Cisco 12000 Series Routers

Revised November 10, 2006

November 10, 2000

NOTICE:

THIS FIELD NOTICE HAS BEEN ARCHIVED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.

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

Products Affected

Problem Description

Operating these line cards with a release of Cisco IOS® earlier than release 12.0(10)S or 11.2(19)GS5 with multicast enabled can result in all traffic (multicast and unicast) stopping.

Background

On 6/20/00 a new ASIC was cut into production on the 1xOC48 and 4xOC12 POS line cards (see "Products Affected" above). This new ASIC requires a later version of IOS than was previously required for these line cards. If an older version of IOS (earlier than release 12.0(10)S or 11.2(19)GS5) is inadvertently applied to these line cards and multicast traffic is enabled on the line card, all traffic may stop (multicast and unicast).

Problem Symptoms

When multicast traffic is handled by the new TBM6 (Transmit Buffer Manager) ASIC running Cisco IOS earlier than release 12.0(10)S or 11.2(19)GS5, the Multicast Raw Queue (MRQ) gets stuck and no outputs are sent to the neighbor router even though show int counters shows incrementing output packets. Checking the interface on the neighbor router shows that no packets have been received. Unicast traffic is also affected if the MRQ gets stuck.

Workaround/Solution

Customers who have TBM6-equipped line cards can upgrade their IOS to release 12.0(10)S or later, or release 11.2(19)GS5 or later. Customers who are not able to upgrade their IOS should return their cards to Cisco and request a replacement. Replacement line cards shipped under the original product ID after 11/20/00 will be equipped with the TBM4 ASIC (for OC48), or TBM 5 ASIC (for 4xOC12) as shown in the tables below. After 11/20/00, the TBM6 ASIC will ship only on line cards having a new product ID (having a -B suffix) as shown below.

OC-48 Line Card ASIC Shipping Summary

4xOC12 Line Card ASIC Shipping Summary

DDTS

This defect has Cisco Bug ID CSCdr04485 (registered customers only) .

Other Considerations

Returning Product to Cisco

Customers who wish to exchange TBM6-equipped line cards for TBM4-equipped line cards having the same product ID should call the Cisco Technical Assistance Center (TAC) and request an RMA coded ARFN (Administrative Request - Field Notice), referencing this field notice.

How to Identify ASIC Versions

To check which type of ASIC is on a line card, attach to the line card and type show controllers frfab bma register. A sample is shown below. Look for the string "asic id" followed by a number. The first digit of this number is the version of the TBM ASIC on the card. In the example below, the number is "60F1," corresponding to a TBM6 ASIC.

LC-Slot2>show controllers frfab bma register
FrFab REGISTERS:
**** MACSOP registers:
def encap  84000000,par err           0,force par  18000000,idle       88E2C000
ext 16 mac  3CC0000,mqs config   844000,mqs error         0
mcast drop 15-12                      0
mcast drop 11-08                      0
mcast drop 07-04                      0
mcast drop 03-00                      0
sram encapsulation:
           00000000,           00000000,           00000000,           00000000
           00000000,           00000000,           00000000,           00000000
           00000000,           00000000,           00000000,           00000000
           00000000,           00000000,           00000000,           00000000
**** SIM registers:
asic id        60F1,int status        0,int enable        1,enable            1
s int stat        0,s int enbl        F,gen baddr         0,cmd        2FDE8140
cmd valid         0,pktlen           14,baddr        601203,sq sm            31
soft reset        0
**** FIM registers:
config            2,par status        0,fir_las er        0,seq error         0
max len er        0,state             1,int_en            7
RFIM packet drops:
           00000000,           00000000,           00000000,           00000000
           00000000,           00000000,           00000000,           00000000
           00000000,           00000000,           00000000,           00000000
           00000000,           00000000,           00000000,           00000000
**** SDRAM registers:
addr error        0,ecc error         0,size conf     604F1,refresh         300
time conf     52608,ecc_diagc      E000

How to Identify 800-level

To determine the 800-level product ID of a card, use the show diag <slot> command as shown in the following example.

12008a#show diag 3
SLOT 3  (RP/LC 3 ): 1 Port Gigabit Ethernet
  MAIN: type 43,  800-3955-02 rev A0 dev 16777215
        HW config: 0x00    SW key: FF-FF-FF
  PCA:  73-3302-03 rev B0 ver 3
        HW version 1.1  S/N CAB031114EC
  MBUS: MBUS Agent (1)  73-2146-07 rev B0 dev 0
        HW version 1.2  S/N CAB03040NJJ
        Test hist: 0xFF    RMA#: FF-FF-FF    RMA hist: 0xFF
  DIAG: Test count: 0x00000000    Test results: 0x00000000
  L3 Engine: 1 - Standard OC48 (2.5 Gbps)
  MBUS Agent Software version 01.40 (RAM) (ROM version is 02.03)
  Using CAN Bus A
  ROM Monitor version 10.04
  Fabric Downloader version used 13.06 (ROM version is 13.06)
  Primary clock is CSC 1
  Board is analyzed 
  Board State is Line Card Enabled (IOS  RUN )
  Insertion time: 00:00:09 (02:04:53 ago)
  DRAM size: 134217728 bytes
  FrFab SDRAM size: 33554432 bytes, SDRAM pagesize: 8192 bytes
  ToFab SDRAM size: 33554432 bytes, SDRAM pagesize: 8192 bytes
  0 crashes since restart

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:

• Open a service request on Cisco.com
• By email
• By telephone

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