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New Member

Is 7960 IEEE802.3af PoE compatible?

Is IP Phone 7960 IEEE 802.3af PoE compatible? I do not see any reference to it in the latest release notes. Is there any difference to Cisco's inline power implementation & 802.3af?

Which switches support it right now?


New Member

Re: Is 7960 IEEE802.3af PoE compatible?

Here is some info froma couple of slides I saw at a recent Cisco seminar that discussed the IEEE 802.3af PoE Standard.

Cisco original implementation:

Provides 48VDC @ up to 6.3 watts per Ethernet port

Supported by Cisco devices such as

IP phones and wireless access points

Identifies device requires power and only delivers

power to devices that require power

Uses CDP to manage power delivery

IEEE 802.3af standards-based Power over Ethernet:

Specifies 48VDC @ up to 15.4 watts per Ethernet port

Increased power enables a new range of Ethernet powered devices

Uses standards-based discovery and power delivery methods

Several optional elements to standard

802.3af compliance is only relevant to new

devices introduced into the network – existing

devices are supported with current interfaces

Future Cisco PDs and PSEs will support both Cisco inline

power and 802.3af inline power where relevant

Cisco inline power PDs work with next-gen Catalyst switch modules

Next-gen PDs work with existing Catalyst switches

Manual configuration is NOT required – its automatic

As the customer deploys incremental network upgrades the network

seamlessly migrates towards the 802.3af

Cisco implementation and 802.3af compliant modules & switches

can be intermixed mitigating the need for complete upgrade situations

From my understanding at the presentation NONE of the Cisco products currently support the IEEE standard, but they will support a mixture of the Cisco implementation and the IEEE standard in the future with additional modules/software changes.



New Member

Re: Is 7960 IEEE802.3af PoE compatible?

Thanks David.