Restrictions and Caveats in Cisco IOS XE 3.18S Releases

This chapter provides information about restrictions and caveats in Cisco IOS XE 3.18S releases.

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Noteblank.gif We recommend that you view the field notices for the current release to determine whether your software or hardware platforms are affected. You can access field notices at http://www.cisco.com/en/US/support/tsd_products_field_notice_summary.html.

This chapter contains the following sections:

Restrictions in Cisco IOS XE 3.18S Releases

  • In Cisco IOS XE Release 3.18S, PTP packets carrying MPLS labels are not supported in the ingress or egress direction on the RSP3 module.
  • This is applicable only to Cisco ASR 903 RSP2 module. Traffic is dropped when packets of size 64 to 100 bytes are sent on 1G and 10G ports:

–blank.gif For 64-byte packets, traffic drop is seen at 70% and beyond of the line rate.

–blank.gif For 90-byte packets, traffic drop is seen at 90% and beyond of the line rate

–blank.gif For 95-byte packets, traffic drop is seen at 95% and beyond of the line rate.

Traffic is dropped when:

–blank.gif Traffic is sent on a VRF interface

–blank.gif Traffic is sent across Layer 2 and Layer 3

However, traffic is not dropped when the packet size is greater than 100 bytes, even if the packets are sent bi-directionally at the line rate.

Caveats in Cisco IOS XE 3.18S Releases

Caveats describe unexpected behavior. Severity 1 caveats are the most serious caveats. Severity 2 caveats are less serious. Severity 3 caveats are moderate caveats and only select severity 3 caveats are included in this chapter.

This section describes caveats in Cisco IOS XE 3.18S releases. The following information is provided for each caveat:

  • Symptom—A description of what is observed when the caveat occurs.
  • Conditions—The conditions under which the caveat has been known to occur.
  • Workaround—Solutions, if available, to counteract the caveat.

The Dictionary of Internetworking Terms and Acronyms contains definitions of acronyms that are not defined in this document:

http://docwiki.cisco.com/wiki/Category:Internetworking_Terms_and_Acronyms_(ITA)

Bug Search Tool

The Caveats section only includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a particular bug you must use the Bug Search Tool.

Use the following link to access the tool: https://tools.cisco.com/bugsearch/search.

You will be prompted to log into Cisco.com. After successful login, the Bug Search Tool page opens. Use the Help link in the Bug Search Tool to obtain detailed help.

Caveats

The following sections describe the open and resolved caveats in 3.18S Releases:

Open Caveats—Cisco IOS XE Release 3.18.3S (Cisco IOS Release 15.6(2)S3)

There are no open caveats for the Cisco ASR 903 Series Router running Cisco IOS XE Release 3.18.3S.

Resolved Caveats—Cisco IOS XE Release 3.18.3S (Cisco IOS Release 15.6(2)S3)

Identifier
Description

CSCvc14648

RSP3: LB/FRR/Adj obj download errors after link flap

CSCvc29475

RSP3:Wrong path selected for MPLS Label results in traffic failure

CSCvb72640

MET Entries getting exhausted

CSCvb71337

ASR9xx after config changes to service instance - misclassified QoS on egress into class-default

CSCvb61016

RSP3: BFD Flap on 8x10G, performing SSO on Peer Node

CSCvb96905

Serial Path in ifTable and min and oper status stay up after cable unplug

CSCuz95664

ASR900: OC3 IM Runs Out of FIFO Buffer on Reassembling MLPPP Fragments

CSCux45450

ASR900: OC3 IOMD CPUHOG on SOAK Test of SONET Shut and No Shut

CSCuw31345

RSP1: OC3 IOMD Crash on Repeated SONET shut and no shut

CSCvb01725

LEAPSEC: BC in holdover is not sending the last learnt utcOffset

CSCuz49602

TDM-ST: RSP2 adj manager crash observed after OIR on TDM T1E1 IMs

CSCvb63314

Traffic not egressing out on AC after Standby PW became Active PW

CSCvb49400

RSP1:Back to back failed because of either Invalid adjacency in PD or Incomplete adjacency in PD

CSCva14704

cem xconnection is down and tracebacks when changing dejitter buffer

CSCvb61160

RSP3: HW-LB: L3VPN - Path is preselected though PIC is enabled

CSCuy03441

RSP3:Data path failure is seen with Inter-AS option AB

CSCuz45306

POS MRAPS high convergence time with Protect Active Power Cycle

Open Caveats—Cisco IOS XE Release 3.18.2S (Cisco IOS Release 15.6(2)S2)

 

Identifier
Description

CSCuz95664

ASR900: OC3 IM Runs Out of FIFO Buffer on Reassembling MLPPP Fragments

CSCux45450

ASR900: OC3 IOMD CPUHOG on SOAK Test of SONET Shut and No Shut

CSCuw31345

RSP1: OC3 IOMD Crash on Repeated SONET shut and no shut

CSCvb01725

LEAPSEC: BC in holdover is not sending the last learnt utcOffset

CSCuz49602

TDM-ST: RSP2 adj manager crash observed after OIR on TDM T1E1 IMs

CSCvb63314

Traffic not egressing out on AC after Standby PW became Active PW

CSCvb49400

RSP1:Back to back failed because of either Invalid adjacency in PD or Incomplete adjacency in PD

CSCva14704

cem xconnection is down and tracebacks when changing dejitter buffer

CSCvb61160

RSP3: HW-LB: L3VPN - Path is preselected though PIC is enabled

CSCuy03441

RSP3:Data path failure is seen with Inter-AS option AB

CSCuz45306

POS MRAPS high convergence time with Protect Active Power Cycle

Resolved Caveats—Cisco IOS XE Release 3.18.2S (Cisco IOS Release 15.6(2)S2)

 

Identifier
Description

CSCuz95621

ASR900: OC3 IOMD Crash on RP SSO while MLPPP Scale Sessions Flap

CSCuw72998

RSP1: Large Number of 3072-byte Memory Leaks in ASR1000 SPA TDL process

CSCuy96309

IOT: ASR900-IMA14A/S performance issue

CSCuz67645

EFP stats not incrementing for MPLS packets in imposition

CSCuz71631

ASR903 drop label traffic in certain range with more than 2 label stacks

CSCva21655

BDI MPLS MTU cannot be set more than 1500

CSCva39555

MPLS Forwarding Issue on ASR903

CSCuz67921

OSPF hello over sham link is not punted for de-agg case

CSCux94951

Invalid CF set by intermediate slave as ptp pkt traverses 1g to 10g

CSCvb49938

UDP packets are getting corrupted in MPLS De-Agg case

CSCuz78209

RSP3/QOS: Ingress policer drops are accounted at egress queue level

Open Caveats—Cisco IOS XE Release 3.18.1S (Cisco IOS Release 15.6(2)S1)

 

Identifier
Description

CSCuy35875

Tx bias low alarm on 100G CPAK 100GE LR4 optics

CSCuz64141

x21 cesop could not pass traffic with 64Kbps baud rate

Resolved Caveats—Cisco IOS XE Release 3.18.1S (Cisco IOS Release 15.6(2)S1)

 

Identifier
Description

CSCuz02389

label programmed does not get properly when the value is beyond 65535

CSCuy27433

RSP1: Imposition Traffic TX Out Standby PW on IGP Delete Reconfig

CSCuz39929

ASR900 memory leak in SSFPD code

CSCuy58595

XFP-10GZR-OC192LR XFP recognized @ 100Mbps

CSCuy81971

ZR sfp+ link going down in remote side with sso, in 2X10gig im

Open Caveats—Cisco IOS XE Release 3.18S (Cisco IOS Release 15.6(2)S)

 

Identifier
Description

CSCuw67453

32T1E1:Shut on CEM group not results in Serial Interface Protocol down

CSCuw86907

907:Act Resets with CMAND crash on downgrading the IM FPGA using IOS

CSCux37882

On routed Port, 2nd time population of ARP entries lead to error object

CSCux48983

SR: RSP2 sends out corrupted pkts with UMMT TI-LFA 5 label push scenario

CSCux53766

CEMoUDP:Circuits are not Not up if we configure CEM for full scale.

CSCux55714

RSP3 : OAMP generating packets even after disabling cfm globally

CSCux73183

G.8275.1 T-BC: Allow simultaneous i/p and o/p 1PPS with Virtual Port

CSCux76373

DSCP value is not set correctly at IP header which carries PTP packet

CSCux87797

MLDPv6 : Crash @ nmpls_rlist_create_hw_fid

CSCux91894

ASR9xx iomd memory leak

CSCux93941

OC3:CEM config are lost after setting boot host command and reload

CSCux94962

ToD: Cisco and ubx formats are not working

CSCux96664

Phase2 IM: HBC-907: Traceback seen after box comes up after a reload

CSCuy00543

RSP3 : Observing cfm errors due to missing fields in ccm

CSCuy00846

RSP3 : Traffic drop seen on one interface on shutting another int

CSCuy08188

RSP3: frr obj download error on standby RSP on upgrade to latest XE318

CSCuy09202

MCAST THS:IPv4 and IPv6 Multicast traffic doesn't flow over VPLS

CSCuy27212

show platform hardware pp active int all queue counters are not updating

CSCuy29403

SR Punt from incomplete ADJ reaches ROUTING THROTTLE Q but not PI module

CSCuy73110

After core IM-OIR CFM traceroute is not working between CEs

Resolved Caveats—Cisco IOS XE Release 3.18S (Cisco IOS Release 15.6(2)S)

 

Identifier
Description

CSCun30277

"show platform hardware pp active feat cef database prefix" CLI remove

CSCut16038

Crete: OC master does not output PTP based on TOD input

CSCuu28316

ASR903: IOSd WATCHDOG Crash on Bootflash File Lookup on SNMP WALK

CSCuv57383

RSP1: In rare situations, mpls is not enabled in hardware after upgrade

CSCuw26295

RSP1: MR-APS Protect Active RSP SSO Convergence Time 2 seconds

CSCuw38880

Unable to create the 6th MTU on ASR-903

CSCuw39821

ASR903 acting as MVPN 'PE' device duplicates multicast traffic

CSCuw57281

Changing MTU doesn't reflect in HW

CSCuw59221

RSP1-CEMoUDP-ACR: Serial interface shows up/down after reload

CSCuw70038

RSP1: IOMD Crash on Egress IPv4 Flows Modify on MLPPP Sessions Flaps

CSCuw95283

ASR903: CEMoUDP Packets Are Not Triggering ARP Resolution

CSCux60630

RSP2 & Pegasus:Modifying MTU value fails in Multilink interface

CSCux62888

RSP2: 126 Cylon EAIDs Leaked when 126 MLPPP Bundles Flapped

CSCux64454

P2MP: Memory gets depleted while switching form multiple MP2MP to P2MP

CSCux79666

BFD Flap on ASR 903

CSCuy09081

RSP2: MLP Ingress Traffic Fail as InL3IDC Not Programmed on SONET Flaps