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POE+ on R710 and SG300-10MPP

an_nguyen_cl022

Hi all,

I've buy the Cisco SG300-10MPP for 3 R710, two of devices support 802.3at POE+

But when i use command "get power-mode" on R710. The result display R710 is running in 802.3af mode.
Please help me to find the solution, that will make our R710 can running 802.3at with SG300-10MPP

Many thanks!

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an_nguyen_cl022

Can anyone help me?
Thanks a lot

michael_brado

Does SCG300-10MPP support LACP and LLDP?

unknown

Yes, the SG300-10MPP supports LACP and LLDP according to the Cisco support page. Make sure you have the latest firmware.

an_nguyen_cl022

Hi Michael,

SG300 support all LACP and LLDP.
But why we need LACP here? In my thought, Ruckus and Cisco will discussion about Power via LLDP

Thanks!

an_nguyen_cl022

I've upgrade the lastest firmware for my switch
Does i need config anything, or it will work by default?

unknown

I believe the smartport function will automatically detect it. With the R710, I believe with certain switches it has to be enabled manually to use 802.3at. Under Administration Settings there should be a section for LLDP.

Alan

an_nguyen_cl022

Hi Michael,

I need config R710 running 802.3at by manual,
But, our switch only support 15.4W per port, Can R710 running 802.3at with 15.4W

unknown

There are specific differences between 802.3at and 802.3af and they are not compatible. Here is a quick read: http://blog.antaira.com/poe-802-3at-vs-802-3af/

The R710 specifically requires: •802.3af power mode option allowing to leverage legacy PoE switches and to easily deploy

https://www.ruckuswireless.com/products/access-points/zoneflex-indoor/zoneflex-r710

The ability for you to use the r710 on your 300 depends if it is capable of supplying 802.3af Please note the very last sentence.

Power over Ethernet: Cisco 300 Series Switches are available with up to 48 PoE ports of Fast Ethernet or Gigabit Ethernet connectivity. This capability simplifies advanced technology deployments such as IP telephony, wireless, and IP surveillance by allowing you to connect and power network endpoints over a single Ethernet cable. With no need to install separate power supplies for IP phones or wireless access points, you can take advantage of advanced communications technologies more quickly, and at a lower cost. Some models support both IEEE 802.3af PoE and IEEE 802.3at PoE+ while others support IEEE 802.3af PoE only

http://www.cisco.com/c/en/us/products/collateral/switches/small-business-smart-switches/data_sheet_c...

unknown

We also have R710's and have the same issue too with the SG300-10MPP switch.

We're running the latest firmware on the switch (1.4.5.02), have LLDP enabled, have the PoE-PSE Optional TLVs on every port enabled too (with the corresponding LLDP MED Status checkbox enabled).

As a workaround I've been forcing 802.3at by using the set power-mode AT directly on the access point CLI. Once you type the command it will take a few minutes for the status to update. You will notice the power draw stats on the SG300-10MPP will update too.

Hope this info helps!

an_nguyen_cl022

Hi k3vin

I've found that way yesterday. But in cisco document, SG300-10MPP only support 15.4W per port.

Does R710 working well with this power?Did you have any issues happen with this?

unknown

Hi,

According to Cisco's datasheet for the SG300-10MPP:

Maximum power of 30.0W to any 10/100 or Gigabit Ethernet port for PoE+ supported devices and 15.4W for PoE supported devices

So the SG300-10MPP provides 30W max (per port) if the device is in 802.3at mode

So far it's been working good so far. However, if the AP is rebooted for any reason you need to use the set power-mode AT again

an_nguyen_cl022

Hi k3vin,

Thanks a lot for your information!

andrea_coppini

Turn on LLDP and all the related options on the Sg300. The AP uses LLDP to negotiate power mode with the switch, which (I think) is turned off by default on the SG300.

You may also need to enable LLDP on the AP in the AP group, model specific options settings.