AP1130 speed is enough to support the conference meeting?

[wfqk]

Hi about ten people in the conference room using the AP1130, which is about 20 or 30 feets away from the users. Some user get the speed at 8Mbps sometime. and user feel the speed is slow. Not sure if this is wireless issue. Any one can give some suggestion?  Thank you

[Scott Fella · Accepted solution]

Well an 1130 is an 802.11abg access point. Depending on the usage of the 30 devices and the RF around that area, that might be what you would see. 54Mbps and since Wireless is half duplex, you have around 27Mbps max throughput. Divide that by the number of users and that would be your min throughput. You would rather replace that with an 802.12ac access point so that users can get the experience close to what they probably see at home.

[wfqk]

Thank you so much for your reply. We would like to replace it with AP3500. AP3500 throughput is upto 300Mbps, and it is dual-band. You mentioned 1130 is half duplex. I am not sure there is any relation between the dual-band and the half duplex? Can you answer it? Thank you

[Leo Laohoo · Accepted solution]

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@wfqk wrote:

I am not sure there is any relation between the dual-band and the half duplex? 

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Wireless is a half-duplex medium:  One talks and others wait for their turn. 

There's is currently a promo:  Cisco's WiFi Promo: Buy 2, get 1 FREE.  Have a look at it.

Also, the issue doesn't have a "clear picture":

1.  What kind of clients are these? 

2.  What were they trying to do that they were able to observe the wireless network to be "slow"?

3.  What radio were the clients connected to when they said they were "slow"?

4.  This is important:  What is the EXACT model of the AP?  Is this the AP with 2.4 Ghz only radio or the one with 2.4 Ghz & 5.0 Ghz radio? 

5.  What is the uplink speed and duplex settings found in the switch port?  Full duplex or half duplex? 

6.  Co-channel interference?

[patoberli]

Don't get the AP3500. That model is already ~7 years old and has (or will very soon) reached it's EoL. Also the 802.11ac models come with a nice Mobility Express software, which is great for smaller companies and fairly easy to configure.

[Scott Fella]

Like what the others mentioned already, all Wireless is half duplex except for some outdoor bridges that are full duplex because of two radios per band. You should really look into a new design which would include a controller (3504) is its a small under 150 access point requirement. Use the newer access points as that will give you the best performance and would last you for years. Mobility Express would also work, but folks have been having some issues when you compare it to a controller. So my opinions that you don’t just bandaid the situation, but design it right for the environment you have. That would mean a higher density of access points, proper location and newer AP’s with controller.

[wfqk]

Hi Scott, 

I would like to make sure two questions for your comments as it is half duplex:

We suppose only one user is using the AP(for example, AP1131), which has the maximum speed 54Mpbs, 

1. if we use speedtest.net to test the speed at this user side, it would be 54Mpbs or 27Mpbs?

2. If this speedtest.net shows it is 54Mpbs, the actual speed for the user would be 27Mpbs? Thank you

[Scott Fella]

That is correct. What your device negotiate at, example 54Mbps, the theoretical max throughput would be around 27Mbps.

[wfqk]

That means if the user is using some web site, for example, speedtest.net to test the speed, it would show the maximum speed is at 27Mpbs, right? 

[Scott Fella]

No... test with IPerf locally at the site and that should show you around 27Mbps.

[Scott Fella]

Remember that this is theoretically the max. If your RF is poor due to interference or co-channel, you might not achieve that.

Just test with IPerf and web speed test to give you an idea of what your AP is capable of.

[wfqk]

Thank you so much for your explanation!