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Cisco CSS 11500 Series Content Services Switches

Field Notice: *Expired* FN - 28256 - Some Non-Fully Populated Cisco CSS 11500 Series Content Services Switches Running WebNS Version 7.10.4.06 and Earlier May Incorrectly Detect Module Presence


Revised April 17, 2008
January 07, 2004


NOTICE:

THIS FIELD NOTICE HAS BEEN EXPIRED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.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

Product

Comments

CSS11503-AC

Not fully populated

CSS11506-2AC

Not fully populated

CSS11506-2DC

Not fully populated

  

Problem Description

WebNS 7.10.4.06 software and earlier may not correctly detect the number of modules installed in the chassis. Some software was incorrectly using information from the Switch Module to determine module presence at boot time rather than the backplane. If the software determined that a module was present, it would send a broadcast message to that module, which could cause internal queue problems.

Background

The WebNS software was incorrectly detecting modules at boot time and sending out broadcast messages to unpopulated slots. These messages could cause internal queue problems.

Problem Symptoms

A CSS11500 with empty slots may display the following Syslog messages: OCT 20 05:42:43 1/1 35 FP_DRV-4: PrismImmFastPath::Send: TxToQueue Failure. Message Send aborted.

OCT 20 05:42:44 1/1 36 FP_DRV-3: PrismBufferDebug: (Buffer Pool: 2)
Xfer of ownership error on buffer 0x8fc14100.
Attempt to xfer FROM: IQ2000 TO: IQ2000
Xfer activity FROM: DEALLOC TO: DEALLOC
Old Task: FpVlanLearn(Id = 0x8bbc02a0), New Task: FpVlanLearn(Id =
0x8bbc02a0)

Note: The buffer addresses and task names may vary from system to system.

This condition could result in boot issues, arp reply issues, or other unknown behavior.

Workaround/Solution

The defects related to this field notice have been fixed in a Sustaining build and will be incorporated in the next maintenance releases. Cisco Systems recommends that customers with non-fully populated chassis running 7.10 software upgrade their WebNS software to 7.10.4.07S until the next maintenance release is available. WebNS 7.20 software should not display this problem.

The software can be downloaded from the CSS11500 Interim Releases page.

DDTS

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

DDTS

Description

CSCdy79571 (registered customers only)

switch driver should check presence bits

CSCec83521 (registered customers only)

FP_DRV-4 PrismImmFastPath Send msg keeps being logged on CSS

  

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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