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Cisco 7200 Series Routers

Field Notice: FN - 62452 - PA-8B-S/T - Line Protocol Failure or System Crash - RMA on Failure

Field Notice: FN - 62452 - PA-8B-S/T, Line Protocol Failure or System Crash - RMA on failure

Revised October 9, 2009
December 6, 2006


NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Products Affected

Products Affected Top Assembly Printed Circuit Assembly
Part Number Revision Part Number Revision
PA-8B-S/T
800-02060-04
A0
73-2194-04
A0

Problem Description

PA-8B-S/T port adaptors within the above noted serial number range, having a top assembly number (TAN) of 800-02060-04 and Printed Circuit Assembly (PCA) number of 73-2194-04, may experience anomalous behavior. This behavior can include a line protocol failure while the ISDN BRI link is up or a system crash.

The failures encountered are due to a hardware problem on the affected version of the PA-8B-S/T port adaptor. It has been determined that the field programmable gate array (FPGA) firmware resident on the affected PA-8B-S/T port adaptors has a defect resulting in an invalid PCI cycle. This issue will require that the affected PA-8B-S/T port adapter be replaced. PA-8B-S/T FPGA code is not field upgradeable.

Refer to the How to Identify Hardware Levels and Workaround/Solution sections to determine the required corrective action.

Background

Various failures have been reported on one (1) specific TAN and PCA version (73-2194-04, 800-02060-04) of the PA-8B-S/T port adaptor. These failures can range from ISDN line protocol failures to a system crash. It has been determined that the field programmable gate array (FPGA) firmware resident on the affected PA-8B-S/T port adaptors has a defect resulting in an invalid PCI cycle. This issue will require replacement of the affected port adaptor for a replacement unit with updated FPGA firmware. PA-8B-S/T FPGA code is not field upgradeable.

Problem Symptoms

System Crash Example

An example of a 7200 series router encountering a system crash as the result of a suspect PA-8B-S/T port adaptor is as follows:

[OUTPUT OMITTED]

%ERR-1-GT64120 (PCI-0): Fatal error, Parity error on master read
GT=0xB4000000, cause=0x0110E083, mask=0x0ED01F00, real_cause=0x00100000
bus_err_high=0x00000000, bus_err_low=0x00000000, addr_decode_err=0x00000470

%ERR-1-FATAL: Fatal error interrupt, No reloading
err_stat=0x1, err_enable=0xFF, mgmt_event=0x10000040
[OUTPUT OMITTED]

Line Protocol Failure Example

An example of a 7200 series router encountering a line protocol failure as the result of a suspect PA-8B-S/T port adaptor is as follows. Note that the BRI line physical layer will be reported as "up" with the higher-layer ISDN protocol "down".

7200_Router>show interfaces

[OUTPUT OMITTED]


BRI2/0 is up, line protocol is down
Hardware is BRI
MTU 1500 bytes, BW 128 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Listen, loopback not set
Keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters 06:44:57
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 367
Queueing strategy: weighted fair
Output queue: 64/1000/64/367 (size/max total/threshold/drops)
Conversations 1/1/16 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 96 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
32 packets output, 448 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
3 carrier transitions


[OUTPUT OMITTED]

Workaround/Solution

There is no available workaround for the issues identified in this field notice. The solution is to replace the affected hardware.

As of approximately June 14, 2006, new products that were manufactured under deviation D085021 are guaranteed to be free of this problem and are not included within list of affected serial numbers. Refer to How to Identify Hardware Levels below for instructions on how to view the serial number and deviation number of an in-service product.

Note: Products that fall within the serial number range listed above are not affected by this problem if they have deviation D085021 or ECO E086306 applied.

Cisco recommends a fix-on-fail strategy for this problem.

Although an upgrade program had previously been provided to replace potentially affected but otherwise working product, the upgrade program is now over and Cisco will only replace product which has actually failed. The standard RMA process should be used to replace failed product.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered customer and you must be logged in.

DDTS Description
CSCsb11389 (registered customers only) PA-8B-S/T with ppp and leased line mode causes a parity error crash.
CSCse18645 (registered customers only) PA-8B-S/T= at slot#2 on C7206VXR is keeping the up/down status.

How To Identify Hardware Levels

PA-8B-S/T units manufactured between 08-FEB-2006 and 14-JUN-2006, with a part number of 73-2194-04, are potentially affected by the issues identified in this field notice.

The affected units are specifically bounded by the serial numbers identified within the serial number validation tool below:
serial number validation tool for PA-8B-S/T.

PA-8B-S/T units not identified within the serial numbers validation tool are NOT affected by the issues identified within this field notice. A manufacturing deviation (D085021) was implemented between 14-JUN-2006 and 06-JUL-2006 to allow shipment of PA-8B-S/T units with updated FPGA code. PA-8B-S/T units shipped under deviation D085021 are NOT affected by the issues identified in this field notice.

The following command line interface (CLI) screenshot shows an example of an affected PA-8B-S/T unit. Note the Serial number and Part number identification within the CLI output.

router# show diags


[OUTPUT OMITTED]


Slot 3:
BRI (S/T) Port adapter, 8 ports
Port adapter is analyzed
Port adapter insertion time 14:29:22 ago
EEPROM contents at hardware discovery:
Hardware revision 4.0 Board revision C0
Serial number 33939152 Part number 73-2194-04
< Example Serial Number and Part Number
FRU Part Number: PA-8B-S/T=

Test history 0x0 RMA number 00-00-00
EEPROM format version 1
EEPROM contents (hex):
0x00: 01 3E 01 00 00 D6 97 7D 49 08 92 01 00 00 00 00
0x10: 60 00 00 00 99 05 14 00 FF FF FF FF FF FF FF FF


[OUTPUT OMITTED]

FIGURE 1: Example "Show Diags" Command Output Identifying an Affected PA-8B-S/T Uni

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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