Same stuff still goes on at various levels but as far as PoE goes with the gear we have, it's solid. Standards are open to interpretation and get implementated in slightly different ways resulting in interoperability issues at times.

In concept I guess you could say something like this is related. I haven't seen issues like that in almost a decade. I remember the days where Brand X NIC didn't play nice with Brand Y switch for speed/duplex negiotation but that was a long time ago and certainly not just Cisco specific. It is very rare for us to have any PoE issues with any of this gear. I don't even remember all the details, It's been a little while and unfortunately we didn't have much time to spend on it. Just used injectors for the time being until we could get back to it and investigate indepth.

We have had it on multiple 802.3at compliant switches (30W max) but they did not negoiate and the camera never powers. That was with an Axis P5534 if I recall correctly. It needs to be balanced properly, call for a service call. with one exception that we haven't gotten back to, to investigate. Its when your higher frequencies power level it drastically lower than your lower frequencies. Not sure if anyone out there can shed light on this issue. This equipment will take longer to load when rebooted. This happened on Stardot, Arecont, Vivotek and Axis cameras/encoders, all exibiting the same behavior. Receiver Capabilities HD Capable Up to 2 simultaneous DVR recordings Up to 469.8 hours of SD recording Up to 251.2 hours of HD recording Compatible with external hard drive Notes: Estimated storage claim will vary with mix of HD and SD recordings. Putting external PoE injectors gets the cameras linked back up but defeats the purpose and function of high end expensive networking equipment. Cisco is telling us that these cameras manufacturers are not follwing tru PoE standards with their Class assignments meaning that the camera is asking for one wattage and actually needing another. After installing the new switches we had many cameras from all brands either fail to PoE power or even less commonly, pull PoE power but no link. Last night, thunderstorms in the area caused a brief power outage while I was away. This install had all IP cameras from 3-4 brands powered and working perfectly thru the ESW switches. Ive had an 8640HDC (from Time Warner) for about a year and a half. Well since, then on an existing install, we did a network upgrade changign all ESW series untis out for new 29 series units. We resolved it by moving all cameras off PoE and back to 12/24 rack mount power. We struggled with Cisco and Arecont back and forth, each blaming the other company's product. This happen with Arecont cameras, 3 differnt models both Bullet syel and Megadome. With Perpetual PoE, the PoE+ power is maintained during a switch reload. Intelligent power management allows flexible power allocation across all ports. Sounds like a power issue but we are way under the max PoE power consumption for those swicthes. The PoE power allocation in the Cisco Catalyst 1000 Series Switches is dynamic, and power mapping scales up to a maximum of 740W of PoE+ power. A power cycle of the switch would then power up other cameras and then not ones previuously powered. Sometimes they would work, sometimes not. We first noticed on a new installation the some cameras were having trouble negotiating PoE power. Recently on several projects we have starting using the 2960 series. We have very many installations using the lower end ESW Series and have had no issue whatsover in using any brand of IP camera powered via PoE. When devices plugged into these ports are shut off, power will turn off for everything else plugged into the power bar.I thought I would put this out there and see if anyone has experienced similar issues with using the 3500 or 2960 series of Cisco network switches.

Some newer power bars have a 'master' port.

If the TV box can then be turned on, the issue might be your power bar.

Try plugging the TV box directly into a wall outlet.

Try plugging the power bar into a different wall outlet.

Investigate whether the wall outlet your TV box is plugged into is a 'switched outlet' that is controlled by a wall switch.

If it has, turn the breaker to the 'on' position to restore power to that outlet, then try to power on your TV box.

Locate your home breaker box and check to see if the breaker for the wall outlet has tripped.

Try plugging the TV box into a different wall outlet.

While you try the troubleshooting options below, be careful while unplugging cables from wall outlets and power bars. There might be an issue with the power outlet or power bar you have your TV box plugged into.

Cisco dvr power on time