- Cisco Bug Search
- Open Caveats—Cisco IOS Release 12.2(33)SCE6
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE6
- Open Caveats—Cisco IOS Release 12.2(33)SCE5
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE5
- Open Caveats—Cisco IOS Release 12.2(33)SCE4
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE4
- Open Caveats—Cisco IOS Release 12.2(33)SCE3
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE3
- Open Cave ats—Cisco IOS Release 12.2(33)SCE2
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE2
- Open Caveats—Cisco IOS Release 12.2(33)SCE1
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE1
- Open Caveats—Cisco IOS Release 12.2(33)SCE
- Resolved Caveats—Cisco IOS Release 12.2(33)SCE
Caveat List for Cisco IOS Release 12.2(33)SCE
This chapter describes open and resolved severity 1 and 2 caveats and select severity 3 caveats:
- The “Open Caveats” sections list open caveats that apply to the current release and may apply to previous releases. A caveat that is open for a prior release and is still unresolved applies to all future releases until it is resolved.
- The “Resolved Caveats” sections list caveats resolved in a specific release, but open in previous releases.
The bug IDs are sorted alphanumerically.
NoteThe Caveats section includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a specific caveat you must use the Bug Search Tool.
Cisco Bug Search
Cisco Bug Search Tool (BST), the online successor to Bug Toolkit, is designed to improve effectiveness in network risk management and device troubleshooting. You can search for bugs based on product, release, and keyword, and aggregates key data such as bug details, product, and version. For more details on the tool, see the help page located at http://www.cisco.com/web/applicat/cbsshelp/help.html .
Open Caveats—Cisco IOS Release 12.2(33)SCE6
Resolved Caveats—Cisco IOS Release 12.2(33)SCE6
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Multicast authorization fails after line card switchover since CPE cannot receive traffic. |
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PRE crashes when static multicast configuration with MQoS is present on the bundle and cable interfaces, and bundle interface is removed using the no interface bundle command. |
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The Cisco CMTS router may crash when downstream RF channels are removed from the host interface. |
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Line card crash observed after multicast admission control failure. |
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Dynamic service flows are created when the dsa test command is issued causing a bandwidth mismatch on the line card and the Route Processor. |
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The route processor CPU is observed to be 99% and the CMTS multicast Q process is observed to be 90% when configuring nearly 100 subinterfaces with a VRF. |
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The standby PRE reloads automatically due to spectrum-group configuration mismatch. |
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The DEPI Path Redundancy (DPR) line card failover on the protect Cisco uBR-MC3GX60 line card is falsely triggered. |
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The Cisco IOS Software Internet Key Exchange (IKE) feature contains a denial of service (DoS) vulnerability. Cisco has released free software updates that address this vulnerability. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-ike |
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With multicast DSIDs, a single seq-out-of-range message may impact many cable modems and result in packet drops. |
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Cable modem loses Layer 3 connectivity after line card switchover. |
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The admin state of if-channel may not be correct when Downstream External PHY Interface (DEPI) session is not established. |
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Spectrum errors are observed on the Cisco CMTS router when running the spectrum analyzer. This issue is observed on the Cisco uBR-MC3GX60V line card. |
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In a redundant SSO failover setup, the active PRE4 may hang due to Cisco uBR10-MC5X20 line card crash. |
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Upstream frequency overlapping is observed with spectrum group configuration. |
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The Cisco uBR-MC3GX60V line card evaluation license expires without a Systole expiration notification, when a permanent license exists on the line card. |
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All cable line cards fail after a PRE failure, if only one PRE is detected. |
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After a PRE switchover, the cable modem database is corrupt on the active PRE. |
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CPU hog and traceback are seen when a fiber-node is modified on the Cisco CMTS causing a line card crash. This issue is observed when the cable downstream channel-id command is configured. |
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The IPC of SPA interface processors (SIPs) and DTCC cards are lost with IGMP leave or join requests. |
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When a cable modem is registered with DOCSIS 1.0 configuration file, the downstream MaxSusRate is changed unexpectedly by the enforced QoS profile. |
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Cannot ping from a switch to a directly connected Cisco CMTS router GigE interface when a QoS policy is applied on the interface of the router. |
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The show inventory command does not display the right card type for each either PRE2 (PCMCIA card) or PRE4 (compact flash card). |
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The 5x1GigE SPA interface does not forward dot1q L2VPN traffic after running the hw-module bay reload command. |
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After a PRE switchover, the modems disappear from PRE modem database, but are available line card modem database. |
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The standby PRE crashes several times at the c10k_remote_pre_attention_interrupt. |
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The docsQos3ServiceFlowChSetId of the upstream service flow is incorrect for upstream channel-bonded modems. |
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Traceback is observed at cr10k_message_send_rpc_blocked after a line card and PRE switchover. |
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The route processor crashed when cable service class command was configured. |
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The Cisco CMTS does not forward the “Confirm” messages sent by the IPv6 CPE to the DHCP server. |
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Packets drop and there is low downstream throughput from wideband modems after a Cisco uBR-MC3GX60V line card failover. |
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The docsIf3DsChSetChList MIB object does not popluate the bonding group channel set on the Cisco CMTS router. |
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Crash observed on the Cisco uBR-MC3GX60V line card. This issue was observed when multicast QoS with encryption is configured. |
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The Cisco uBR10-MC5X20 line card crashed with corrupted program counter. |
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Cable modems are unreachable when the cable modem reports a downstream service identifier (DSID) sequence error message. |
Open Caveats—Cisco IOS Release 12.2(33)SCE5
Resolved Caveats—Cisco IOS Release 12.2(33)SCE5
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A Cisco router or switch may experience a crash when running commands with large output through a KRON job. |
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Removing secondary IP address in VRF causes assert and traceback messages. |
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A crash occurs on Onboard Failure Logging (OBFL) voltage application when line card OIR is performed and a clear logging command is issued. |
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The Cisco CMTS reloads and crash file indicates a cache error. |
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The standby router continues to reload while shutting down the sessions. |
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The NTP clock-period error compensation causes an approximate 5 second drift in the local system clock over a 24-hour period. |
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A Cisco router shows a PRE crash due to memory corruption with block overrun. |
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The show x25 hunt-group command generates the following error: | | %DATACORRUPTION-1-DATAINCONSISTENCY: copy error |
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SPA channels are not included in the DOCSIS3.0 GLBG that is generated by the CMTS based on fiber node configuration. |
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Using the show cable modem ip qos command can result in inaccurate downstream service flow throughput rate display. |
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The Cisco uBR-MC5x20H line card crashed after an upstream service flow was deleted when the bandwidth request was received for the same service flow. |
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All line cards crash when the reload of the chassis is performed. |
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A memory leak is caused by repeated Downstream External PHY Interface (DEPI) or Layer 2 Tunneling Protocol (L2TP) session disconnects. |
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The cable modem does not come online and displays the "No Space in RP srv flow table" error. |
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Cable modems are not reachable after an OIR of the Cisco uBR10-MC3GX60V line card. |
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Configuring an event manager policy and copying it to the device, causes the device to stop responding. |
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Configuring 16-channel bonding groups causes multiple line card crashes when 16-channel modems attempt to register with the M-CMTS. |
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After transferring a license from one line card to another line card, show license detail and show license all commands do not display accurate output. |
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The CMTS reports two DHCPv6 IA_NA addresses assigned as a router instead of one router. |
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Cable modems within a fiber node are moved to another restricted load balancing group in another fiber node when load balancing is configured on the Cisco uBR10012 router. |
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Cable modems are not in w-online state and channel bonding association entries are not displayed. This issue is seen on Cisco uBR10012 router with a Cisco Wideband SPA. |
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Route processor service flow error messages do not appear on the console when default MQoS is configured. |
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A vulnerability in the Multicast Source Discovery Protocol (MSDP) implementation of Cisco IOS Software and Cisco IOS XE Software could allow a remote, unauthenticated attacker to cause a reload of an affected device. Repeated attempts to exploit this vulnerability could result in a sustained denial of service (DoS) condition. Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-msdp |
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Multicast traffic is interrupted after a line card switchover. |
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Cable modems are assigned incorrect Restricted Load Balancing Group (RLBG) when not assigned to the fiber node configuration. |
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The following error messages are displayed on the Cisco uBR10012 router: | | No information on VLAN |
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The Cisco uBR10012 router crashes due to memory corruption when the show cable memory command is issued. |
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When copying a configuration file to the startup configuration, the startup configuration allows the same DOCSIS Setup Gateway (DSG) channels to be configured to multiple mac-domains. |
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Performance Routing Engine (PRE) shows high CPU usage when modular and wideband interfaces are shutdown. |
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Inter Process Communication (IPC) goes down between the line card and the guardian line card after an upgrade. |
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Duplicate IPv6 link local addresses are learnt as cable modems or CPE entries. This causes the show commands to display incorrect entries. |
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A vulnerability exists in the Cisco IOS Software that may allow a remote application or device to exceed its authorization level when authentication, authorization, and accounting (AAA) authorization is used. This vulnerability requires that the HTTP or HTTPS server is enabled on the Cisco IOS device. Products that are not running Cisco IOS Software are not vulnerable. Cisco has released free software updates that address these vulnerabilities. The HTTP server may be disabled as a workaround for the vulnerability described in this advisory. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-pai |
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The show interface upstream causes a crash on Cisco uBR-MC3GX60 line card. |
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Internet Protocol Detail Record (IPDR) processing stops due to an unknown reason. |
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Unexpected debug messages and tracebacks are shown on the console during a line card switchover. |
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Cisco CMTS is behaving in an inconsistent manner when ciaddr is set to 0.0.0.0 |
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Cable modem upstream interfaces on the Cisco uBR-MC3GX60 line card are not available for SNMP polling. |
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Policy-based routing does not work with cable intercept functionality on the Cisco CMTS router. |
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The CM on the modular interface may go offline during In-Service Software Upgrade (ISSU). |
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Replacement of the Cisco Wideband SPA causes the line card to crash and the PRE to become unresponsive. |
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The Cisco uBR10012 router is unable to communicate with external IP address via Ethernet interface on HHGE. |
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Modems are no longer displayed in the modem list of the load balancing group (LBG) after a line card switchover. |
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DOCSIS Set-Top Gateway (DSG) cannot be configured on the cable interface. |
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The no ipdr session id or no ipdr collector name command reloads the standby PRE |
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The SNMP object ccacUsBGEntry has a slow response with upstream bonding groups. |
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Wideband cable modems go offline on a Cisco uBR10-MC20X20 line card. |
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When a layer 3 IPv6 configuration on the bundle interface changes, the IPv4 cable modems also go offline. |
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The output of the show cable modem wideband and show cable mac-domain cable rcc is not matching the receive channel configuration (RCC) ID and MAC Domain Downstream Service Group ID (MD-DS-SG) in an uBR10012 router running Cisco IOS Release 12.2(33)SCF. |
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%C4K_HWPORTMAN-4-BLOCKEDTXQUEUE error occur on the GigE link between RF Gateway 10 and the Cisco uBR10012. |
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After a PRE switchover, %SCHED-3-STILLWATCHING traceback is seen on the active PRE. |
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The CM steering feature does not work if there is even one DOCSIS 3.0 modem with RF issues in the plant. |
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Dynamic Service flows for PCMM voice fail due to "0" length TLV sent by the Cisco CMTS. |
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The Cisco UBR-MC20X20 line card crashes to ROMMON prompt when the format bootflash command is executed on the line card. |
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Defaults values for the switchover pxf restart are not displayed in the output for the show run all command. |
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Packet counters do not match with MPEG frames when the ccwbRFChannelMpegPkts MIB is used on the Cisco uBR-MC3GX60V line card. |
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The following error message occurs on Cisco uBR-MC3GX60V line card: |
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High CPU causes DEPI session flaps resulting in false detection of failure and N+1 line card failover. |
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The SIP-600 card fails to get interprocess communication (IPC) information from the route processor (RP) after performing ISSU MDR several times. |
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Standby PRE sometimes cannot take over from the Active PRE through send break. |
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Open Caveats—Cisco IOS Release 12.2(33)SCE4
Resolved Caveats—Cisco IOS Release 12.2(33)SCE4
Open Caveats—Cisco IOS Release 12.2(33)SCE3
Resolved Caveats—Cisco IOS Release 12.2(33)SCE3
Open Caveats—Cisco IOS Release 12.2(33)SCE2
Resolved Caveats—Cisco IOS Release 12.2(33)SCE2
Open Caveats—Cisco IOS Release 12.2(33)SCE1
Resolved Caveats—Cisco IOS Release 12.2(33)SCE1
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Cisco CMTS router crashes when the show buffers usage command is executed repeatedly. |
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IOS DHCP Client incorrectly populates message-type option in DHCP lease query. The message-type option is set to 0x0d (DHCPLEASEACTIVE) instead of being set to 0x0a (DHCPLEASEQUERY). |
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Static routes configured in the startup config do not take into effect till the router is re-configured. |
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Multicast ping works only for first few seconds when a tunnel is created. |
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Users with lower privilege levels than enable access may not be able to execute some show cable command options. |
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The Cisco IOS Software network address translation (NAT) feature contains multiple denial of service (DoS) vulnerabilities in the translation of the following protocols: NetMeeting Directory (Lightweight Directory Access Protocol, LDAP) Session Initiation Protocol (Multiple vulnerabilities) All the vulnerabilities described in this document are caused by packets in transit on the affected devices when those packets require application layer translation. Cisco has released free software updates that address these vulnerabilities. This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-nat . |
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Memory leaks are observed on Cisco UBR-MC20X20V protect line card although, line card switchover was not performed. |
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Cable line card crashes because of IP header (IPH) length error check. |
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Standby performance routing engine (PRE) may crash when UBR10K RP-CLC ISSU PROXY RF client fails to complete the RF_PROG_ISSU_NEGOTIATION progression. |
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Password is prompted for twice for authentication when login authentication has the line password as fallback and RADIUS as primary. |
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SFP Missing Critical Alarm should be cleared if the interface is in "admin shutdown" status even if SFP is not installed. |
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Cisco IOS Software contains a memory leak vulnerability in the Data-Link Switching (DLSw) feature that could result in a device reload when processing crafted IP Protocol 91 packets. Cisco has released free software updates that address this vulnerability. This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-dlsw . |
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Rate-limiting on the upstream channel is activated before the peak rate is reached leading to bandwidth requests being dropped prematurely on the Cisco UBR10-MC20X20 line card. |
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The DOCSIS 3.0 PC call stops working after the media terminal adapter (MTA) goes into a partial mode of one downstream. |
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Cisco IOS device may experience a device reload when the Cisco IOS device is configured for SNMP and receives certain SNMP packets from an authenticated user. |
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The interface column length of show cable modem cx/y/z docsis version summary needs to be increased. |
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CPE is not receiving multicast traffic data packets after the Cisco uBR-MC20X20V line card failover. |
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When the Cisco CMTS acts as a TFTP proxy server for the CMs to download the configuration file, the CMTS should use IPv6 source address selection to determine the IPv6 source address for that transfer |
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Online insertion and removal (OIR) of a shared port adapter (SPA) does not trigger call home events. |
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The docsIfCmtsCmStatusEntry object identifier takes longer time to access the associated MIBs. |
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The DHCP-Relay SOLICIT message from the CMTS to the DHCP server is sourced from the outgoing Gigabit Ethernet IPv6 IP address rather than the bundle IPv6 IP address. |
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The PRE crashes when the Internet Protocol Data Records (IPDR) session is reconfigured and when the IPDR exporter is started or stopped. |
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The CMTS may crash when too many rules are configured for the same IPv6 ACL group. |
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Line card crashes during bootup and machine check exception error is displayed. |
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The standby PRE4 crashes with an "Illegal access to a low address" message. |
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The voice dropout duration is greater than expected for "hw-mod reset" and "cable power off". |
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On a Cisco UBR-MC20X20 LC, cable modems (with BPI enabled) having their primary service flow on a local downstream and a secondary unicast service flow on a SPA, may lose L3 IP connectivity on the secondary service flow. |
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Mibwalk dot1dBridge using mst context does not return correct info. |
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External SNMP scripts take longer to complete when compared to Cisco UBR10-MC5X20H line cards. |
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Cable modems failing due to the bpi-plus-policy, come online(pt), but are blocked from sending l3 traffic using a per-device ACL. However, blocked cable modems are not easily discernible. |
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The Downstream Channel Descriptor (DCD) counters for DSG do not increment after a line card failover. |
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Adding line card table entries to ccsFlapEntry and ccsCmFlapEntry is taking a longer time than expected. |
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When packet classifiers are configured with IPv6, the docsIetfQosPktClassEntry MIB does not show these configured values. |
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When a PCMM Multicast Gate is deleted on an interface that was selected due to Service-Flow Attributes configured on the service class, and the interface is down at the time of deletion, the GC/GQC associated with the flow are not deleted correctly. |
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On Board Failure Logging (OBFL) Uptime application does not work on some Cisco uBR-MC3GX60V boards. |
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The customer premise equipment (CPE) does not receive dynamic multicast traffic. |
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If a cable modem undergoes vacillating attenuation, it gets into a power average enable mode (where the "*" displays in the "show cable modem" next to the power level) and then gets stuck in that mode. Even though the cable modem is at maximum power, it continues to stay in power average enable mode and never falls offline. In most cases, this results in the cable modem losing layer 3 traffic entirely without giving any notification that the modem dropped offline. |
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The Baseline Privacy Interface (BPI) index is zero for a w-online cable modem after the line card switchover. |
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The DOCSIS load balancing algorithm uses a default interval of 10 seconds, which may cause modems to be moved unnecessarily. |
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The show cable modem command output displays IPv4 addresses for single stack IPv6 cable modems after you change cable modems from IPv4 or dual stack provisioning mode. |
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Traceback observed on the Cisco UBR-MC20X20V and Cisco uBR-MC3GX60V line cards due to the Command Scheduler (KRON) configuration issue. |
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Sending echo requests via ping multiprotocol label switching (MPLS) pseudowire fails on a Cisco uBR10012 router. |
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The downstream packet is dropped instead of being forwarded by primary service flow when the downstream classifier is configured for multiprotocol label switching (MPLS) L2VPN Business Services over DOCSIS (BSoD) cable modem and the downstream packet has exp value 0 but there is no matching classifier. |
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A few CPE addresses are not displayed in the cable modem database. |
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Some downstream channels appear to be missing in the fiber node after the hardware is reset in a Cisco UBR-MC20X20V working line card. |
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Inconsistent values are displayed for the cable cm-status enable configuration for the UBR-MC20X20V and uBR-MC3GX60V line cards. |
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After performance routing engine (PRE) switchover, the IPv4 address disappears. |
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DOCSIS 3.0 service flow does not reach its minimum rate when channels are heavily congested with UDP traffic. |
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Cable modems that were marked offline after a line card switchover revert causing voice call drops. |
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ND DAD packets are still received by the CMTS even with a "drop all" filter group. |
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Secondary DEPI sessions are not configurable with third-party Edge QAM when the CMTS and EQAM are configured for DEPI Path redundancy (DPR). |
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When using "no card" and "card" commands to OIR two SPAs with different sequences, the following error message is displayed: %IDBINDEX_SYNC-3-IDBINDEX_LINK: Driver for IDB type '27' changed the Identity of interface "" without deleting the old Identity first (rc=8) -Process= "C10K SPUMONI SPA OIR process", ipl= 0, pid= 131 |
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Spurious Push Button interrupts are detected by the DTCC card. |
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Around 30% to 50% of the cable modems go offline after line card revertback and TSS error. |
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When debugging CA certificates or CM certificates, incorrect certificates are printed to the screen. |
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Layer 3 multicast module receive MLD report even if multicast authorization is denied at cable level. |
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High CPU utilization on the cable line card results in connectivity loss with the cable modem due to loss of IPC messages when writing encryption keys to the SPA card during high CPU utilization. |
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DTCC card-specific tracebacks and error messages are seen while reloading the PRE-2 on a Cisco uBR10012 router running Cisco IOS Release 12.2(32.8.10)SCE. |
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Modems are not steered to the right downstream even when restricted load balancing is configured. |
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Wideband Cable modem registered as narrowband cable modem goes offline after line card switchover. |
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Downstream service group is missing and the wideband cable modem does not reach w-online state. |
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The wideband interfaces on the 2nd and 3rd controller statistics are zero. |
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Wideband cable modems go offline after line card switchover. |
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Redundancy config-sync failures are seen for configurations under controller Modular-Cable x/y/z corresponding to the protect line card. |
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The connector mapping in run configure is cleared but the internal urm mapping is not cleared. |
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Long voice calls are dropped during line card switchover with all types of cable line cards when source verify is enabled on the bundle subinterface. |
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Downstream override is performed infinitely for narrowband cable modems. |
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The connector mapping in run configure is cleared but the internal urm mapping is not cleared. |
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The CMTS assigns cable modems to Restricted Load Balance Groups (RLBGs) to which the cable modem is not physically connected to. |
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The Cisco uBR-MC3GX60V line card crashes with the following CPU HOG error: SLOT 8/0: Dec 15 06:00:52.223 GMT: %SYS-3-CPUHOG: Task is running for (128004)msecs, more than (2000)msecs (2418/69),process = CR10K Request dispatcher |
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Redundancy config-sync failures are seen for configurations under controller Modular-Cable x/y/z corresponding to the protect line card. |
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The CMTS may crash when "no ipdr collector" is configured, collector is connected with IPDR exporter and CONNECT messages are sent, and the TCP connection is terminated by the collector. |
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Some active MAC domains do not have mapped upstream receivers. The upstream PHY device driver generates error logs on failing to find the physical port. |
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Modems do not range on a specific upstream or MAC Domain after a line card switchover or revertback. |