Why is my 100Base-T Hub 12txm (J3233A) or 100Base-T Hub 12tx (J3234A) experiencing resets or failed connections?
The auto-negotiation signals of some 100Base-T devices may cause the HP J3234A 100Base-T Hub-12tx and HP J3233A 100Base-T Hub-12txm to repetitively reset all its ports, possibly causing severe network disruption, failed connections, or abnormal LED behavior. This problem affects only the “A” version Hub-12txm and Hub 12-TX. It does not occur with the “B” version of those products (J3233B and J3234B). This problem does not occur in the J3235A 100Base-T Hub-8txe or the J3272A 100Base-T Hub-24tx. This problem also does not occur in any HP 100Base-T switching products. These other hub and switch products all use different chip sets and different architectures, and therefore do not exhibit any of the problems associated with the “A” version of the Hub-12tx and Hub-12txm products. Problem Symptoms Reset activity is seen when a 100Base-T device is either first connected to the hub OR the device is powered on after being connected to the hub. The resets may cause the hub’s LEDs to flash on and
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