Cdp Inline Power Negotiation; Inline Power Status Messages - Cisco Aironet 1130AG Series Hardware Installation Manual

Low Power Condition

CDP Inline Power Negotiation

The access point uses CDP (Cisco Discovery Protocol) to negotiate with the in-line power source for
sufficient power. The results of these negotiations will either be a decision to enter full power mode or
to remain in low power mode. Independent of the CDP negotiations, the access point hardware uses the
802.3af classification scheme to report maximum power is required by the access point.
Currently, Cisco switches (802.3af capable) do not support CDP in-line power negotiation. The access
point automatically enters normal power mode if a Cisco Catalyst 3550, 3560, or 3570 switch is detected
in the received CDP ID field.
When the access point determins that sufficient power is not available for normal power mode an error
message is logged and the Status LED turns orange to indicate the low power mode ((see the
the Access Point LEDs" section on page 6-2
page

Inline Power Status Messages

These messages are logged by the access point to report the power condition:
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%CDP_PD-4-POWER_OK: Full power - AC_ADAPTOR inline power source—This message
indicates the access point is using the power module and can support full power.
%CDP_PD-4-POWER_OK: Full power - NO_CDP_NON_CISCO inline power source—This
message indicates the access point is operating at full power but is connected to a non-Cisco in-line
power source. To prevent possible over-current conditions, this must be an IEEE 802.3af compliant
power source or an IEC60950 compliant limited power source.
%CDP_PD-4-POWER_OK: Full power - HIGH_POWER_CLASSIC inline power source—This
message indicates the access point is operating at full power and has detected a Cisco switch capable
of supplying sufficient power.
%CDP_PD-4-POWER_OK: Full power - MIDSPAN inline power source—This message indicates
the access point is operating at full power and the Cisco IOS power in-line negotiation command has
been used to indicate a power injector is being used to supply power.
%CDP_PD-4-POWER_OK: Full power - NEGOTIATED inline power source—This message
indicates the access point is operating at full power and power is being supplied by a Cisco switch
capable of power negotiation.
%CDP_PD-2-POWER_LOW: All radios disabled - LOW_POWER_CLASSIC inline power source
platform=AIR-AP1120B-A-K9
access point is in low power mode with all radios disabled and the power source is not capable of
in-line power negotiations. The xxxx.xxxx.xxxx indicates the MAC address of the power source.
%CDP_PD-2-POWER_LOW: All radios disabled - NEGOTIATED inline power source
platform=AIR-AP1120B-A-K9
access point is in low power mode with all radios disabled and the power source is incapable of
supplying sufficient power. The xxxx.xxxx.xxxx indicates the MAC address of the power source.
D r a f t 2
and the "Inline Power Status Messages" section on
MAC address=xxxx.xxxx.xxxx—This message indicates the
MAC address=xxxx.xxxx.xxxx—This message indicates the
Chapter 6 Troubleshooting
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