TP-Link Long Range Outdoor Wifi Transmitter – 5GHz, 300Mbps
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I have installed a TP link range extencder and its has great range. I have connected it via a Netgear 1gbps switch to a linkysys router and that is fed by a 900mbps fibre connection. With auto negotiate enabled the switch communicates with the TP link and sets the port speed at 100 mbps. How can I get closer to the 300mbps. Do I enable 100mbs Full (duplex) to achieve 200mbps, or is I turn of auto and set the switch to 1000 mbps will it then operate at 300mbps? Cables are CAT6 1000mbps rated.
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Jer_WeirCottage wrote
How can I get closer to the 300mbps.
You can't.
A CPE510 offers 300 Mbps half duplex WiFi throughput, which equals ~210 Mbps goodput (~ 70%) over 802.11n @ 40 MHz channel width (still half duplex).
Full duplex Ethernet throughput is 100 Mbps meaning the real world goodput is about 90 to 95 Mbps (~90% to 95%) over the wire per direction at the same time T. In other words: a 100 Mbps interface can send and receive at 2 × 100 Mbps = 200 Mbps at given time T.
To get the same throughput (200 Mbps) over a half duplex medium in the same time T, you need 200 Mbps wireless goodput. With WiFi protocol overhead this requires 300 Mbps WiFi throughput.
Thus, to get 100 Mbps full duplex Ethernet throughput over WiFi you need a N300 access point with 300 Mbps half duplex WiFi throughput at least. If the CPE510 would have a Gigabit Ethernet interface, total throughput would still be limited to 100 Mbps full duplex.
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R1D2 is absolutely correct (as usual). If the CPE only has a 100Mbit/s Ethernet jack that is all it do in any one direction -- e.g. 90-95 Mbit/sec or roughly 10-12 MB/s.
Still, in 2020, having such a product with only a 100 Mbit/sec port seems odd / short sighted. A gigabit port is maybe $1 to $5 more (I'm being generous) from a BOD perspective.
While R1D2's calculations are technically correct, the reality is that most WiFi traffic is not evenly split DL/UL. So, given an airlink of 300, and a "good put" of 200. Most clients will be DL the majority of the time (streaming case). Or UL most of the time (cloud backup, posting case).
So IMHO, it would make sense for a future hardware revision of this product to have a gigabit link so that peak download or upload (unidirectionally) of up to 150 to 200 Mbit/sec could be accommodated.
Alternatively you could use multiple CPEs and load balance them with switches on either side of the air link. Or consider a different higher performance / more expensive product.
-Jonathan
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JSchnee21 wrote
While R1D2's calculations are technically correct, the reality is that most WiFi traffic is not evenly split DL/UL. So, given an airlink of 300, and a "good put" of 200. Most clients will be DL the majority of the time (streaming case). Or UL most of the time (cloud backup, posting case).
So IMHO, it would make sense for a future hardware revision of this product to have a gigabit link so that peak download or upload (unidirectionally) of up to 150 to 200 Mbit/sec could be accommodated.
You won't achieve 200 Mbps using TCP if the client is just downloading. Sent packets must be acknowledged and for this acknowledge, the sending direction has to be reversed (which is not a fast operation over a wireless link).
AFAIK, the new CPE710 will support wireless AC mode and has a Gigabit interface. But it is not yet available.
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JSchnee21 wrote
R1D2 is absolutely correct (as usual). If the CPE only has a 100Mbit/s Ethernet jack that is all it do in any one direction -- e.g. 90-95 Mbit/sec or roughly 10-12 MB/s.
Still, in 2020, having such a product with only a 100 Mbit/sec port seems odd / short sighted. A gigabit port is maybe $1 to $5 more (I'm being generous) from a BOD perspective.
While R1D2's calculations are technically correct, the reality is that most WiFi traffic is not evenly split DL/UL. So, given an airlink of 300, and a "good put" of 200. Most clients will be DL the majority of the time (streaming case). Or UL most of the time (cloud backup, posting case).
So IMHO, it would make sense for a future hardware revision of this product to have a gigabit link so that peak download or upload (unidirectionally) of up to 150 to 200 Mbit/sec could be accommodated.
Alternatively you could use multiple CPEs and load balance them with switches on either side of the air link. Or consider a different higher performance / more expensive product.
-Jonathan
Thanks for the explanation given. I just wanted to check I wasn't missing something. I agree 1gbps network cards are only £5 so it would be good to fit one. Meantime it's got great range (5km) so it does the job until I upgrade. Grateful for you sharing knowledge. Any recommendations for an external 1gbps WiFi access point with a range of 250m? @JSchnee21
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Thanks for your clear explanation. I am grateful. Can you recommend a 1gbps external WiFi access point with a range of 250m? @R1D2
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@Jer_WeirCottage, the point is not the £5 Gigabit interface, but the wireless technology (802.11).
If you want a Gigabit wireless link, you need to change wireless technology.
For example, we use 24 GHz airFiber-24, which have two radios per AP to get 1.4 Gbps full-duplex at <1ms latency over distances from 500m to ~13km.
Pretty expensive gear (3,000 € for a pair), but awesome goodput of 1 Gbps over 1.4 Gbps full-duplex (!) wireless link.
90% of the time for setup is antenna alignment between the two APs.
However, there are cheaper 802.11 APs available on the market which have a Gigabit interface and AC throughput, but half-duplex only.
As for the upcoming CPE710 see here.
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Wow, R1D2, those are nice. Amazon has them in the US for $1417 USD, each.
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@JSchnee21, yes, this are nice systems and the 24 GHz band is still not overcrowded.
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