EAP245 v3 - LAG (Link Aggregation Groups) Support?

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EAP245 v3 - LAG (Link Aggregation Groups) Support?

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EAP245 v3 - LAG (Link Aggregation Groups) Support?
EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-07-03 20:17:40
Model: EAP245  
Hardware Version: V3
Firmware Version: Latest

I was wondering since the EAP245 v3 has two ethernet ports.  I was assuming I can setup LAG on this, but I do not see the option on the AP.  Is this something supported, or will it eventually support this?  Thanks.

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#1
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-07-05 00:52:01

Hello @XOoET64oOX ,

 

EAP products don't support LAG function. 

 

The Second Gigabit Ethernet Port is used for Bridging, we have no plan to add this function for now. But we will add this to the suggestion list, thank you for your feedback.

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#2
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-10-02 01:01:24

@forrest 

I'd strongly second that Link Aggregation should be a considered feature on the 1750... there's no hardware reason not to smiley .

 

I, too, assumed that LAG was the only good reason for having the second port on a device marketed specifically as a ceiling mounted device, especially since PoE doesn't pass through to ETH2 (then daisy chaining an IP camera or something like that would make sense.  

 

 

 

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#3
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-10-02 10:23:19

 

avatarcraeft wrote

I'd strongly second that Link Aggregation should be a considered feature on the 1750... there's no hardware reason not to smiley . 

 

What do you expect from link aggregation on an EAP245?

 

A single 1000-BASE T interface gives you 1 Gbps full-duplex (i.e. 1 Gbps in both directions = 2 Gbps total) which covers maximum data throughput an AC1750 wireless device can achieve in half-duplex mode.

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#4
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-10-02 12:56:49

@R1D2 The AC1750 advertises 1300 mbps throughput... I want 1300 mbps.  https://www.tp-link.com/us/business-networking/ceiling-mount-access-point/eap245/

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#5
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-10-02 13:27:42 - last edited 2019-10-02 13:58:49

 

avatarcraeft wrote

@R1D2 The AC1750 advertises 1300 mbps throughput... I want 1300 mbps.  https://www.tp-link.com/us/business-networking/ceiling-mount-access-point/eap245/

 

You won't get that data throughput, no change. 1,300 Mbps is wireless speed, which has an overhead of ~30% (802.11n/ac) to ~50% (802.11a), so max. data throughput is theoretically 910 Mbps in ac mode @160 MHz channel width 2x2 MIMO (MCS 7) for 1,300 Mbps wireless speed or @80 MHz channel width in 3x3 MIMO (MCS 9). Since TCP/IP communication is bidirectional, the EAP must send and receive packets alternately, not simultaneously (b/c it's a half-duplex medium).

 

910 to 940 Mbps is what you get at maximum on a wired 1000-BASE T interface anyway, since TCP/IP also has an overhead of ~10%, but here you get it in two directions simultaneously, thus it's actually 1,820 Mbps.

 

Of course, even higher wireless speeds of a device compared to its wired speed is very useful, since it reduces the amount of AirTime the device need to achieve. Remember that WiFi is a shared medium, thus there is only one sender (SISO mode) or two senders (in 2x2 MU-MIMO mode) or three senders (in 3x3 MU-MIMO mode) at any given time, which can acquire the channel for sending/receiving. Thus, higher wireless speeds help to avoid congestion of the WiFi channel.

 

 

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#6
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-10-02 15:17:50

@R1D2 Yes, thanks for the refresher.  I appreciate the reminders on transmission speed and overhead, but, you kinda make my point.  Max throughput is hitting the top of the capabilties of a single ethernet connection without LAG, and therefore, there's no extra room for any management, logging, snmp overhead, etc. 

 

Just for more information, I have the AC1900.. your points of interest would apply to that one, too, effectively (same advertised throughput ratings, by the way), but, TP-Link had no problem including LAG in the software on that one.  Works great.. 

 

IMHO, there's just no good reason Not to allow the OS and network layer to determine the most efficient ways to handle the physical layer, and no good reason to Not allow LAG. 

 

 

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#7
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Re: EAP245 v3 - LAG (Link Aggregation Groups) Support?
2019-10-02 16:00:44

avatarcraeft wrote

Just for more information, I have the AC1900.. your points of interest would apply to that one, too, effectively (same advertised throughput ratings, by the way), but, TP-Link had no problem including LAG in the software on that one.  Works great..  

 

Yes, that's EAP330, which exceeds 1000-BASE T data speeds, so LAG makes sense for this device, agreed.

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#8
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Re:EAP245 v3 - LAG (Link Aggregation Groups) Support?
2020-11-06 20:01:20

@forrest any news on this ? It was requested long time ago and post ghosted as usual

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#9
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