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Joe Harris, CCIE No. 6200 (R&S, Security & SP) is a Systems Engineer with Cisco Systems® specializing in Security. In addition to authoring Cisco Network Security Little Black Book, Joe has also been a technical reviewer for several Cisco Press publications and written articles, white papers, and presentations on various security technologies. He also assists various Certification Partners by beta testing their newest CCIE certification workbooks and has been recognized by Cisco as an SE Wall of Fame award winner.

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3750G Field Notice

March 12th, 2008 • Related • Filed Under

“Barrel Cracking” in the via holes of the Printed Circuit Assembly (PCA) of WS-C3750G-48TS-E and WS-C3750G-48TS-S could potentially threaten the reliability, or shorten the life of the affected switches. A via hole is a plated hole on the PCA that is not used to attach components, but serves as inter-layer connections. “Barrel cracking” describes the situation when the plating inside a via hole is cracked. Barrel cracking, whether partial or complete, results in different layers of the PCA not properly connected to each other, and hence the reliability of an affected switch is compromised.

Only those switches with matching switch system serial numbers are affected by this issue. For further details or to determine if your switch is affected by the notice, please view the complete field notice at the following link:

Field Notice 62570

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