APSB_w252 — Eth Switch Port Link Down

Full alert identifier: APSB_w252_ethSwitchPortLinkDown

Alert description

The Autopilot electronic control unit (ECU) detects that the Media Control Unit (MCU) port connected to the ethernet switch has a link down, indicating a condition affecting the cabling or the ECU connected to that port.

Potential impact

Communication between the autopilot ECU and MCU will be disrupted.

Set condition

The alert is set if link goes down.

Clear condition

The alert clears when the link is up.

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of APSB_w252.

APSB_w246 — Ethloop Switch Port Link Down APSB_w246_ethloopSwitchPortLinkDown The APS detects that a port of the etherloop switch has a link down, indicating a condition affecting the cabling or the electronic control unit (ECU) connected to that port. On turbo A, Port 2 is connected to RIGHT controller. On turbo B,…
APSB_w133 — ETH Switch Error APSB_w133_ETHSwitchError Autopilot Processor Secondary (APS) has not initialized the Ethernet switch correctly.
APSB_w309 — Eth Bridge Down APSB_w309_ethBridgeDown The Autopilot Secondary (APS) firmware (FW) detected Ethernet Bridge is down.
APSB_w269 — Eth Switch Rx Page Count Too High Port0 3 APSB_w269_ethSwitchRxPageCountTooHighPort0_3 The Autopilot Secondary (APS) detects the page count usage above threshold on the Rx queues of any etherloop switch ports 0-3.
APSB_w270 — Eth Switch Rx Page Count Too High Port4 7 APSB_w270_ethSwitchRxPageCountTooHighPort4_7 The Autopilot Secondary (APS) detects the page count usage above threshold on the Rx queues of any etherloop switch ports 4-7.

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