iperf3 was used to measure the throughput of the Synology RT2600ac on wired, 2.4 GHz and 5 GHz. The following iperf3 parameters were used for the tests:
|Upload||iperf3 -c <iperf3 server> -w 640k -P 5 -t 60|
|Download||iperf3 -c <iperf3 server> -w 640k -P 5 -t 60 -R|
The following equipments were used for the speed test:
|Router|| Synology RT2600ac on 1.1.3-6447|
AC2600 (2.4 GHz: 800 Mbps, 5 GHz: 1733 Mbps)
|iperf3 server||iperf3 server docker container on Synology DS1515+|
|iperf3 client||iMac 27" (mid-2011) with D-Link DIR-890L as wireless client|
|Wireless Client|| DIR-890L on dd-wrt|
AC3200 (2.4 GHz: 600 Mbps, 5 GHz: 1300 Mbps + 1300 Mbps)
The iperf3 server is connected to the WAN/Internet side of the Synology RT2600ac while the iperf3 client is on the LAN side of the Synology RT2600ac. The wireless client is placed 3 meters away from the Synology RT2600ac.
The speed test for wireless on 2.4 GHz and 5 GHz spectrum will be limited to 600 Mbps and 1300 Mbps. Hence, the results will be better with a matched wireless client.
Using the DIR-890L as wireless client
As I do not have a compatible wireless client for the testing, I decided to make use of the DIR-890L as a wireless client instead. So my testing client is hooked up to the 1 Gbps LAN port for the entire wireless test.
WAN-LAN (wired without Traffic Control)
In this test, the Synology RT2600ac managed to clock 940 Mbps and 942 Mbps for upload and download respectively. This is also a baseline test to ensure the testing endpoints do not bottleneck the speed test.
WAN-LAN Speed Test (Traffic Control Enabled)
The RT2600ac’s throughput is unaffected even when traffic control is enabled. Great!
Packet filtering or Traffic Control often impacts the throughput as it needs to inspects the packet or limit the flow rate according to some configured rules. Hence, traffic control was enabled to see if the RT2600ac is affected in terms of throughput.
I am glad to know that the RT2600ac’s throughput is not affected even when traffic control is enabled. It managed to clock 940 Mbps and 942 Mbps for upload and download respectively.
WAN-LAN Speed Test (with Intrusion Prevention System enabled)
Intrusion Prevention System (IPS) is one of the packages that you can add to the RT2600ac via the Package Center. There are two modes of operations – ‘Detect’ or ‘Prevent’.
The settings used for the IPS in this test are:
In ‘Detect’ mode, the Synology RT2600ac clocked 302 Mbps and 599 Mbps for upload and download respectively. The CPU and memory utilisation was observed to be higher during the transfer. The CPU utilisation, in particular, was almost maxed out while memory usage hovered around 60%.
In ‘Prevent’ mode, the Synology RT2600ac clocked 49 Mbps and 71.3 Mbps for upload and download respectively. The CPU and memory utilisation was also observed to be higher during the transfer. The CPU utilisation, in particular, almost maxed out while memory usage hovered around 60%.
Wireless on 5 GHz spectrum
As mentioned earlier, the speed will be limited by the wireless client (limited to 1300 Mbps).
On the 5 GHz wireless spectrum, the Synology RT2600ac clocked 406 Mbps and 485 Mbps for upload and download respectively.
Wireless on 2.4 GHz spectrum
As mentioned earlier, the speed will be limited by the wireless client (limited to 600 Mbps).
On the 5 GHz wireless spectrum, the Synology RT2600ac clocked 161 Mbps and 125 Mbps for upload and download respectively.
Speed Test Summary
|Test||Upload (Mbps)||Download (Mbps)||Notes|
|Wired (Traffic Control enabled)||940||942|
|Wired (IPS enabled – 'Detect')||302||599|
|Wired (IPS enabled – 'Prevent')||49||71.3|
|Wireless 5 GHz||406||485||Wireless client is limited to 1300 Mbps|
|Wireless 2.4 GHz||161||125||Wireless client is limited to 600 Mbps|
Unlike the RT1900ac, the Synology RT2600ac‘s throughput is unaffected when traffic control is enabled. Now, it is possible to rate-limit certain clients without impacting the overall throughput.