Question about Cisco Catalyst 4948e Es 48-port 10 Ethernet Switch (WSC4948EE)

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We have a Cisco 4948G set up for our network and everytime we try to plug in a PoE switch threw ethernet ports it shuts down what ever port the PoE switch is plugged into, how can i stop this from hap

The switch shuts down its own port when we connect a PoE switch to it can anyone tell me why this is happening and how i can stop it from happening i want to use my gigabit PoE switch other than this 10/100's switch that im stuck using until i figure this out.

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Are you sure this unit can handle PoE? Here is the link from Cisco.

http://www.cisco.com/en/US/products/ps6021/prod_models_comparison.html

Posted on Jun 24, 2014

Testimonial: "I'm not sure i just want to run a CAT5e cable from my 4948G to a PoE cisco 8 Port switch, Not trying to power the either switch with PoE, just want the 8-Port PoE switch for testing phones and Access Points"

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Related Questions:

1 Answer

Do the Cisco Catalyst 3850 Series PoE switches support power classification?


Catalyst 3850 Series Switches support full IEEE 802.3at Power over Ethernet Plus (PoE+).
The switch classifies the detected IEEE device within a power consumption class. Based on the available power in the power budget, the switch determines if a port can be powered (class 0,1,2,3,4). You should be aware of maximum POE power you exact model can proide - check the datasheet!

Jan 13, 2015 | Cisco Computers & Internet

1 Answer

Can you run a cico 2901 router with netgear fs728tp switches in a hybrid network environment?


Way make it so hard for yourself? The media converter may be trying to assign a DHCP address in addition to the router.



Hope this helps!

Sep 02, 2014 | NetGear FS728TP-100NAS 24-Port Ethernet...

1 Answer

The power devices that Cisco Catalyst 2960 Series Support?


The Cisco Catalyst 2960-48PST-L can support 48 PoE ports with total PoE power output capacity at 370W. Taking advantage of Cisco Catalyst Intelligent Power Management, the Cisco Catalyst 2960-48PST-L configuration can deliver the necessary power to support 24 ports at 15.4W, 48 ports at 7.7W, or any combination in between.

The Cisco Catalyst 2960-24PC-L can support 24 simultaneous full-powered PoE devices at 15.4W for maximum powered-device support.

The Cisco Catalyst 2960-24LT-L can support eight PoE devices at 15.4W
Cisco Catalyst 2960 Switches for the details

Aug 15, 2014 | Computers & Internet

1 Answer

I am trying to add an additional PoE device, put it will not power up. How can I tell the switch to power up a specific port, or put the switch into automatic mode?


Are you within the power budget?

Power feeding of Ethernet is limited for fixed 10BASE-T/100BASE-TX ports. The solution can provide maximum output power per PoE port up to 15.4W on 12 ports or 7.5W on 24 ports simultaneously. The Switch provides independent overload and short-circuit protection for each port, LED indicators for power status per PoE port, and supports IEEE802.3af MIB for Power over Ethernet functionality.
For each attached 802.3af-compliant device, the Switch automatically senses the load and dynamically supplies the required power. The Switch delivers power to a device using the two data wire pairs in the twisted-pair cable. Each port can provide up to 15.4W of power at the standard -48 VDC voltage.

Source: http://www.cisco.com/en/US/products/ps9967/products_qanda_item09186a0080a36afb.shtml

Mar 19, 2011 | Cisco Systems 24-Port SF 300-24P 10/100...

1 Answer

After unplugging the UTP cable the LED stays,Cisco 3560 Poe 48por


The light may stay on due to static in the switch. It will automatically go off after some time when the static gets discharged.

Apr 29, 2010 | Cisco Catalyst 3560-E 24-Port Gigabit...

2 Answers

Cisco IP phone 7941-- No power on the phone just a blank screen after I installed a headset, I did unplug the headset but is not coming back on.I also tried a new Ethernet cable but no luck. What can I do...


Is the phone connected to a POW (Power Over Ethernet)Cisco Switch? Check the model number of the switch with the Cisco web site www.cisco.com

Have you check whether there is power available on the switch?
enter "show power inline" at the command prompt.

Does the phone work without the head set?
Does the same thing happen when you plug in the head set on another phone?

Jun 18, 2009 | Cisco 7940 IP Phone

3 Answers

Inline power problem: cisco ip phone 7941G


You need to ensure that each port that has a phone plugged into it is configured with power over ethernet configured switched on.

Mar 20, 2008 | Cisco 7940 IP Phone

1 Answer

Netgear fs726tp and cisco phones


that the 7940 and 60
phones from Cisco do not support the IEEE 802.3af Power Over Ethernet
standard
they would work if you
simply reversed the polarity of 2 of the pairs of wire. i.e
by swapping 4 with 7, and 5 with 8 you could use a standard
POE injector to power the phone.
if you have a crimp tool and some cable laying around, you can give it
a whirl and it works. If you aren't familiar with making cable,
don't try this
Basically, you just wire one side of the cable as standard 568b
and then reverse 4 and 7, and 5 and 8 on the other side. Then,
simply plug your Cisco into a standard POE injector and Your phone works.

Nov 16, 2007 | NetGear ProSafe FS726TP Smart Switch...

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