It's 1841 series router, however, when do show environment, we see 'ILP power supply -absent' message, checked another same 1841 router, there is no 'ILP Power Supply -Absent' message.
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ILP Power Supply -Absent <<<<<<
Checked cisco website, that Cisco 1841 router do not support Cisco product-based inline power,or Power over Ethernet (PoE). May i know what the ILP Power Supply -Absent' come from?