Cisco pioneered Inline Power over Ethernet with the release of Cisco Catalyst Inline Power in March of 2000 whereas 802.3af came much later. Cisco Inline Power is pre-standard so used only by cisco devices shipped before standard.
To preserve customer's existing investment in Cisco Inline Power, Cisco intends to implement Cisco Inline Power and IEEE inline power on future Cisco PDs and PSEs. This will enable existing Cisco Inline Power PDs and PSEs to be connected to future Cisco IEEE PSEs and PDs.
So if cisco is connected to cisco device , can use any but if connecetd to other vendorscan use only 802.3af.
If a PD supports both IEEE 802.3af and Cisco pre-standard, the PD is detected as an IEEE device. PoE switches classify the PD at the detection stage and allocate a required power budget based on the IEEE class.
2. CDP is enabled
The phone is classified as a IEEE Class device when it first powers up, but after it powers up, CDP sets the desired power level .
Since all of this happens automatically, it is not possible to determine whether the IEEE standard or the pre-standard runs.
Well one way to find if PD is detected by 802.af standard or cisco ilp is to use the command" show power inline". If PD is detected by 802.af standard, we will find under the device field device type such as AIr-AP_1231_A-k9 and under the class field n/a.
But the PD is detected by ieee standard, then we will find " ieee PD" under the device field and any number from 0through 3 in class field.
So we can tell which method is used to detect and supply the power to PD.
But the question remain which method will be used if both switch and Ap can support 802.af and cisco ILp method.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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