Release Notes for Cisco uBR924 Cable Access Router for Cisco IOS Release 12.1(5)T November 27, 2000 Part Number: OL-0385-04 Rev.B0 Note You can find the most current Cisco IOS documentation on Cisco Connection Online (CCO). These electronic documents may contain updates and modifications made after this document was published. These release notes for the Cisco uBR924 Cable Access Router describe the enhancements provided in Cisco IOS Release 12.1(5)T.
Introduction • Limitations and Restrictions, page 18 • Important Notes, page 20 • Caveats, page 26 • Related Documentation, page 34 • Obtaining Documentation, page 39 • Obtaining Technical Assistance, page 40 Introduction The DOCSIS-based Cisco uBR924 Cable Access Router gives residential or small office/home office (SOHO) subscribers high-speed Internet or Intranet access.
Early Deployment Releases Early Deployment Releases These release notes describe the Cisco uBR924 Cable Access Router for Cisco IOS Release 12.1(5)T, which is an early deployment (ED) release based on Cisco IOS Release 12.1. Early deployment releases contain fixes for software caveats and support for new Cisco hardware and software features.
Early Deployment Releases Table 1 Early Deployment Releases for the Cisco uBR924 Cable Access Router (continued) ED Release Maintenanc e Release Additional Software Features Availability Release 12.0 XR1 (7) Now Release 12.0 XR (7) • DOCSIS 1.0+ Extensions—Dynamic Multi-SID Assignment and Concatenation • VPN9 Enhancements—Dynamic Crypto Map • NetRanger Support—Cisco IOS Intrusion Detection • Firewall (Phase II)—Cisco Secure Integrated Software • SGCP 1.1 and SGCP MIB • DOCSIS 1.
System Requirements 7. SID = Service ID 8. SNMP = Simple Network Management Protocol 9. VPN = Virtual Private Network 10. DES = Data Encryption Standard 11. VoIP = Voice over Internet Protocol 12. NAT = Network Address Translation 13. PAT = Port Address Translation 14. RIP V2 = Routing Information Protocol version 2 System Requirements This section describes the system requirements for Cisco IOS Releases 12.
System Requirements Table 2 Memory Recommendations for the Cisco uBR924 Cable Access Router, Release 12.1(5)T Feature Sets (continued) Feature Set Matrix Term 1 Image Name Minimum Flash Memory Minimum DRAM Memory Value Small Office—Easy IP, Voice, FW2, and IPSec 56 ubr920-k1o3v4y556i-mz 4 MB Flash 16 MB DRAM RAM Performance Small Office— Easy IP, Voice, FW2, and IPSec 3DES ubr920-k1k2o3v4y5-mz 4 MB Flash 16 MB DRAM RAM Runs From 1. L2TP is not supported in any Cisco IOS Release 12.
System Requirements To configure the Cisco uBR924 Cable Access Router to support multiple classes of service, use either the Cisco Subscriber Registration Center (CSRC) tool or the configuration file editor of your choice. DOCSIS configuration files can contain multiple classes of service (CoS) to support voice. The first CoS is used for data (and voice if no other CoS is defined), and up to three additional classes of service can be defined to give higher priority for voice traffic.
System Requirements For releases earlier than Cisco IOS Release 12.0(5)T—not 12.1(5)T but 12.0(5)T—, the four Ethernet hub ports only support a maximum of three computers when operating in bridging mode. (The maximum of three computers is for all four ports together— not three computers per port).
System Requirements Caution Cisco IOS images with strong encryption (including, but not limited to, 168-bit [3DES] data encryption feature sets) are subject to United States government export controls and have limited distribution. Strong encryption images to be installed outside the United States may require an export license. Customer orders may be denied or subject to delay due to United States government regulations.
New and Changed Information Table 3 Feature List by Feature Set for the Cisco uBR924 Cable Access Router—Voice and Data (continued) Software Images by Feature Set Matrix Term Features Home Office with Voice Value Performance Value Small Telecommuter Telecommuter Office Performance Small Office Layer 2 Tunneling Protocol (L2TP)1 No No No No No Media Gateway Control Protocol (MGCP) Residential Gateway Support Yes Yes Yes Yes Yes NAT—Support for NetMeeting Directory (Internet Locator Service
New and Changed Information Parser Cache The Parser Cache feature optimizes the parsing (translation) of Cisco IOS software configuration command lines by remembering how to parse recently encountered command lines. This feature was developed to improve the scalability of the Cisco IOS software command-line interface (CLI) parser when processing large configuration files.
New and Changed Information Media Gateway Control Protocol Residential Gateway Support Cisco IOS Release 12.1(3a)T1 for the Cisco uBR924 Cable Access Router supports version 0.1 of the Media Gateway Control Protocol (MGCP), a proposed IETF voice control protocol that is intended to eventually supersede the existing SCGP 1.1 protocol. The MGCP 0.1 and SGCP 1.1 protocols have been merged on the Cisco uBR924 router so that the router can respond efficiently to either protocol.
New and Changed Information New Software Features in Release 12.1(2)T The following new software features are supported by the Cisco uBR924 Cable Access Router for Cisco IOS Release 12.1(2)T. For more information on these features, see the documentation listed in the “Related Documentation” section on page 34. Configurable H.225 Timer In previous Cisco IOS releases, the H.225 Transmission Control Protocol (TCP) connection timeout timer was fixed at 15 seconds. Cisco IOS Release 12.
New and Changed Information Note The h323-gateway voip bind command should be used only when the Cisco uBR924 Cable Access Router is operating in routing mode. This command has no effect when the router is operating in DOCSIS bridging mode. This feature was tracked as caveat CSCdp11931, and is introduced in Cisco IOS Release 12.1(2)T. RFC 2233 Support Cisco IOS Release 12.1(2)T updates the IF-MIB MIB with support for RFC 2233, which makes the previous RFC 1573 obsolete.
New and Changed Information DOCSIS 1.0+ Extensions In addition to the other quality-of-service (QoS) features, DOCSIS 1.1 supports a number of features that are required for the delivery of high-quality voice traffic. To use these features before the DOCSIS 1.1 specification is finalized, Cisco has created the DOCSIS 1.
New and Changed Information Ecosystem Gatekeeper Interoperability Enhancements The Ecosystem Gatekeeper Interoperability Enhancements feature improves the ability of voice gateways to move between gatekeepers upon a failure or an outage. Currently, gateways can be configured to switch from their primary gatekeeper to an alternate gatekeeper if a failure or outage occurs. However, moving gateways from one gatekeeper to another can create an imbalance in the number of gateways registered to each gatekeeper.
New and Changed Information By default, the SSH feature uses 56-bit DES encryption. Higher security 168-bit 3DES encryption is available when using Cisco IOS images that support 3DES IPSec encryption. (The SSH client must also support the same level of encryption.) SSH client server is introduced in Cisco IOS Release 12.1(1)T. SNMP Enhancements Cisco IOS Release 12.1(1)T adds support for RFC 2669 and RFC 2670 to the DOCS-CABLE-DEVICE-MIB and DOCS-IF-MIB MIBs, respectively.
Limitations and Restrictions • Radio Frequency Interface MIBs • SGCP MIB Limitations and Restrictions This section describes warnings and cautions about using Cisco IOS Release 12.1(5)T software. Bridging Support The Cisco uBR924 Cable Access Router interoperates with DOCSIS cable networks. Cisco IOS Release 12.1 T does not support bridging traffic across a non-DOCSIS cable network.
Limitations and Restrictions Upgrading Software Images Using BPI To enable BPI encryption, the Cisco uBR924 Cable Access Router must use a Cisco IOS image that supports BPI encryption. If the router's current software image does not support BPI encryption (or if the current software image is corrupted), you must disable BPI encryption in the DOCSIS configuration file and reset the router before you will be able to download a new software image.
Important Notes Important Notes This section contains important information about using Cisco IOS Release 12.1(5)T software. CPE Device Filtering In Cisco IOS Release 12.1(2)T and above, the “docsDevCpeIpMax” attribute defaults to -1 instead of the previous default of 1.
Important Notes Last Maintenance Release of Cisco IOS Release 12.1 T The last maintenance release of the 12.1 T release train is 12.1(5)T. The migration path for customers who need bug fixes for the 12.1 T features is the 12.2 mainline release. The 12.2 mainline release has the complete feature content of 12.1 T and will eventually reach general deployment (GD). The last maintenance release was renamed from 12.1(4)T to 12.1(5)T to synchronize with its parent software base, the 12.
Important Notes • SNMP standard MIBs—These are the MIBs required by any agent supporting SNMPv1 or SNMPv2 network management. • Cable-specific MIBs—These MIBs provide information about the cable interface and related information on the Cisco uBR924 Cable Access Router. They include both DOCSIS-required MIBs and Cisco-specific enterprise MIBs. If your network management applications have not already been configured for the Cisco uBR924 Cable Access Router, these MIBs must be loaded.
Important Notes Cisco Voice MIBs The Cisco uBR924 Cable Access Router supports the Cisco Voice MIBs are supported, which consist of the following components: • CISCO-VOICE-IF-MIB • CISCO-VOICE-DIAL-CONTROL-MIB • CISCO-VOICE-ANALOG-MIB • CISCO-DIAL-CONTROL-MIB • DIAL-CONTROL-MIB • SGCP-MIB • XGCP-MIB Radio Frequency Interface MIBs The Cisco uBR924 Cable Access Router supports the Radio Frequency Interface (RFI) MIB.
Important Notes Note • xgcpMsgStatTable—Table that contains SGCP statistics information since reset • xgcpMsgStatEntry—Row in the “xgcpMsgStatTable” that contains information about SGCP message statistics per IP address of the Media Gateway Controller (MGC) • xgcpIPAddress—IP address of the MGC • xgcpSuccessMessages—Number of successful messages that communicate with the MGC on that IP address • xgcpFailMessages—Number of failed messages that communicate with the MGC on that IP address • xgcpUp
Important Notes Table 4 Supported MIBs for the Cisco uBR924 Cable Access Router (continued) MIB Filename Description CISCO-CABLE-SPECTRUM-MIB.my This module describes the spectrum management flap list CISCO-CABLE-SPECTRUM-MIB-V1SMI.my attributes. DOCS-IF-MIB.my DOCS-IF-MIB-V1SMI.my DOCS-BPI-MIB.my DOCS-BPI-MIB-V1SMI.my CISCO-DOCS-EXT-MIB.my CISCO-DOCS-EXT-MIB-V1SMI.my DOCS-CABLE-DEVICE-MIB-V1SMI.my Note 12.0(5)T1 This module describes the DOCSIS-compliant Radio 12.
Caveats Table 5 Replacements for Deprecated MIBs Replacement MIBs Deprecated MIB SNMPv1 MIB SNMPv2 MIB OLD-CISCO-APPLETALK-MIB RFC1243-MIB — OLD-CISCO-CHASSIS-MIB ENTITY-MIB-V1SMI ENTITY-MIB OLD-CISCO-CPU-MIB — CISCO-PROCESS-MIB OLD-CISCO-DECNET-MIB — — OLD-CISCO-ENV-MIB CISCO-ENVMON-MIB-V1SMI CISCO-ENVMON-MIB OLD-CISCO-FLASH-MIB CISCO-FLASH-MIB-V1SMI CISCO-FLASH-MIB OLD-CISCO-INTERFACES-MIB IF-MIB-V1SMI CISCO-QUEUE-MIB-V1SMI IF-MIB CISCO-QUEUE-MIB OLD-CISCO-IP-MIB — — OLD-CISC
Caveats For more information on caveats in Cisco IOS Release 12.1 T, see the Caveats for Cisco IOS Release 12.1 T document. All caveats in Cisco IOS Release 12.1 are also in Cisco IOS Release 12.1 T. For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1. These documents list severity 1 and 2 caveats and only selected severity 3 caveats, and are located on CCO and the Documentation CD-ROM.
Caveats • CSCdp13089 and CSCdp90276 The voice-port cptone command does not support the set of telephony tones used in the Czech Republic or in Switzerland. There is no workaround. • CSCdr28707 The show interface command can show an impossible number of CRC errors on the cable interface when transmitting VoIP traffic. When this error occurs, the number of cyclic redundancy check (CRC) errors typically exceeds a billion errors and is greater than the total number of packets transmitted on the interface.
Caveats • CSCdp37677 and CSCdp38842 The DOCS-CABLE-DEVICE-MIB.my MIB has been updated to be compliant with RFC 2669, DOCSIS Cable Device MIB Cable Device Management Information Base for DOCSIS Compliant Cable Modems and Cable Modem Termination Systems. This includes the following changes: The root object “docsDevMIB” has become “docsDev”. The Object Identifier (OID) for the root has changed from 83 (experimental) to 69 (mib-2).
Caveats • CSCdm93891 and CSCdp39237 The DOCS-IF-MIB has been updated to support RFC 2670, Radio Frequency (RF) Interface Management Information Base for MCNS/DOCSIS Compliant RF Interfaces. This change is in the DOCS-IF-MIB file with a LAST-UPDATED field of “9908190000Z” or later.
Caveats Attribute Change docsIfCmtsServiceCreateTime The syntax has changed from TimeTicks to TimeStamp. docsIfCmtsQosProfilePermissions The syntax has changed from OCTET STRING to BITS. This caveat is resolved in Cisco IOS Release 12.1(1)T. • CSCdp41317 This caveat adds support for RFC 2233-compliant link-up and link-down traps. By default, link-up and link-down traps are implemented as given in the CISCO-IF-CAPABILITY.my MIB.
Caveats This caveat was closed without modification because GRE tunnels are not currently supported on any software image for the Cisco uBR924 Cable Access Routers. IPSec tunnels, however, are supported when using Cisco IOS images that support IPSec encryption. • CSCdr11723 This caveat described a situation in which two Cisco uBR924 Cable Access Routers could no longer establish voice calls. The routers needed to be reloaded before being able to make additional voice calls.
Caveats • CSCdr43824 In Cisco IOS Release 12.1(2)T, if two (or more) dial-peers were configured with destination patterns terminated by T, then calls with a dial number that was completed by the # key were routed only to the first matching dial-peer, even if other dial-peers are a better match. There was no workaround. • CSCdr61697 The Cisco uBR924 Cable Access Router defaults to using the ip address dhcp command to set the IP address for the cable interface during power-on provisioning.
Related Documentation • CSCds24499 RIP V2 updates stop after the Cisco uBR924 router attempts a renewal of its DHCP lease, which happens at approximately the half-life of the DHCP lease. Workaround: Restart the RIP process on the router by issuing the no router rip and router rip commands. However, this restores the RIP updates only until the next DHCP lease renewal; restarting the routing process also forces the cable interface to go down and come back up. This caveat is resolved in Cisco ISO Release 12.
Related Documentation On the Documentation CD-ROM at: Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS 12.1: Caveats If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, go to CCO and press Login. Then go to Software Center: Cisco IOS Software: Cisco Bugtool Navigator II. Another option is to go to http://www.cisco.com/support/bugtools (you must have an account on CCO to access this site).
Related Documentation On the Documentation CD-ROM at: Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation Cisco IOS Software Documentation Set The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that are available in electronic form on the Documentation CD-ROM and CCO and in printed form on request.
Related Documentation Table 6 Cisco IOS Software Release 12.
Related Documentation Table 6 Cisco IOS Software Release 12.
Obtaining Documentation Table 6 Cisco IOS Software Release 12.1 Documentation Set (continued) Books Major Topics • Cisco IOS Configuration Master Index • Cisco IOS Command Reference Master Index • Cisco IOS Debug Command Reference • Cisco IOS Dial Services Quick Configuration Guide • Cisco IOS Software System Error Messages • Cisco IOS Configuration Guide Master Index • New Features in 12.1-Based Limited Lifetime Releases • New Features in Release 12.
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