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Community Member

Pre-standard PoE and NME-16ES-1G-P in 2811 router

Hi all,

I just got 5 routers (CISCO2811-AC-IP) with 5 NME-16ES-1G-P modules for them.

I haven't used a switch module in a router in years, and have never used one for PoE.

Anyways, I found:

From that link:

"The new Cisco EtherSwitch service modules (NME-16ES-1G-P, NME-X-23ES-1G-P, NME-XD-24ES-1S-P, and NME-XD-48ES-2S-P only) are capable of providing both Cisco pre-standard and IEEE 802.3af Power over Ethernet (PoE) support when inserted in Cisco 2800 Series or 3800 Series Integrated Services Routers (requires an upgrade to an AC-IP power supply)."

If I plug in a Cisco 7970 phone (which uses 802.3af if I'm not mistaken?), it does supply power.

Unfortunately, this customer has only the older 7940 and 7960 phones, which require the pre-standard PoE. And of course, when I plug in a 7940, the link light on the NME card lights up for that port, but the phone doesn't have power, and if I do "show power inline" I see no power being supplied on that port.

Am I missing something in terms of how to get pre-standard PoE devices working in the scenario, or is that document I quoted above incorrect?

Any help would be most appreciated!

Community Member

Re: Pre-standard PoE and NME-16ES-1G-P in 2811 router

Just thought I'd share the solution in case anyone else had this issue.

The NME module shipped with 12.2(35) on it, and I updated it to 12.2(46)SE

This solved the pre-standard PoE issue. Must have been some bug with the factory version.

Community Member

Pre-standard PoE and NME-16ES-1G-P in 2811 router


Just to carry on this thread and maybe help, I experienced the same issue.  NME-16ES-1G-P shipped with 12.2.35,  cisco 7940, 7910 and 7912 all experienced no Power from the 2811/2821 with AC-IP PSU.  Port would error disable and state loopback detected.  I upgrade to 12.2.50 code and all was fine.

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