Release Notes for the Cisco 6100 Series System Release 3.0.0

System controller module software

9651-001-40

Network interface module software

9601-001-34

DS3 STM¹ software

9601-005-13

CAP ATU-C module software

9101-001-29

DMT-2 ATU-C module main software

9101-003-08

DMT-2 ATU-C module DSP² software

5385-579-97

STU-C module software

9101-008-04

Flexi DMT module software

9101-005-08

Flexi CAP module software

9101-004-10

LIM³ controller module software

9651-002-12

RDF⁴

6000-300-34A

3.0.0

Yes

Yes

Yes

Yes

Yes

Yes

2.4.1

No

Yes

Yes

No

No

No

2.4.0

No

No

Yes

No

No

No

2.3.5

No

No

No

Yes³

Yes

Yes

2.3.0

No

No

No

No

Yes³

Yes

2.2.1

No

No

No

No

Yes

Yes

2.2.0

No

No

No

No

No

Yes

3.0.0

Yes

Yes

Yes

Yes

Yes

Yes

2.4.1

No

Yes

Yes

Yes

Yes

Yes

2.4.0

No

No

Yes

Yes

Yes

Yes

2.3.5

No

No

No

Yes³

Yes

Yes

2.3.0

No

No

No

No

Yes³

Yes

2.2.0

No

No

No

No

No

Yes

Cisco 6130²

Yes

Yes

Yes

No

Cisco 6100³

Yes

Yes

No

Yes

Dual-port CAP ATU-C

No

Yes

No

No

No

Yes

Yes

Dual-port DMT-2 ATU-C^3,4

Yes

Yes

Yes

No

No

No

Yes

Quad-port flexi ATU-C⁵

Yes

Yes

Yes

No

No

No

Yes

Quad-port STU-C^6,7

No

No

Yes

No

No

No

No

Quad-port flexi (CAP)

• Cisco 678 CBOS 2.3.0
  
  
• Cisco 675 CBOS 2.3.0
  
  
• Cisco 675 CBOS 2.2.0
  (no 17 kilobaud/68 kilobaud)
  
  
• Cisco 675 CBOS 2.1.0
  (no 17 kilobaud/68 kilobaud)
  
  
• Cisco 675 CBOS 2.0.1
  (no 17 kilobaud/68 kilobaud)
  
  

Cisco 605 PCI 210 Production

Quad-port flexi (DMT)

Cisco 678 CBOS 2.3.0

None

Quad-port flexi
(DMT G.lite)

Cisco 678 CBOS 2.3.0

None

Dual-port CAP

• Cisco 678 CBOS 2.3.0
  
  
• Cisco 675 CBOS 2.3.0
  
  
• Cisco 675 CBOS 2.2.0
  (no 17 kilobaud/68 kilobaud)
  
  
• Cisco 675 CBOS 2.1.0
  (no 17 kilobaud/68 kilobaud)
  
  
• Cisco 675 CBOS 2.0.1
  (no 17 kilobaud/68 kilobaud)
  
  

Cisco 605 PCI 210 Production

Dual-port DMT (ADI)

Cisco 677

Cisco 627

Dual-port DMT G.lite (ADI)

Not Supported

None

Quad-port STU-C

Cisco 673 (Ethernet to DSL)

Cisco 633 (Frame Relay to DSL)

Dual-port DMT-2 ATU-C and
quad-port STU-C

Not supported

Supported

Dual-port DMT-2 ATU-C and
dual-port CAP ATU-C

Not supported

Not supported

Dual-port CAP ATU-C and
quad-port flexi ATU-C (DMT mode)

Not supported

Not supported

Dual-port CAP ATU-C and
quad-port flexi ATU-C (CAP mode)

Not supported

Not supported

Dual-port DMT-2 and
quad-port flexi ATU-C (DMT mode)

Not supported

Not supported

Dual-port DMT-2 and
quad-port flexi ATU-C (CAP mode)

Not supported

Not supported

Dual-port CAP ATU-C and
quad-port STU-C

Not supported

Not supported

Quad-port flexi ATU-C (CAP mode) and quad-port flexi ATU-C (DMT mode)

Supported

Supported

Quad-port flexi ATU-C (CAP mode) and quad-port STU-C

Not supported

Supported

Quad-port flexi ATU-C (DMT mode) and quad-port STU-C

Not supported

Supported

CAP/flexi ATU-C

(CAP line code)

136 kilobaud

1088, 952, 816, 680, 544, 408, 272 91

68 kilobaud

544, 476, 408, 340, 272, 204, 136, 46

17 kilobaud

136, 119, 102, 85, 68, 51, 34, 12

DMT-2 ATU-C

[32 - 864] @ 32 kbps increments

[32 - 8032] @ 32 kbps increments

Flexi ATU-C (DMT-2 line code)

Disabled

[32 - 864] @ 32 kbps increments

[32 - 8032] @ 32 kbps increments

Enabled

[32 - 512] @ 32 kbps increments

[64 - 1536] @ 32 kbps increments

Line Rate

Supported

Supported with caveat: Rarely CPE retrains at 952 instead of 1088 kbps upstream. (CSCdp85772)

Margin

Caveat: At unusually large margins, (greater than nine), the actual margin is less than provisioned. (CSCdp84274)

Caveat: At unusually large margins, (greater than nine), the actual margin is less than provisioned. (CSCdp84274)

PSD¹

Supported

Supported

Reed-Solomon

Supported

Supported

136 kilobaud downstream

Supported

Supported

17 kilobaud and 68 kilobaud upstream

Supported

Supported

Line Rate

Supported with caveat: Cannot train upstream @ 128, 256, 512, 640, 768 kbps (CSCdm59472 and CSCdm81817)

Supported

Margin

Supported with caveat: Cannot set margin below 6. (CSCdm43638)

Supported

PSD

Supported with caveat: Always use default setting of -40 dbm/Hz. (CSCdm36644)

If you select the -46 dbm/Hz or the-49 dbm/Hz setting, the module uses the default setting of -40 dbm/Hz. (CSCdm69047)

Supported with caveat: All settings are mapped to full power (except -49 dbm/Hz) and will automatically attenuate down to a lower power when necessary.

Overhead Framing

Supported. See below for the following settings:

0—Full, Asyncronous

1—Full, Syncronous

2—Reduced, Separate

3—Reduced, Merged

Supported with caveat:

3—Reduced, Merged

Modes 0, 1, and 2 are not supported at this time. (CSCdp39444)

Training Mode

Supported with caveat:
Standard only (CSCdm36621)

Supported with caveat:
Standard only (CSCdp53139)

Interleaved Delay

Supported with caveat:
0, 250, 500, 1 K, 2 K, 4 K, 8 K microseconds work, all other settings equal maximum. (CSCdm76074)

Supported with the following settings:

250, 500, 1 K, 2 K, 4 K, 8 K, 16 K, 32 K, 64 K microseconds.

FEC¹ Redundancy

Not supported (CSCdm23668)

Supported with the following settings:

0, 2, 4 ,6, 8, 12, 14, 16 bytes

Trellis Code

Supported with caveat: Trellis enabled causes data problems. (CSCdm69068)

Supported with caveat: Enable Trellis for rates over 7.6 Mbps (CSCdp67298)

Bit Swapping

Not supported (CSCdm77285)

Not supported (CSCdp39437)

Latency Path

Supported with caveat:

Fast = Interleaved at 0 Delay.

(CSCdp27472)

Supported

CSCdp12216

Flexi CAP port 1 & 3, 2 & 4 pairing loss of packets.

Impact: In NI-1 systems, each card is allocated two 9.1 Mbps data streams by the network interface. When quad-port cards are used, one network interface data stream is shared by ports 1 and 3 and the other is shared by ports 2 and 4. This means that the aggregate downstream rate of two ports that are sharing a network interface data stream cannot exceed 9.1 Mbps without data loss in the network interface.

Workaround: None.

CSCdp36370

Flexi module retrains on all four ports simultaneously.

In early runs of EDT, the card exhibits this behavior, but it cannot be reproduced after voltage and temperature margining was controlled properly.

Impact: The line card will automatically retrain when this event happens. If this occurs, it interrupts data traffic only during retrain time, which is approximately ten seconds. All errors are recoverable through layer 3.

Workaround: None.

CSCdp37068

Flexi cards (both CAP & DMT) occassionally download their images twice before they can come up.

Impact: Very minimal. This does not cause any problems, other than taking twice the amount of time that it normally takes to download an image.

Workaround: None. Wait until the flexi card comes up after the second download.

CSCdp39437

Bit swapping for the flexi DMT ATU-C module is not supported in this release of the GlobeSpan firmware.

Impact: Selecting bit swapping from the subscriber option menu will have no effect.

Workaround: None.

CSCdp39444

Framing modes 0, 1, and 2 for the flexi DMT ATU-C module are not supported in this release of the GlobeSpan firmware.

Impact: User will not see the effect of selecting the framing mode 0, 1 and 2.

Workaround: Select mode 3 only.

CSCdp53139

The flexi DMT ATU-C module does not support Fast Train in G.lite mode.

Impact: Fast retrain is not supported in the current GlobeSpan firmware. Selecting fast train from the subscriber options menu will have no effect.

Workaround: None.

CSCdp53238

Flexi DMT problems with 0 loop, 0 delay

Impact: Running on loops under 1.8 kft with trellis or Reed-Solomon disabled can lead to data loss due to CRC errors and to dropped links.

Workaround: To correct this behavior, enable trellis and Reed-Solomon at under 1.8 kft line lengths.

CSCdp57414

CAP cannot train upstream @ 1088 with margin = 6/6

Investigation of this problem seems to indicate a difference in the CPE transmit power depending on what version of CBOS/GSI image is running on the CPE.

• With a Cisco 675 CPE running GSI version 3.0 for starlet, with wireline simulator set to 3 kft/26 gauge and the upstream margin at 6, the CPE transmit power is 11.3 dB. This version will train at 1088 upstream 100 percent of the time.
  
  
• With a Cisco 675 CPE running GSI version 3.2 for starlet, with wireline simulator set to 3 kft/26 gauge and the upstream margin at 6, the CPE transmit power is 4.8 dB. This version will only train at 1088 upstream 40 percent of the time. The rest of the time it will train to 952 upstream.
  
  
• With a Cisco 678 CPE running GSI version C23 for CAP on NOVA, with wireline simulator set to 3 kft/26 gauge and the upstream margin at 6, the CPE transmit power is 6.4 dB. This version will only train at 1088 upstream 40 percent of the time. The rest of the time it will train to 952 upstream.
  
  

Impact: The line card still trains and is only dropping down one rate.

Workaround: None.

CSCdp70154

Flexi has intermittant single-port retrains (CAP or DMT).

Impact: When CPE devices train up against the flexi card, on some ports they may train twice in rapid succession before they stay trained.

Workaround: No corrective action is necessary because the units automatically retrain and then stay trained. The user is given the impression that the line has taken longer than usual to train.

CSCdp78366

In the OC-3 network interface, if previously connected CPEs are powered off, the Tx and Rx cell counts as shown by ViewRunner or through the network interface keep incrementing.

Impact: The cell counts shown might not indicate that of the actual traffic.

Workaround: None.

CSCdp79172

TFTP failed after clearing NVRAM and Flash. Sometimes when the system controller is booting it displays an error message "TFTP: de_open failed for DEV_TFTP Error Code: 0x10060002". This message is displayed when the system controller does not get a response from the TFTP server (when there are problems in the network). However, the system controller would recover from the failure if the network becomes stable and the TFTP server is able to communicate with it.

Impact: Because the system controller recovers from the failure, the TFTP succeeds in the next attempt. The impact is a slight delay while booting.

Workaround: None.

CSCdp80537

Minor alarms appear when the board is in normal condition after software upgrade.

Minor alarms appear when the SDSL modules are in normal condition after changing the right chassis from CAP/DMT-2 to SDSL and upgrading to 3.0.0. This problem was observed when the 6100 system was upgraded using ViewRunner for HP OpenView, after clearing the 6100 system NVRAM and flash.

Impact: Customers will not be able to deactivate the minor alarms.

Workaround: None.

CSCdp81373

System controller is not up after pulling power off/on 6100 during TFTP upgrade. If power is switched off and the Ethernet connection is also pulled down when the system controller is doing a TFTP of images while upgrading, the system controller will not come up after the power is switched on.

Impact: None. This is a stress-test case and not a real-world scenario.

Workaround: System controller has to be rebooted from the system controller boot prompt.

CSCdp86453

Dual-port CAP & flexi CAP fail to train to a valid rate if provision invalid.

2xCAP and flexi CAP fail to train to a valid rate when provisioned for an invalid upstream or downstream rate. Previous revisions when provisioned for an invalid rate, would use the closest valid rate for the provisioned rate.

Impact: Because this problem only occurs if an invalid rate is provisioned and an invalid rate cannot be set from ViewRunner, the impact of this DDTS should be low.

Workaround: Provision with valid rates.

CSCdp84274

Actual margins less than provisioned margins.

If the line card is provisioned for an upstream or downstream margin of 10, 11, or 12 the actual upstream or downstream margin may be as low as 9. This defect will be fixed in the next release.

Impact: The highest guaranteed provisioned upstream or downstream margin is 9 even though the line card is supposed to be able to provision up to 12. This affects both the flexi CAP and 2xCAP line card for Release 3.0.0.

Workaround: None.

CSCdp84935

Occasionally a flexi CAP ATU-C module port may drop train 1 to 2 seconds after it has successfully trained. It seems to always retrain to the same rates on the second try.

Impact: If the port drops train and then retrains, it could add 6-10 seconds to the total train time. The cause of this problem is still under investigation, so the solution/fix is still unknown.

Workaround: None.

CSCdp85772

Intermittently, two (out of 112) flexi CAP ATU-C module ports do not train at 1088 after the system controller is reset.

Impact: The flexi CAP ATU-C module trains at a lower rate than 1088.

Workaround: None.

CSCdp85795

Flexi line ports drop train during overnight traffic.

With a DSLAM with 28 flexi CAP line cards installed, if all 112 ports are trained up and data is passed through all the ports throughout the night, 2 or more ports will drop train before morning.

Impact: Because the ports will retrain to the correct rate again and the lost cells can be recovered with error handling, this is a low severity DDTS that will be investigated and fixed in the next release.

Workaround: Error handling should automatically recover any lost cells when the port retrains.

CSCdp87713

Dual-port CAP line card showing actual downstream transmit PSD as -38 when provisioned for -49. The actual transmit PSD should be less than or equal to the provisioned transmit PSD mask.

Impact: This is still being investigated but it looks like it is a reporting problem of the actual transmit PSD. The reported actual PSD might be incorrect sometimes when provisioned for very low power.

Workaround: None.

CSCdp88314

Default Q priority in subscr PVC is voice instead of data.

While creating a PVC for a subscriber without passing value for lrSubscrPvcQPriority, the default value assigned by the node software is QP1 instead of QP3 as mentioned in the MIB. This is seen only while using MIB browsers other than ViewRunner.

Impact: None. Because Viewrunner always assigns the default value as qp3, the user is not affected by this.

Workaround: Set the value for lrSubscrPvcQPriority to the correct queue priority while creating the PVC.

CSCdp88713

Flexi DMT module trains to lower rate than provisioned when the interleaved delay is set to 250 microseconds.

Configuring the interleave delay to be 250 microseconds decreases the maximum achievable upstream rate to 736-768 kbps (depending on other configuration options).

Impact: If the subscriber is provisioned for an upstream rate above 736 and an interleave delay of 250 microseconds, the provisioned rate may not be achievable.

Workaround: Select a higher value for the interleave delay.

CSCdp91694

Alarm severity levels for certain events are incorrect.

The following alarms have incorrect severity levels:

• DS3:102: PLCP loss of frame error detected—Minor (should be Critical)
  
  
• OC3:60: Loss of frame condition—Info (should be Critical)
  
  
• OC3:48: Loss of cell delineation—Info (should be Critical)
  
  
• OC3:55: Auto protection switch byte is corrupted 3 of 12 bytes—Minor (should be Info)
  
  
• OC3:54: Auto protection switch—Critical (should be Info)
  
  

Impact: The user will see alarms with incorrect severity levels.

Workaround: None.

CSCdk43651

LIM¹ Controller SMB failure over Temperature and Humidity.

Impact: After a temperature transition from +50C at 10 percent humidity to +70C at 50 percent humidity, the LIM Controller will stop responding to the System Monitor on the system controller over the external SMB Bus.

Workaround: There is no workaround for this problem.

CSCdk46493
CSCdk49143

When four VCs are sending data simultaneously and are configured on one port, the bandwidth is not distributed fairly.

Impact: If four VCs are configured for one line port and sending data simultaneously, the bandwidth for some of the VCs is not distributed fairly among each of the VCs. Users on some of those VCs may not get their provisioned bandwidth.

Workaround: There is no workaround. The network interface does not perform per-VC queuing.

CSCdk53830

The counter "Failed Trains due to nontimer enabled CPE" not visible while the system is in Direct Connect mode.

Impact: If the system is in Direct Connect mode, you do not know how many times a line port failed to train because the CPE gear is not timer enabled.

Workaround: There is no workaround.

CSCdk53848

Life Line not preserved when POTS splitter card is removed.

Impact: When the POTS card is removed, phone service is lost.

Workaround: Do not remove the POTS card.

CSCdk55611

If you specify a bad TFTP Server IP Address from the Boot ROM Menu Screen, the system controller will fail the download and will not run.

Impact: The system controller will not load with the proper image if you specify a bad TFTP Server IP Address from the Boot ROM Menu Screen.

Workaround: The user must specify the proper TFTP Server IP Address during downloads.

CSCdk92817

CLI passwd command accepts illegal passwords. The command line interface accepts function keys as legal password characters.

Impact: In passwd command, enter "123<F1>" when prompted for new password and then "123" when prompted to Reenter passwd. You will receive an error message that "passwords don't match".

Workaround: Do not enter function keys for password characters.

CSCdm01442

PVC idle cell count incorrect.

Impact: The PVC idle cell count currently is a little off when determining if a subscriber is idle or not.

Workaround: Customer can add a 2 percent cell buffer when setting the PVC idle mark value.

CSCdm03741

Inaccurate time stamp given in event log as to the time that the network interface module was inserted.

Impact: Occurs very rarely after network interface power cycle.

Workaround: None.

CSCdm08281

A random set of modems fails to attempt to train after power cycle.

Impact: Occurs after power cycle of the system controller, or software download. Rate of occurrence is 1/4 of 1 percent.

Workaround: Lock/Unlock the offending modem port. Alternatively, the module may be removed and reinserted.

CSCdm21026

Reseating OC-3 network interface generates a buffer overflow msg in VR4W.

Impact: When a network interface is reseated in the chassis, a message is generated in the ViewRunner log indicating the following error:

This occurs whenever a network interface is reseated. Even though the message refers to a subtend module, you do not need to be present for this message to appear.

Workaround: None required. This is a spurious error message that does not affect operations in any way.

CSCdm23668

FEC Redundancy bytes has no effect.

When a subscriber is configured for any of the FEC Redundancy bytes values under the DMT-2 modem parameters, there are no variation in the trained rate and error correction rate.

Impact: None.

Workaround: There is no workaround. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm25685

No support for G.dmt and G.lite.

Impact: G.lite or G.dmt cannot be configured for dual-port DMT-2 cards. This is true for all conditions.

Workaround: No workaround. G.lite and G.dmt are not supported in this release for dual-port DMT-2. They are scheduled to be part of a future release. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm36644

9000-9350 ft/-34 dBMHz, CPE cannot train.

Impact: Setting a subscriber to a PSD setting other than the default value of -40 dB may cause unpredictable results. In particular, a setting of -34 dB will cause the subscriber to continually retrain.

Workaround: Leave the subscriber PSD setting at the default of -40 dB. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm40771

Could not login to network interface debug mode after creating 1600 PVCs and 1.

Impact: Cannot login to network interface debug mode after creating 1600 PVCs and 1500 transit subscribers. Occurs after creating greater than 1600 subscribers and 1100 transit subscribers.

Workaround: None. Due to memory limitations, you cannot enter network interface debug mode after exceeding this number of subscribers and transit subscribers. The fix is scheduled to be incorporated in the next major release.

CSCdm41552

SDSL downstream traffic contention between odd and even ports.

When odd ports (1 and 3) and even ports (2 and 4) are used concurrently, there is traffic contention between the ports of the same pair downstream, for example, between 1 and 3 or between 2 and 4. One of the ports may experience significant packet loss downstream. There is no contention for upstream traffic.

Impact: The contention happens only for downstream traffic.

Workaround: Shape the downstream traffic rate to the trained rate on a per-PVC basis on the router that is directly terminating the PVC on the upstream side of the network interface. For example, on a Cisco 7200 router that has the PVC to a network interface, enter the IOS command "ubr rate" under the PVC, where the rate is the trained rate for the SDSL port in kilobits per second.

CSCdm41964

DMT-2 line card FE Corrected Blocks don't match CPE.

Impact: When corrected/uncorrected blocks are checked at the CO side then compared with similar statistics on the CPE side, the values may not necessarily match. Other statistics may also be out of sync. This can occur with any kind of connection.

Workaround: None. There are slight differences in the manner in which the firmware reports statistics to the CO and the CPE side. The discrepancies are not severe enough to impact accurate reporting of general functionality. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm43638

DMT-2 fails to meet T1.413 loop midCSA 6-cannot set margin of 3.

Impact: When running T1.413 MidCSA 6 loop, the required rate cannot be met. MidCSA 6 requires a margin setting of 3; however, there is no way to set the margin below 6. Although you can set the value below 6 in ViewRunner, the margin will remain at 6.

Workaround: None. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm46110

DS3 subtending bandwidth is less than 40.7 Mbps.

Impact: When a rate greater than 40.2 Mbps of traffic is sent through the DS3 subtend ports, traffic will be sent no faster than 40.2 Mbps. This occurs only when attempting to send traffic at a rate greater than 40.2 Mbps through the subtend ports.

Workaround: None required. This change was need to keep cells from being lost due to the inability of the subtend ports to handle traffic greater than 40.2 Mbps.

CSCdm52542

DMT Downstream file transfer performance overly impacted by upstream rate.

Impact: When the downstream rate is set much higher than the upstream rate—for example, 1544/96—the data transfer rates will likely not be as high as would be expected for downstream data transfers. This occurs when upstream rates are set very low relative to downstream rates, and particularly for file transfers that require acknowledgements, such as FTP.

Workaround: Do not set very low upstream rates, such as below 256 K, when using high downstream rates.

CSCdm59472

DMT cannot train at 128 K increment for upstream.

Impact: When a subscriber is configured for an upstream rate that is an increment of 128 K such as 128 K, 256 K, and so on, the trained rate will always be at least 32 K below the configured rate. This only occurs with upstream increments of 128 K.

Workaround: There is no workaround to obtain an increment of 128 K. If a higher rate is desired, setting the next higher rate will allow this. For example, to get greater than 128 K, provision for 160 K, which will result in a 160 K trained rate.

CSCdm69047

DMT Setting PSD -43 = -52; -46 = -40; -49 = -40.

Impact: Setting the PSD to -46 dB or -49 dB in ViewRunner results in the downstream PSD still being the default of -40 dB. This occurs only with DMT-2.

Workaround: None. The inability to set PSD lower than -43 dB is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem. Cisco strongly recommends that the default PSD of -40 dB be used.

CSCdm69068

DMT with trellis enable, CB/UB go down, but intermittent high ES² .

Impact: Trellis coding enabled for a subscriber causes the connection to show up with a high ratio of corrected/uncorrected blocks and excessive ES counts. This occurs when trellis coding is enabled at both the CO and CPE so that trellis is then active for the connection.

Workaround: Do not enable trellis for the subscriber. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm76074

DMT 16000, 32000 and 64000 interleave all equal maximum.

Impact: Setting interleave for DMT-2 line cards to 16000, 32000 or 64000 all results in the maximum interleave setting being used. This will show up on the CPE output as interleave = 64. This occurs whenever any of these interleave settings are utilized.

Workaround: None. This is the maximum interleave that currently can be obtained with DMT-2 in the Cisco 6130. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm77282

DMT-2 margins cannot be set lower than 6 dB.

Impact: Setting margin for DMT-2 lower than 6 does not change the actual setting, which will still be 6 dB. This occurs with any DMT-2 margin setting less than 6 dB.

Workaround: None. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm77285

Enabling DMT-2 Bit swapping has no effect.

Impact: This occurs under all circumstances whenever bit swapping is set.

Workaround: None. Bit swapping is not supported in the current release. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm81817

DMT-2 various mode, upstream rate combos cause high ES, CB.

Impact: Excessively high corrected/uncorrected block ratios and ES counts are seen when the following combinations are provisioned for a subscriber: overhead framing mode-2, 64 kbps upstream; or overhead framing mode-3, 96 kbps upstream.

The high error rates only occur with the overhead framing mode-2, 64 kbps upstream, or overhead framing mode-3, 96 kbps upstream combinations.

Workaround: Do not provision a subscriber with either of these combinations of overhead framing mode and upstream rate. This problem is due to a limitation with third-party hardware. There is currently no scheduled date from the vendor for resolution of the problem.

CSCdm87044

ATU-C generates IPC to SMB Unable to allocate buffer!

Impact: After training up 64 modems at 864/8032 and requesting "status x" from all 64 ATU-C channels (via serial ports), the following error occurs for all ATUCs:

This problem will also occur if

• All 64 CPEs are in operational mode.
  
  
• The subscibers are all ready to train at 864/8032; 3) The subscribers are unlocked simultaneously using CommandRunner. As the Cisco 6100 begins training units, the buffer error will occur.
  
  

Workaround: None required for the status command via the serial port issue because this requires special connectors that are not available to customers. For the problem with issuing "unlock all" in CommandRunner, the workaround is to not unlock all of the line modules or subscribers at once. They should be unlocked in batches of less than 8 at a time.

CSCdp27472

2xDMT module does not support the fast path option. It has been set up not to break but it is still using the interleaver. The vendors firmware does not support the fast path at this time. It has been reproduced when implemented by running the interleaved path with a depth of 0. This simulates the fast path.

Impact: There will be a slight delay. Less than running with an interleaver delay but more than running the fast path.

Workaround: None.

CSCdp52726

SDSL overhead causes 16 K lower throughput.

Impact: When SDSL is utilized, measured rates will be 16 K lower than the trained line rate. This only occurs with SDSL.

Workaround: None. Because of the nature of SDSL, overhead causes the traffic rate to be 16 K lower than the trained line rate.

CSCdp74006

2xDMT2 won't train at 7680, 7744, 7808, 7872, 7936, and 8000. This is because the vendors firmware does not support the symbol rate (S) = 1/2. This is the symbol rate that is selected for these configurations. If the line is provisioned for a high bit rate and a high FEC redundancy byte count, then this can occur. The line will not train at the provisioned rate. It may be possible that the line will train higher than the provisioned rate.

Impact: There is not an impact while attempting to pass data. The only impact is that the line will not train at the provisioned downstream bit rate.

Workaround: None.

CSCdp74033

Wrong actual Upstream PSD Mask reported for dual-port DMT. The vendors firmware does not currently support remote reporting of the CPE PSD setting. The firmware simply reports a PSD setting of -82 dBMHz, which is the lowest possible value.

Impact: There is no impact on traffic. This simply means that the CO (61xx) can not read the transmit PSD setting on the CPE device. This is simply a performance reporting problem.

Workaround: In most configurations, it may be possible to telnet to the CPE and use its CLI to view the PSD setting.

CSCdp79941

Some STU-C modules lose packets during 12-hour traffic run.

Impact: This is an ongoing problem that is occurring in the current 2.4.x release. The data loss is minimal and should be recoverable. This is being investigated and will be fixed in the next release.

Workaround: None.

CSCdp79960

All 4 ports dropped train on STU-C module while there is no traffic.

Impact: This is an ongoing problem that is also occurring in the current 2.4.x release. This is being investigated and will be fixed in the next release.

Workaround: None.

CSCdp79976

Some Cisco 677s dropped train with the dual-port DMT line card during traffic.

This has occurred occasionally on a Cisco 6100 loaded fully with 32 dual-port DMT-2 cards provisioned at 2560/864 kbps, some ports occasionally drop train when traffic is run for around 12 hours.

Impact: Because the ports that drop the train retrain and come up immediately, the impact is minimal.

Workaround: None. The problem has occurred only on a fully loaded Cisco 6100/6130 with 32 DMT-2 cards.

CSCdp80537

Minor alarms appear when the STU-C modules are in normal condition after changing the right chassis from CAP/DMT-2 to SDSL after upgrading to 3.0.0. This problem occurred only once in the lab when the 6100 system was upgraded using VROV, after clearing the 6100 system NVRAM and Flash.

Impact: Customers will not be able to remove the minor alarms.

Workaround: None.

CSCne01131

During a network interface reset, active OC-3 cell flow may cause network interface alarm and network interface shutdown on power-up.

Impact: If the fiber is currently plugged in and active, during install or reset of the system, then the network interface may shut down. The following alarm in ViewRunner is provided to alert the user of this problem: "ATM SWITCH POLLING RATE IS INADEQUATE, CELLS DROPPED."

Workaround: Disconnect fiber and restart network interface.

CSCne01854

Following a network interface reset, the following nonfatal events are seen in the event window:

FC_SUBTEND_PORT_BUFFER_OVERFLOW INFO

FC_SUBTEND_PORT_UTOPIA_ERROR INFO

FC_SUBTEND_PORT_INGRESS_ERROR INFO

FC_SUBTEND_PORT_INGRESS_2_ERROR INFO

FC_SUBTEND_PORT_EGRESS_PARITY INFO

Impact: No impact. Events are generated at start-up and are based on the start-up sequence of network interface and SHM.

Workaround: Not required.

CSCne01901

Infrequently, in a single LIM chassis system, if you replace a LIM controller, this causes ViewRunner to display two LIM chassis.

Impact: Displays a LIM chassis, which does not exist.

Workaround: Delete second LIM chassis.

CSCne01912
CSCne01913

DS3 subtending port does not block data flow upon port or module lock. Unimplemented feature at this time.

Impact: Cannot block data by unlocking subtend port.

Workaround: To block the data, pull out the DS3 cable.

CSCne01970
CSCne02364

Fabric Control does not configure transit VPCs.

Impact: No system impact; unimplemented feature.

Workaround: Use VCCs only.

CSCne02176

When locked, Cisco 6100 modules still respond with alarms when pulled from chassis.

Impact: No system impact; unimplemented feature.

Workaround: Not required.

CSCne02362
CSCne02112

System control IP information becomes corrupted after save or after BOOTP is completed.

Impact: Only an installation impact when you use the BOOTP capability.

Workaround: Reenter the system controller IP address in the boot menu.

CSCdk34684

CAP ATU-C margin can be lower than specified for 1024 k and 896 k.

CSCdk37403

This is a problem if a user is using an SNMP command line tool or MIB browser. This is not a problem when using ViewRunner. If the Cisco 6100 is sent an SNMP "row create" of a subscriber with the line port of the subscriber included in the set (lrSubscrRowStatus.1=createAndGo; lrSubscrLinePort.1=lrLpLPoolId.2.1.1), the set will fail.

CSCdk43208

Disconnecting tip/ring momentarily causes loss of upstream data.

CSCdk43651

LIM Controller SMB failure over Temperature and Humidity.

CSCdk47034

Concurrent network interface debug sessions may give incorrect output values.

CSCdk49649

In CLI for SendByte and RevcvByte the error codes are incorrect.

CSCdk51475

Network interface debug command DS3 status (ss all) will show unexpected m23 format.

CSCdk52588

Interrupted upgrade causes system controller to be orphaned.

CSCdk53806

Command Line Interface does not show "CPE NOT TIMER ENABLED" alarm text.

CSCdk55957

ATU-C does not give enough margin when trained to a c660.

CSCdk57362

If the system is in Direct Connect mode, the CPE TIMER alarm is not cleared after lock/unlock of the line port.

CSCdk57824

Downstream RS errors when adjacent modem channel hangs up.

CSCdk59039

This problem only occurs in a lab debug environment. If a user is sending debug messages and enters an invalid instance type in the message, the system controller can crash.

CSCdk60677

In the network interface module debug interface, the "dr" and "mr" cmds do not check for range.

CSCdk62129

Network interface CT: When Reset command is given, CT window hangs.

CSCdk67493

DS3 network interface is not sending PLCP yellow during PLCP OOF.

CSCdk71731

User input is not received by network interface correctly when done via cut-thru.

CSCdk72226

SHM and network interface images won't distribute if certain size.

CSCdk87539

In-Band management use Crashes Node to Probe. ISR Problem.

CSCdk90876

Network interface command pd all or dump causes the network interface to hang.

CSCdk91925

Network interface debug command help oc3 lists oc3 fac incorrectly.

CSCdk91973

Need to change CLI menu item #3 from Netspeed to Cisco.

CSCdk92026

No logout on system controller's CLI.

CSCdk92037

System controller CLI login accepts illegal user names.

CSCdk92051

Wrong Alarm description displayed.

CSCdk92894

On system controller CLI, one hour logout does not work.

CSCdk92932

Network interface port 67 for in-band management is not displayed on network interface console.

CSCdk92940

Two problems with the initial ds3 FEAC implementation:

1. Coded entries in the FEAC RX register of the WAC-034 contain the middle 6 bits of the 8-bit FEAC word. The message definitions have to be changed to reflect this.

2. Loopback control consists of a burst of 10 loopback control messages followed by a burst of applicable channel messages. An interrupt will have to be enabled for processing FEAC.

CSCdk93293

Output of DS3/OC-3 command on network interface debug menu needs cleanup.

CSCdk93299

At network interface debug menu, a mistyped command will turn a setting off.

CSCdk93302

Loopback of the DS3 interface on the subtend module of the Cisco 6100 does not function.

CSCdm00073

Illegal dates accepted.

CSCdm00271

Only four CLI sessions allowed at one time.

CSCdm00653

Cisco 6100 DS3 Interface Reports FIFO FULL Locks Up.

CSCdm01464

Network interface command wipes out PVC cell count.

CSCdm02229

Network interface hidden debug menu is left exposed when CLI session closed.

CSCdm02803

The message relayed to the user informs the user of the lockout period in minutes. The time used is actually the session timer setting instead of the lockout timer.

CSCdm03580

Orphaned PVCs occur if system controller is reset right after a PVC is created.

CSCdm04568

EPD setting not saved across network interface resets.

CSCdm04577

Password for network interface hidden cmds menu visible in CT session terminal.

CSCdm04581

MCLI commands/responses echoed on all MCLI session terminals.

CSCdm05442

Software upgrades performed over the inband management channel take a long time to complete.

CSCdm06831

Output of DS3 parameters for network interface and SHM don't match.

CSCdm06833

SHM debug interface displays debug messages for alarms.

CSCdm11662

Port status messages appear on SHM debug menu.

CSCdm11912

Tx setting of OC-3 network interface acts opposite of expectation.

CSCdm12296

DS3 network interface debug menu does not allow ds3 tx on command.

CSCdm12740

VR reports incorrect value for ATU-C margin readings.

CSCdm13099

Y2K—Event occuring on 2/29/2000 is logged on 3/1/2000.

CSCdm13108

Over 1580 subscriber PVCs causes the network interface to continually reset.

CSCdm13350

MCLI I/O allocates memory of long-term storage region.

CSCdm19596

System controller locked up.

CSCdm20429

Some trained and active connections are not active in network interface.

CSCdm20798

DMT-2 does not accurately report trained/not trained.

CSCdm20843

Network interface reports incorrect cell counts for the first request on an active VPI/VCI connection.

CSCdm24561

ATU-Cs constantly reset.

CSCdm25489

Chassis list (from cr) resets the system controller when LIM chassis is present.

CSCdm25689

System reset causes bad network interface state.

CSCdm25708

Walk of lrSlotTable for LIM chassis returns invalid lrSlotEntries.

CSCdm25731

Cannot pre provision a LIM chassis.

CSCdm25734

Chassis Alarms returns bad values.

CSCdm25847

Network interface constantly resets in Direct Connect system if modems are training.

CSCdm27013

64 active connections kills CPE in-band messaging.

CSCdm29272

Agent reports bad value error when adding LIM chassis.

CSCdm29330

lrNumTrapReceivers does not get updated when trap rcvr is added.

CSCdm29561

Postcard message generation from system controller's user interface does not send correct data.

CSCdm31114

Network interface DS3 does not throttle in the upstream direction.

CSCdm31593

The trained downstream rate is less than the 2.2.1 release in the range of 11000 ft to 15000 ft when provisioned with zero dB downstream margin.

CSCdm33193

Subtend port loses cell at full ds3 rate.

CSCdm36984

CLI command shows stat icp client should display clearer info.

CSCdm45054

Clearing of fan shelf alarm causes system reset.

CSCdm76638

Connection entries on network interface damaged.

CSCdm87985

ADI/Aware DSP Upload Can Corrupt ADI/Aware Flashes.

CSCne01497

Identical fault message text is provided when network interface DS3 C-bit parity detection is asserted and cleared.

CSCne01854

Following a network interface reset, the following nonfatal events are seen in the event window:
FC_SUBTEND_PORT_BUFFER_OVERFLOW INFO

FC_SUBTEND_PORT_UTOPIA_ERROR INFO

FC_SUBTEND_PORT_INGRESS_ERROR INFO

FC_SUBTEND_PORT_INGRESS_2_ERROR INFO

FC_SUBTEND_PORT_EGRESS_PARITY INFO

CSCne01970
CSCne02364

Fabric Control will not configure transit VPCs.

CSCne02002

On the STM module, the RAI and OCD alarms do not clear when the alarm condition is corrected.

CSCne02132

In alarms test, clearing AIS alarm gives PLCP OOF rather than RAI alarm.

CSCne02408

System controller and LC reset after modifying dip switches IDs to 14 and 15 from 1 and 2.

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