August 20, 1999
Products Affected
|
Product |
Description |
|---|---|
|
ws-x2831 |
Fiber Distributed Data Interface (FDDI) - unshielded twisted pair (UTP) single-attachment station (SAS) for Catalyst 2820 |
|
ws-x2841 |
FDDI - Fiber SAS for Catalyst 2820 |
|
ws-x2842 |
FDDI - Fiber dual-attachment station (DAS) for Catalyst 2820 |
Problem Description
It is possible for FDDI data to become corrupt on heavily congested FDDI rings interconnected with Catalyst 2820 FDDI interfaces that are running code prior to release 1.20.
Problem Symptoms
Data may become corrupt.
Background
The data corruption is caused by a Frame Buffer management problem that could free a frame buffer that is in use, causing data in the buffer to become corrupt. Since the frame check sequence (FCS) is calculated after the frame is transferred from the frame buffer, the FCS will be correct for the potentially corrupted frame.
Workaround/Solution
This is fixed by code release 1.20 for the FDDI modules.
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View bug detail for CSCdm55559 (registered customers only)
For More Information
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