Release Notes for Cisco cBR Series Converged Broadband Routers, Cisco IOS XE 17.15

Caveat List

This chapter describes open severity 1 and 2 caveats and select severity 3 caveats.

The Open Caveats section lists 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 bug IDs are sorted alphanumerically.

The 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.

Note

Starting with 17.6.1a Release Notes, the Open and Resolved Caveats include common software items that may affect the Cisco cBR-8 product. The Open and Resolved Caveats include generic IOS-XE 17.9.1 software items in addition to Cisco cBR-8 items.

Open Caveats for Cisco IOS XE Dublin 17.15.1z


Identifier	Headline
CSCwo78968	After adding new data-prof, CMs goes OFFLINE, when OFDM ch configured as primary
CSCwp96634	Line card restart as the device is stuck in gcd_num
CSCwq21211	DS-JIB RECOVERABLE BG vld but BG address table vld bit is zero
CSCwq44663	US Dynamic Power Ceiling - After DBC to 10 upstream channel bonding, assigned ubg mismatch with SF ubg in 'scm serv ver' after mdm down/upgrade

Resolved Caveats for Cisco IOS XE Dublin 17.15.1z


Identifier	Headline
CSCwo24523	DS-PMA on RPHY: CCC mismatch between CBR8 and RPD
CSCwo26567	Exec changes does not retain in DPD message in cbr8 after LCPR iosd
CSCwo27005	NCP ZBL mismatch with more than 1024 zero bit-load sub-carriers
CSCwo45678	IPv6 ACL drops packets that do not match deny ACE
CSCwo56830	'show int wideband-cable' output might show decreasing values on Wi interfaces
CSCwo72081	L2VPN Enabled CMs Unable to Come Online with mdf-disable
CSCwo72445	Cable interfaces breaking after trying to reconfigure managed profiles and managed fiber-nodes
CSCwo75108	SNMP walk o/p missing few valid US entries for docsIf3CmtsSignalQualityExtExpectedRxSignalPower MIB
CSCwo87976	After linecard switchover some modems are stuck on OFDM profile 0
CSCwo94320	Timestamps are not accurate in cable monitor PCAP files
CSCwo95813	RBG Throttle does not allow RBG Creation with Rate set to 1 in SETTLING state
CSCwp12574	"Configuration buffer full' error when configuring "external-core" CLI
CSCwp21766	Modem offline issue during power level adjustment with dynamic upstream power monitor
CSCwp21925	Modems stuck in upstream-partial mode after LC switchover
CSCwp29579	RPHY:SUP reload after LCHA and "no cable rpd"
CSCwp59018	UP Multiplier Not Enforced After MDD Recovery CM-Status Event
CSCwp62845	Disabling prof-zero-fail config changes ofdm-rf-change-trigger percent and count configs
CSCwp66197	rphy_mcast_ds_rfchan table record limit causes REPM to fail
CSCwp97565	CM Enters reject(c) state when sending DHQoS CM Capability TLV
CSCwq36513	Optimization to prevent persistent flow control condition on OFDM/WB channels in DSJIB during DSPMA operations

Open Caveats for Cisco IOS XE Dublin 17.15.1y


Identifier	Headline
CSCwo24523	DS-PMA on RPHY: CCC mismatch between CBR8 and RPD
CSCwo26567	Exec changes does not retain in DPD message in cbr8 after LCPR iosd
CSCwo27005	NCP ZBL mismatch with more than 1024 zero bit-load sub-carriers
CSCwo45678	IPv6 ACL drops packets that do not match deny ACE
CSCwo55245	UTSC capture does not show data beyond 160Mhz with full traffic on ICCAP CLC
CSCwo56830	'show int wideband-cable' output might show decreasing values on Wi interfaces
CSCwo72081	CMs Unable to Come Online with mdf-disable
CSCwo75108	SNMP walk o/p missing few valid US entries for docsIf3CmtsSignalQualityExtExpectedRxSignalPower MIB
CSCwo78968	After adding new data-prof, CMs goes OFFLINE, when OFDM ch configured as primary
CSCwo87976	After linecard switchover some modems are stuck on OFDM profile 0

Resolved Caveats for Cisco IOS XE Dublin 17.15.1y


Identifier	Headline
CSCwh79605	unconfiguring and configuring DS controller prof with OFDM causes D31 CMs showing p-online
CSCwk32180	During busy times DPS can adversely affect BW-REQ processing performance
CSCwk79871	Unable to achieve max const DS tx rates above 8Gbps w 2x100G DPIC and a D4.0 modem
CSCwm54727	SW wrongly ignores stuck event during HUB stuck issue happens
CSCwn11130	DS PMA: Drop issue with increase in intensity of 4 ofdm channels/downgrade/mixed-mod
CSCwn41128	DS PMA: Exec CLI issues related to LCHA/LCPR scenarios
CSCwn43877	Command "show cable modem <> asf" Does Not Work with IP Address Input
CSCwn53964	DS PMA: Override values updated with exec commands not retained after SUPHA
CSCwn70490	L2-DOCSIS: cbr8 rcc/mdd/fiber-node dcid mismatch with cable downstream-channel-id automatic
CSCwn71977	DS PMA: When commit override is same as running config, ccc is getting incremented
CSCwn75978	DS PMA: Only modulation-default overriden with full channel width exec override
CSCwn76720	RBG Throttle nb-to-rbg-rate value of 1 not working
CSCwn78386	DS-PMA on RPHY Scale test(200+ CM) : CM movement issue on modify/add data-profile
CSCwn83045	cwerr downgrade iuc after adding in modulation profile not updated in show cmd after rxmer poll
CSCwn85381	DS-PMA: Modem movement not happening through exec when working in fresh system
CSCwn87323	DS-PMA: Ten maximum exec staged override commands per data profile per channel allowed
CSCwn88518	DS-PMA: RxMer reassess optimization at modem scale
CSCwn90574	DS-PMA: Override configuration cleared on OFDM channel after shutting down another channel
CSCwn90763	Supervisor unexpected reload with AQM enabled
CSCwn91334	DBC Done for IUC is missing in Timeline Dynamic CLI
CSCwn91911	LC-G2-R Linecard Reload Due to Large US PHY Log File in /tmp/cc
CSCwn93518	cBR8 - Slow pending-ack-update clearing of existing objects
CSCwn99904	DS Resil moves CMs to NB: Reporting both 32ch and 40ch Pools Exhausted
CSCwo08275	Unmatched RPD configuration: DevID 1, should be 0
CSCwo20767	Entries in entAliasMappingIdentifier OID missing

Open Caveats for Cisco IOS XE Dublin 17.15.1x


Identifier	Headline
CSCwh79605	unconfiguring and configuring DS controller prof with OFDM causes D31 CMs showing p-online
CSCwk79871	Unable to achieve max const DS tx rates above 8Gbps w 2x100G DPIC and a D4.0 modem
CSCwn11130	DS PMA: Drop issue with increase in intensity of 4 ofdm channels/downgrade/mixed-mod
CSCwn41128	DS PMA: Exec CLI issues related to LCHA/LCPR scenarios
CSCwn43877	Command "show cable modem <> asf" Does Not Work with IP Address Input
CSCwn53964	DS PMA: Override values updated with exec commands not retained after SUPHA
CSCwn70490	L2-DOCSIS: cbr8 rcc/mdd/fiber-node dcid mismatch with cable downstream-channel-id automatic
CSCwn71977	DS PMA: When commit override is same as running config, ccc is getting incremented
CSCwn75978	DS PMA: Only modulation-default overriden with full channel width exec override
CSCwn76720	RBG Throttle nb-to-rbg-rate value of 1 not working
CSCwn78386	DS-PMA on RPHY Scale test(200+ CM) : CM movement issue on modify/add data-profile
CSCwn83045	cwerr downgrade iuc after adding in modulation profile not updated in show cmd after rxmer poll
CSCwn85381	Modem movement not happening through exec when working in fresh system
CSCwn87323	Ten maximum exec staged override commands per data profile per channel allowed
CSCwn89231	OFDM channel for CMs goes down when modifying data-profile config while channel up.
CSCwn90574	Override configuration cleared on OFDM channel after shutting down another channel

Resolved Caveats for Cisco IOS XE Dublin 17.15.1x


Identifier	Headline
CSCwj94884	cempMemPoolUsed cannot be collected from active CLCs by SNMP
CSCwm43427	MaxRate incorrect for mixed modulation OFDM channels
CSCwm45781	"no cable us-scheduler bwr-drop ..." has no effect
CSCwm59957	ofdma-prof-mgmt downgrade partial-hold-down 0, but able to see partial hold-down timer
CSCwm64082	CBR8: Transmit Peak power field for D30 modems to be upd correctly in scm phy us-pwr < ref > cli
CSCwm66771	Certain CM type won't complete REG and gets stuck an init(o) before restarting the cycle
CSCwm74010	Telemetry subscription Format Failure on SNMP ifmib / mdt
CSCwm75107	childless-delete-objects of active SUP might prevent new CPEs from getting an IP address
CSCwm92427	cable downstream ofdm-flow-to-profile profile-data < ID > mac-address < mac > command not working
CSCwm95003	DS traffic to D4.0 modems is sent on 2/4 OFDM channels when prof0 used on higher index OFDM channels
CSCwn01512	D31 CMs \"show cable modem < mac > flap\" Displays Wrong P-Adj Count
CSCwn12197	PNM RxMER capture not working after 2nd time LCPR restart through IOSD restart
CSCwn31184	DS D3.1 wcm using ofdm WB select rfch 12 instead of 11
CSCwn42918	OFDMA channel may operate in TaFDM mode despite exclusion band

Open Caveats for Cisco IOS XE Dublin 17.15.1w


Identifier	Headline
CSCwh79605	unconfiguring and configuring DS controller prof with OFDM causes D31 CMs showing p-online
CSCwk79871	Unable to achieve max const DS tx rates above 8Gbps w 2x100G DPIC and a D4.0 modem
CSCwm43427	MaxRate incorrect for mixed modulation OFDM channels
CSCwm45781	"no cable us-scheduler bwr-drop ..." has no effect
CSCwm59957	ofdma-prof-mgmt downgrade partial-hold-down 0, but able to see partial hold-down timer
CSCwm64082	CBR8: Transmit Peak power field for D30 modems to be upd correctly in scm phy us-pwr <ref> cli
CSCwm75107	childless-delete-objects of active SUP might prevent new CPEs from getting an IP address
CSCwm92427	cable downstream ofdm-flow-to-profile profile-data < ID > mac-address < mac > command not working

Resolved Caveats for Cisco IOS XE Dublin 17.15.1w


Identifier	Headline
CSCwm00974	Inconsistent stats update in scm <mac> timeline dynamic CLI
CSCwm74010	Telemetry subscription Format Failure on SNMP ifmib / mdt
CSCwk75758	SUP reload @rphy_cfg_malloc_tmp_entry during flapping CIN network
CSCwm06090	LLD flow shows qDrops which are rDrops in reality
CSCwk78059	Stale AQP Entries on CLC after LCHA
CSCwm11648	wideband int with dynamic downstream bonding group(inactive) was shutdown and resulted in SUP reload
CSCwm01320	R1/0: pistisd: Assertion failed (pistisd crash)
CSCwk97606	CBR: %CMTS_INFRA-3-NORES_BG_EXCD: ubr_dmp_resource_alloc:No More Resources:BG-Pool 40-Chan:pool-id
CSCwm29800	cBR-8 - OFDM PLC channel interrupted when SC-QAM is suspended by resiliency
CSCwk98902	cBR8 - IOSd RP memory leak
CSCwk75945	cpp/fman unexpected reload due to PTP requests with invalid UDP length
CSCwk73972	US-PMA: broker state shows up even without the bootstrap address configured
CSCwk66365	RxMer UCID IUC not showing in Scm <mac> timeline dynamic
CSCwk72762	Traceback @ 'SNMP bg sync collect proc' after clear all modems
CSCwm09837	AQP lookup failing at initial CM registration
CSCwk82376	TDL leak @masked_8bit_range_param during CM flapping if cm config file includes tos classifier
CSCwm29699	Linecard unexpected reload with "ELEMENT_TMPFS_WARNING" logs
CSCwk66704	d3.0 upstream static LB not balanced when ofdma configured
CSCwk88643	BDT TFTP path garbage characters when URI is “tftp://x.x.x.x” in CMTS in Version 17.12.01x
CSCwk77077	Race condition leads to RCC reconciliation accessing freed RCC data
CSCwk41748	Tx msgs is greater than Prod Msgs but Tx retry counter 0 when kafka cluster connection flapping
CSCwk98365	%RF-3-NOTIF_TMO: Notification timer Expired for RF Client: CCM RF(82) and Active SUP reload
CSCwm35985	CBR8: DS-JIB RECOVERABLE [Enq:Low-Pri:IPH header says BG vld but BG address table vld bit is zero
CSCwk98659	SYS-3-CPUHOG: ,process = UBR_DP ACFE Notify Process
CSCwk87889	US: CMs are not using 2 OFDMA channels, path-selection is not matching MD definition
CSCwk43319	%CBR-4-NOCFGFILE: Cannot read modem config file - constant errors
CSCwm01048	input rate shows double in bundle interface and MD interface
CSCwj35913	show stby port rpd online / summary does not work

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