the new version of CPU starts with CAT1837XXXX. The deviation label on the board is D507963.
The Cisco PRE5 is the next-generation processor engine for the Cisco uBR10012 Universal Broadband Routers. The PRE5 module comprises two separate engines or processors—route processor that performs all control functions of the PRE5 and the forward packet engine that performs the Parallel eXpress Forwarding (PXF) function and provides fast path forwarding and output scheduling.
For more information on the Cisco PRE5, see the Cisco Performance Routing Engine 5 Hardware Installation Guide at the following URL:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/performance_routing_engine/installation/guide/b_pre5_hig.html
The Cisco 3 Gbps Wideband Shared Port Adapter is a single-wide, half-height shared port adapter that provides DOCSIS network formatting to downstream data packets. It is used for only downstream data traffic. The Cisco 3 Gbps Wideband Shared Port Adapter is a key component for the Cisco IOS features, DOCSIS 3.0 Downstream Channel Bonding and DOCSIS M-CMTS network architecture. The base hostboard is the Cisco 10000 Series SPA Interface Processor-600. Each Cisco 10000 Series SPA Interface Processor-600 jacket can host four Cisco 3 Gbps Wideband Shared Port Adapter cards.
Each Cisco 3 Gbps Wideband Shared Port Adapter has three 1 Gigabit Ethernet ports (no redundant port). The first two Gigabit Ethernet ports on the SPA can be used as a 10 Gigabit Ethernet port (one active and one redundant). The Gigabit Ethernet ports are used to send traffic to one or more external edge QAM devices. The Cisco uBR10012 router can support up to two Cisco 10000 Series SPA Interface Processor-600 jackets and eight Cisco 3 Gbps Wideband Shared Port Adapter. In both the three 1G mode and one 10G mode, each Cisco 3 Gbps Wideband Shared Port Adapter supports up to 72 RF channels and hence a total of 576 RF channels are supported with eight Cisco 3 Gbps Wideband Shared Port Adapters.
The following command was modified:
For more information, see the Cisco uBR10012 Universal Broadband Router SIP and SPA Software Configuration Guide at the following URL:
http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/configuration/ubr10012/b_10k_sip_spa_scg.html
There are no new software features in Cisco IOS Release 12.2(33)SCH6.
This section describes the new software features in the Cisco IOS Release 12.2(33)SCH5.
By default, the iftype for downstream physical channels is set as 1 on the Cisco CMTS router. Effective with Cisco IOS Release 12.2(33)SCH5, to change the iftype value to the IANA-defined value of 257, use the cable snmp iftype ds-phy command.
The following command was introduced:
For more information, see the Cisco CMTS Cable Command Reference at the following URL:
http://www.cisco.com/c/en/us/td/docs/cable/cmts/cmd_ref/b_cmts_cable_cmd_ref.html
There are no new software features in Cisco IOS Release 12.2(33)SCH4.
This section describes the new cable software features in the Cisco IOS Release 12.2(33)SCH3.
Effective with Cisco IOS Release 12.2(33)SCH3, the Divert Rate Limit (DRL) Max-Rate Per Divert-Code can be configured on the WAN interface to reduce the CPU utilization when the Distributed Denial-of-Service (DDoS) attack occurs.
The following commands were introduced:
For more information, see the PXF Divert Rate Limit Enhancement on the Cisco CMTS Routers guide at the following URL:
http://www.cisco.com/c/en/us/td/docs/cable/cmts/config_guide/b_cisco_cmts_networkmgmt_trblshting/b_cisco_cmts_networkmgmt_trblshting_chapter_01010.html
There are no new software features in Cisco IOS Release 12.2(33)SCH2a.
This section describes the new cable software features in the Cisco IOS Release 12.2(33)SCH2.
Effective with Cisco IOS Release 12.2(33)SCH2, the cable modems can come wideband online (w-online) with up to 24 downstream channels and 8 upstream channels. This feature is not supported on the Cisco uBR10012 routers using PRE2.
The following command was modified:
For more information, see the CM Steering on the Cisco CMTS Routers guide at the following URL:
http://www.cisco.com/c/en/us/td/docs/cable/cmts/config_guide/b_cmts_ds_us_features/b_cmts_ds_us_features_chapter_011.html
Effective with Cisco IOS Release 12.2(33)SCH2, the Layer 3 CPE Mobility is introduced. This feature allows the CPEs to move from one cable modem to another.
The following commands were introduced or modified:
For more information, see the Layer 3 CPE Mobility guide at the following URL:
http://www.cisco.com/c/en/us/td/docs/ios/cable/configuration/guide/12_2sc/Cisco_CMTS_Layer3_Bundle_Interface/cmts_L3_CPE_mobility.html
The Route Processor (RP)-only ISSU solution upgrades only the RP images without upgrading the line card images. The RP-only ISSU process skips the redundant line card upgrade phase if the line card image matches the previous or old line card image bundled into the upgrade image. If the line card image does not match the redundant line card upgrade image in bundle, then the line card is upgraded.
The RP-only ISSU process uses existing ISSU commands.
For more information, see the Cisco IOS In Service Software Upgrade Process guide at:
http://www.cisco.com/c/en/us/td/docs/ios/cable/configuration/guide/12_2sc/Cisco_CMTS_High_Avail/cmts_issu.html
The Distribution of Traffic across all Channels in a USBG feature balances the bandwidth utilization across upstream channels on one upstream bonding group. This feature balances the utilization only when upstream channel bonding is enabled and if there is one upstream channel bonding group configured per MAC domain.
The cable upstream balance-scheduler command is introduced for this feature.
For more information, see the Upstream Channel Bonding guide at the following URL:
http://www.cisco.com/c/en/us/td/docs/ios/cable/configuration/guide/12_2sc/Cisco_Downstream_Upstream/ubr_uscb.html
This section describes the new cable software features in the Cisco IOS Release 12.2(33)SCH1.
Effective with Cisco IOS Release 12.2(33)SCH1, the cable modems can come wideband online (w-online) with up to 16 downstream channels and 4 upstream channels. This feature is not supported on the Cisco uBR10012 routers using PRE2.
The following command was modified:
For more information, see the CM Steering on the Cisco CMTS Routers guide at the following URL:
http://www.cisco.com/c/en/us/td/docs/cable/cmts/config_guide/b_cmts_ds_us_features/b_cmts_ds_us_features_chapter_011.html
Effective with Cisco IOS Release 12.2(33) SCH1, load balancing can be activated only on downstream channels. This ensures that upstream load balancing is not activated, allowing a maximum number of channels to be used to bring the upstream bonding cable modems online.
The Disabling Upstream Load Balancing for DOCSIS 3.0 Modems feature can be configured using the downstream-only keyword of the cable load-balance docsis30-enable command.
The following commands were modified:
For more details, see the Load Balancing, Dynamic Channel Change, and Dynamic Bonding Change on the Cisco CMTS Routers guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_load-bal_dcc.html
Effective with Cisco IOS Release 12.2(33) SCH1, TLV63 is supported on the Cisco uBR10012 series routers. This feature provides the ability to limit the maximum number of IPv6 addresses per cable modem using the cable modem v6-max-cpe-prefix command.
The following commands were introduced or modified:
For more information, see the Maximum CPE and Host Parameters for the Cisco CMTS Routers guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_max_cpe_hst.html
There are no new software features in Cisco IOS Release 12.2(33)SCH0a.
This section describes the new cable software features in the Cisco IOS Release 12.2(33)SCH.
The multicast replication cache feature is introduced to improve CPU utilization on the Cisco uBR10012 router. In Cisco IOS releases prior to Cisco IOS Release 12.2(33)SCH, the Cisco uBR10012 router supports multicast replication session creation and deletion, and IGMP leave and join operations of existing multicast replication sessions. By caching the existing multicast replication sessions and reusing them when an IGMP join is received and matched, CPU performance is improved on the Cisco uBR10012 router.
The multicast replication cache can be configured globally for all the interfaces on the Cisco uBR10012 router or can be configured at the interface level for the forwarding interface. The cache size value can be configured using the cable multicast ses-cache command.
The following commands were introduced:
For more information, see DOCSIS 3.0 Multicast Support on the CMTS Routers at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_d30_mcast_support.html
Cisco IOS Release 12.2(33)SCH introduces software license activation on the Cisco PRE5 module and the Cisco 3 Gbps Wideband Shared Port Adapter Module.
The Cisco PRE5 modules has eight 10 Gigabit Ethernet interfaces when both the PRE modules exist in the chassis. Licensing is applicable to these eight 10 Gigabit Ethernet interfaces on the PRE5 module board. With a count 1 license installed on a Route Processor (RP), a local interface and a remote interface on peer RP can be enabled. Two status LEDs display the licenses installed on each RP.
Licensing is supported on the RF channels on Cisco 3 Gbps Wideband Shared Port Adapter Module. The licenses are configured using the card command. A license LED displays the licenses installed on each SPA.
For more information, see Software License Activation on Cisco CMTS Routers at the URL:
http://www.cisco.com/en/US/docs/cable/cmts/license/b_cmts_license_bookmap_1.html
Cisco CMTS supports three types of load balancing (LB): Legacy LB, DOCSIS 2.0 LB, and DOCSIS 3.0 load balancing. The enhancements discussed below are required for improved usability. The following enhancements are included in this release:
The following commands were introduced or modified:
For more information, see the following configuration guide
1. Load Balancing, Dynamic Channel Change, and Dynamic Bonding 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
2. 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
Bonding group for a wideband cable interface on Cisco uBR-MC3GX60V line card includes only downstream RF channels from one controller. This restricts the configuration of RF channels to bonding groups on other two controllers of the Cisco uBR-MC3GX60V cable interface line card.
The Bonding Across 3G60 Controllers Support feature allows the downstream bonding groups on one controller to include RF channels across all three downstream controllers. An RF channel can now belong to a maximum number of 96 bonding groups. The maximum number of RF channel members in a bonding group is 24.
The following commands were modified:
For more information about this feature, see the Configuring the Cisco uBR-MC3GX60V Cable Interface Line Card guide at the following URL:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/broadband_processing_engines/ubr_mc3gx60v/configuration/guide/mc3g60_cfg.html
New combinations of downstream classifiers with a destination MAC address are supported in Cisco IOS Release 12.2(33)SCH and later. This enhancement enables service providers to better manage high priority service flows associated with a downstream classifier. For example, a single User Datagram Protocol (UDP) port can be shared by high priority and low priority traffic.
For more information about this feature, see the DOCSIS 1.1 for the Cisco CMTS Routers feature guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_docsis11.html
The Upstream Channel Descriptor (UCD) Type, Length, Value (TLV) for Ranging Hold-off feature enables the CMTS router to hold off a cable modem from initial ranging based on TLV 18 and 19 specified in the upstream channel descriptor (UCD) messages. The router can hold off a cable modem from initial ranging only for 5 minutes. This feature is supported with DOCSIS 2.0 and later cable modems using upstream logical channels.
The following commands were introduced or modified:
For more information about this feature, see the Cable Modem Steering on the Cisco CMTS Routers feature guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_cm_steer.html
There are no modified software features in Cisco IOS Release 12.2(33)SCH6.
This section describes the modified software features in the Cisco IOS Release 12.2(33)SCH5.
Effective with Cisco IOS Release 12.2(33)SCH5, a new IPDR template is defined for CM-STATUS to support the DOCSIS3.0 OSSI specification version I13. The old template is renamed as CM-STATUS-2008.
The following command was modified:
For more information, see the Cisco CMTS Cable Command Reference at the following URL:
http://www.cisco.com/c/en/us/td/docs/cable/cmts/cmd_ref/b_cmts_cable_cmd_ref.html
There are no modified software features in Cisco IOS Release 12.2(33)SCH4.
There are no modified software features in Cisco IOS Release 12.2(33)SCH3.
There are no modified software features in Cisco IOS Release 12.2(33)SCH2a.
There are no modified software features in Cisco IOS Release 12.2(33)SCH2.
There are no modified software features in Cisco IOS Release 12.2(33)SCH1.
There are no modified software features in Cisco IOS Release 12.2(33)SCH0a.
There are no modified software features in Cisco IOS Release 12.2(33)SCH.
There are no integrated features in Cisco IOS Release 12.2(33)SCH6.
There are no integrated features in Cisco IOS Release 12.2(33)SCH5.
There are no integrated features in Cisco IOS Release 12.2(33)SCH4.
There are no integrated features in Cisco IOS Release 12.2(33)SCH3.
There are no integrated features in Cisco IOS Release 12.2(33)SCH2a.
Effective with Cisco IOS Release 12.2(33) SCH2, if the clock status of the standby DTCC reference is lost or bad, a warning message is reported.
The Standby DTCC Card Failure Alarm feature allows the IOS to check the status of the standby DTCC periodically and report a warning message. If the clock status of the standby DTCC reference is lost or bad, the following message is displayed:
"%UBR10KTCC-4-BADCLK_STANDBY_TCC: No available external clock reference on the standby DTCC card "
For more details, see Cisco IOS CMTS Cable System Messages Guide at the URL: http://www.cisco.com/c/en/us/td/docs/cable/cmts/system/message/uberrmes/uberrchap3.html
Effective from Cisco IOS Release 12.2(33)SCG5, MIB enhancements for upstream channel bonding group (USCB) cable modems (CMs) is implemented. The MIB enhancement provides Transmit Channel Set (TCS) and service flow information.
For more information, see the Cisco CMTS Universal Broadband Router Series MIB Specifications Guide at:
http://www.cisco.com/en/US/docs/cable/cmts/mib/12_2sc/reference/guide/ubrmibv5.html
A set of matching criteria is applied by the cable modems to packets to determine if a packet should be dropped. This set of matching criteria when applied to upstream traffic, is called the Upstream Drop Classifier (UDC). The CMTS only enables the UDC feature on the cable modems.
Effective from Cisco IOS Release 12.2(33)SCG5, the UDC feature can be enabled for all cable modems on any interface of a Cisco uBR10012 or Cisco 7200 Series router by using the cable udc-capability command in interface configuration mode.
The following command were introduced or modified:
For more information on the UDC feature, see the Configuring Upstream Cable Interface Features on the Cisco CMTS Routers guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_upstrm_if.html
There are no integrated features in Cisco IOS Release 12.2(33)SCH0a.
The show cable modem sysDescr command, introduced in Cisco IOS Release 12.2(33)SCG2, provides the system description of a single cable modem without enabling remote query on the Cisco CMTS router. The show cable modem sysDescr command displays result for IPv4 cable modems only.
In Cisco IOS Release 12.2(33)SCG1 and earlier, you cannot view the system description of a single cable modem. Instead, you can view system descriptions of all cable modems after enabling remote query on the Cisco CMTS router using the cable modem remote-query command in global configuration mode. This might impact system performance because it queries all the cable modems connected to the Cisco CMTS router.
For more details about the show cable modem sysDescr command, see the Cisco IOS CMTS Cable Command Reference at: http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_16_show_cable_m_to_show_cable_u.html
To have the 6400 kHz channel width accepted by pasting the configuration only once, Cisco IOS Release 12.2(33)SCG2 introduces the Copy and Paste Support for TDMA to A-TDMA Upgrade feature. If 6400 kHz is set as channel width in TDMA mode or mixed TDMA/A-TDMA mode, DOCSIS mode automatically changes to A-TDMA-only (DOCSIS 2.0) mode.
The following commands were modified:
For more information, see Configuring Upstream Cable Interface Features on the Cisco CMTS Routers configuration guide at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_upstrm_if.html
The depi cin-failover command enables CIN failure triggered line card switchover when DEPI control plane is used, and N+1 is configured. When the CPU utilization is high, DEPI CIN failover may get rejected. Starting Cisco IOS Release 12.2(33)SCF4 and later, cpu-threshold values can be configured using the depi cin-failover cpu-threshold command.
For more information on the command, see Cisco IOS CMTS Cable Command Reference at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html
For more information about this feature, see M-CMTS DEPI Control Plane feature guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/m-cmts_depi_control_plane.html
The DHCPv6 with Full 6VPE Support feature introduced in Cisco IOS Release 12.2(33)SCF4 supports the following capabilities for IPv6 on the Cisco CMTS routers:
The following commands were modified:
For more information about this feature, see the IPv6 on Cable feature guide at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_ipv6.html
Downstream Wideband Resiliency Trap feature enables SNMP traps for Wideband Resiliency-related events and setting of the trap interval.
The following commands were introduced or modified:
For more information, see the Wideband Modem Resiliency feature guide at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_wm_resiliency.html
The following MIB tables and objects are added for the wideband resiliency feature. These MIB objects can be queried when the Cisco CMTS detects a RF channel impairment:
The following traps have been added:
For more information, see Cisco CMTS Universal Broadband Router Series MIB Specifications Guide 12.2SC at:
http://www.cisco.com/en/US/docs/cable/cmts/mib/12_2sc/reference/guide/ubrmibv5.htm
Effective with Cisco IOS Release 12.2(33)SCG1, the Cisco uBR-MC3GX60V line card and up to five Cisco Wideband SPAs can be configured to the same LBG. You can:
For more information about this feature, see the Load Balancing, Dynamic Channel Change, and Dynamic Bonding Change on the Cisco CMTS Routers guide at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_load-bal_dcc_support_TSD_Island_of_Content_Chapter.html
This feature provides an SNMP interface to access information between the physical channel interface and the primary channel interface. The following MIB objects of the CISCO-DOCS-EXT-MIB object can be queried for information about the physical channel interface and the primary channel interface.
For more information, see Cisco CMTS Universal Broadband Router Series MIB Specifications Guide 12.2SC at:
http://www.cisco.com/en/US/docs/cable/cmts/mib/12_2sc/reference/guide/ubrmibv5.html
Reload PXF in the Standby PRE feature fixes most of the double-hit IRAM parity errors by reloading the Parallel Express Forwarding (PXF) in the standby PRE. The PXF can be reloaded periodically, or by a process based on timeout events, in the standby PRE.
The following new command was added:
For more information, see Route Processor Redundancy feature guide at:
http://www.cisco.com/en/US/docs/cable/cmts/feature/u10krpr.html
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
http://tools.cisco.com/ITDIT/MIBS/servlet/index
If Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco MIBs page at the following URL:
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
To access Cisco MIB Locator, 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:
http://tools.cisco.com/RPF/register/register.do
For information about the MIBs supported by the Cisco universal broadband routers, see the Cisco CMTS Universal Broadband Series Router MIB Specifications Guide.
The following MIB was changed in Cisco IOS Release 12.2(33)SCH:
This section describes restrictions for the Cisco universal broadband routers in Cisco IOS Release 12.2(33)SC.
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
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.
Note Effective with Cisco IOS Release 12.2(33)SCG1, the Cisco uBR-MC3GX60V line card and up to five Cisco Wideband SPAs can be configured to the same LBG.
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.
Payload Header Suppression (PHS) is not supported on wideband Embedded Media Terminal Adapters (eMTAs) for dynamic downstream service flows.
Statistics for two different divert-rate limit (DRL) WAN-IP streams can momentarily overlap or collide and produce statistics that are lower than expected.
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.
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.
The following sections list the important notes for the Cisco uBR10012 routers:
There are no important notes for Cisco IOS Release 12.2(33)SCH6.
There are no important notes for Cisco IOS Release 12.2(33)SCH5.
There are no important notes for Cisco IOS Release 12.2(33)SCH4.
There are no important notes for Cisco IOS Release 12.2(33)SCH2a.
There are no important notes for Cisco IOS Release 12.2(33)SCH2.
There are no important notes for Cisco IOS Release 12.2(33)SCH1.
There are no important notes for Cisco IOS Release 12.2(33)SCH0a.
Effective with Cisco IOS Release 12.2(33)SCH, the show cable modem sysDescr command is modified to display the system information for IPv6 cable modems.
For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What’s New in Cisco Product Documentation at: http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html.
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