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 document contains information about downloading and installing Cisco IOS Release 12.2(33)SCD. It also provides new and changed information, hardware support, limitations and restrictions, and caveats for Cisco IOS Release 12.2(33)SCD.
For software caveats that apply to the Cisco IOS Release 12.2(33)SCD 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 .
These sections describe the system requirements for Cisco IOS Release 12.2(33)SCD:
This section describes the memory requirements for Cisco IOS Release 12.2(33)SCD.
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)SCD feature sets.
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Flash Memory |
DRAM Memory 1 |
From |
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DOCSIS Base 3 DES image and Lawful Intercept for Cisco PRE22 |
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1.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 cable interface line cards supported in Cisco IOS Release 12.2(33)SCD.
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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
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 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.
The Cisco uBR10012 universal broadband router supports up to four network line cards with any combination of the following cards:
NoteCisco HHGE line card is supported only with PRE2.
Table 1-3 provides information about other hardware supported in Cisco IOS Release 12.2(33)SCD.
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 Toolkit at the following URL:
http://tools.cisco.com/Support/BugToolKit/action.do?hdnAction=searchBugs
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.
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)SCD is the ubr10k-fpd-pkg.122-33.SCD pkg file.
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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/en/US/products/hw/cable/ps2209/ |
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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/en/US/docs/cable/cmts/system/message/uberrmes.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/en/US/products/hw/cable/ps2209/ |
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)SCD:
There are no new hardware features in Cisco IOS Release 12.2(33)SCD8.
The following features introduced in an earlier Cisco IOS Release are now supported in Cisco IOS Release12.2(33)SCD8:
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:
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.
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:
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.
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:
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.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD7.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD6.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD5.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD4.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD3.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD2.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD1.
There are no new hardware features in Cisco IOS Release 12.2(33)SCD.
There are no new software features in Cisco IOS Release 12.2(33)SCD8.
There are no modified software features in Cisco IOS Release 12.2(33)SCD8.
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
There are no new software features in Cisco IOS Release 12.2(33)SCD6.
There are no modified software features in Cisco IOS Release 12.2(33)SCD6.
This section lists the new features in Cisco IOS Release 12.2(33)SCD5. Some features may be new to Cisco IOS Release 12.2(33)SCD5 but were released in earlier Cisco IOS software releases.
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:
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
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:
The following commands are new or modified:
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
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:
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
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:
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
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:
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
There are no modified features in Cisco IOS Release 12.2(33)SCD5.
There are no new software features in Cisco IOS Release 12.2(33)SCD4.
There are no modified features in Cisco IOS Release 12.2(33)SCD4.
This section lists the new features in Cisco IOS Release 12.2(33)SCD3. Some of the features that were released in earlier Cisco IOS software releases are now supported in Cisco IOS Release 12.2(33) SCD3.
The RF-Power Delta feature introduced in Cisco IOS Release 12.2(33)SCC4 is now supported in Cisco IOS Release 12.2(33)SCD3.
The RF power adjustment feature enables compensation of the extra power loss in the protect path of the Cisco RF Switch. This feature has been enhanced in the Cisco IOS Release 12.2(33)SCC4:
The following commands are new or modified for this feature:
For more information about the member subslot 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_13_i_to_p.html
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
There are no modified software features in Cisco IOS Release 12.2(33)SCD3.
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 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
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
Single step upgrade process is the ability of the ISSU feature to upgrade the entire CMTS system using the new issu changeversion command. This process allows the networking device to inform the system that the networking device is performing a complete upgrade cycle automatically, and allows the state transitions to move to the next step automatically.
For detailed information about the ISSU single step upgrade process, see the Cisco IOS In Service Software Upgrade Process document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_issu.html
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
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
A new command, show cable modem partial-mode , was introduced in Cisco IOS Release 12.2(33)SCD2 to display information about the cable modems that are in upstream and downstream partial service mode.
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_16_show_cable_m_to_show_cable_u.html
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:
The following SNMP objects have been added to the CISCO-CABLE-QOS-MONITOR-MIB:
The following commands are new or modified:
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
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:
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
The UBR-MC20X20V cable interface line card additionally supports 10 downstream and 15 downstream licenses.
For more information, see the Configuring the Cisco UBR-MC20X20V Cable Interface Line Card document at:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/broadband_processing_engines/ubr_mc20x20v/configuration/guide/mc20x20v_cfg.html
There are no new software features in Cisco IOS Release 12.2(33)SCD1.
There are no modified software features in Cisco IOS Release 12.2(33)SCD1.
The hotlist keyword has been added to the show interface cable privacy command to display the cable modem detected as clones.
For more details, see the Cisco IOS CMTS Cable Command Reference and DOCSIS 1.1 for the Cisco CMTS Routers documents at:
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_docsis11.html
Incorrect RADIUS server entries can cause CMTS memory leak over an extended period of time. The clear packetcable rks command allows you to clear the record keeping server (RKS) entries when no calls are associated with it.
For more details, see the Cisco IOS CMTS Cable Command Reference and PacketCable and PacketCable Multimedia for the Cisco CMTS Routers documents at:
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_pktcable_mm.html
A new command, rf-channel stacking, was introduced in Cisco IOS Release 12.2(33)SCD to suppress a carrier or mute an RF channel on the Cisco uBR-MC88V line card. By default, the stacking number is configured as 4. If you change the default stacking number configuration, traffic loss may occur on the active channels. That is, if you change the stacking number from 4 to 2, traffic is interrupted on the RF channels 0 and 1.
For more details, see the Cisco IOS CMTS Cable Command Reference document at:
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_14_q_to_sg.html
The following software features were modified to add support in Cisco IOS Release 12.2(33)SCD:
For detailed information about this feature, see the Cisco DOCSIS 3.0 Downstream Solution Design and Implementation Guide document at:
http://www.cisco.com/en/US/docs/cable/cmts/wideband/solution/guide/release_2.0/ds_solu.html
For detailed information about this feature, see the Upstream Channel Bonding document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_uscb.html
For more information about this feature, see the DOCSIS 1.1 for the Cisco CMTS Routers document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_docsis11_ps2209_TSD_Products_Configuration_Guide_Chapter.html
For detailed information about these commands, see the Cisco IOS Software Activation Command Reference document at:
http://www.cisco.com/en/US/docs/ios-xml/ios/csa/command/csa-cr-book.html
For more information on the DBS, see the Dynamic Bandwidth Sharing on the Cisco CMTS Router document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_dyn_bw_sharing.html
For more information about this feature, see the Wideband Modem Resiliency document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_wm_resiliency.html
For more information about this feature, see the DOCSIS 3.0 Downstream Utility for Bronze Certification document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_ds_bonding.html
For more details on this feature, refer to SCDMA and Logical Channel Support on the Cisco CMTS Routers at the following location: http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_d30_scdma_lc.html
For more details on this feature, refer to DOCSIS 3.0 Multicast Support on the CMTS Routers at the following location:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_d30_mcast_support.html
For more details on this feature, refer to DOCSIS WFQ Scheduler on the Cisco CMTS Routers at the following location: http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_docsis_wfq_sch.html
For detailed information about this feature, see the DOCSIS 3.0 Multicast Support on the CMTS Routers document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_d30_mcast_support.html
For more details on this feature, refer to DOCSIS 3.0 CRL and OCSP on the Cisco CMTS Routers at the following location: http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_crl_ocsp.html
For detailed information about this feature, see the DOCSIS WFQ Scheduler on the Cisco CMTS Routers document at:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_docsis_wfq_sch.html
For detailed information about this feature, see the Service Flow Admission Control for the Cisco CMTS Routers document at the following URL:
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_svflw_ad_ctl.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 Cisco universal broadband routers include or add support for the following MIBs in Cisco IOS Release 12.2(33)SCD:
This section describes restrictions for the Cisco universal broadband routers in Cisco IOS Release 12.2(33)SCD.
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.
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.
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 .
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.
NoteThis section describes important changes in various Cisco IOS Releases that differ from support found in earlier software releases supported by the Cisco CMTS routers. This section is subject to change and is not intended to cover all changes found in the software. There may be other changes within the software that are not identified here, such as within the new and modified features. Closely read these release notes in their entirety, as well as review the related caveats documents for more information.
Table 6 identifies some of the key changes that you should consider when running Cisco IOS Release 12.2(33)SCD.
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Clearing Address Resolution Protocol (ARP) Entries Using the clear arp command can take about 15 seconds to remove all ARP table entries. |
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RPF on the Cisco uBR10012 router requires configuration of the ip verify unicast source reachable-via rx allow-default command to properly interpret default routes. |
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The DOCSIS Weighted Fair Queuing (WFQ) Scheduler replaces the Versatile Traffic Management System (VTMS) scheduler operation on the Cisco uBR10012 router. For more information, see the feature documentation at: http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_docsis_wfq_sch.html |
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SPA Interface Processor/Shared Port Adapters
http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/configuration/ubr10012/12.3_23_bc/10fpd.html |
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The Spatial Reuse Protocol (SRP) for the Cisco uBR10012 OC-48 line card is not supported. |
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Modular QoS CLI Change Between Cisco IOS Release 12.3BC and Cisco IOS Release 12.2SC and the DOCSIS WFQ Implementation The priority command does not have any arguments. You must use the police command to specify a guaranteed bandwidth. |
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To support logical channel feature, the ordering of the "channel-width" and "docsis-mode" parameters have changed in the cable upstream docsis-mode and cable upstream channel-width commands. Because "channel-width" is a physical channel level parameter, it must be configured before "docsis-mode", which is a logical channel level parameter. For more details on this feature, see the SCDMA and Logical Channel Support on the Cisco CMTS Routers at the following location: http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_d30_scdma_lc.html |
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Behavior Change in DOCSIS Set-top Gateway Tunnel When the DOCSIS Set-top Gateway (DSG) is configured to have a quality of service (QoS) for the DSG tunnel, ensure that the default multicast QoS (MQoS) is configured by using the following command: where service class name is any service class name.
This behavior is observed only when you toggle (enable/disable) the default MQoS. |
This section describes important topics that might not be available in the customer documentation.
The following command-line interface (CLI) changes in Cisco IOS Release 12.2(33)SCB may not be available in the customer documentation:
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation , which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.