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ER605 Not able to provided full ISP Speed in Wan 1

ER605 Not able to provided full ISP Speed in Wan 1

ER605 Not able to provided full ISP Speed in Wan 1
ER605 Not able to provided full ISP Speed in Wan 1
Yesterday
Tags: #Load Balancing
Model: ER605 (TL-R605)  
Hardware Version: V2
Firmware Version: 2.3.3 Build 20251029 Rel.18054

 

I am writing to request technical support for a speed issue I am experiencing with my ER605 router.

 

My current setup includes three WAN connections:

 

- WAN 1: 1000 Mbps

- WAN 2: 300 Mbps

- WAN 3: 100 Mbps

 

WAN 1 and WAN 2 are configured as primary WANs, while WAN 3 is set as a backup.

 

The issue is specific to WAN 1. When I connect my ISP modem directly to my computer, I consistently receive speeds between 900 and 950 Mbps. However, when I connect the same modem to the WAN 1 port of the ER605 and connect my computer to the ER605 LAN port, the speed drops to 600–650 Mbps.

 

To isolate the problem, I disconnected all switches and other devices during testing, but the speed remained capped at 650 Mbps. Please note that WAN 2 and WAN 3 are delivering their expected speeds; the throughput issue is exclusive to WAN 1.

 

Could you please assist me in troubleshooting why the ER605 is not delivering the full throughput of my WAN 1 connection?

 

 

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Re:ER605 Not able to provided full ISP Speed in Wan 1
18 hours ago

Hi  @Vishlamba 

Thanks for posting in our business forum.

May I ask when you test the speed from WAN 1, did you disconnect the WAN 2and WAN 3?

If WAN 2 and WAN 3 both display the proper speed with the Internet bandwidth, did you try to connect the original WAN 1 modem to different WAN ports for test?

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#2
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Re:ER605 Not able to provided full ISP Speed in Wan 1
13 hours ago

  @Vishlamba 

 

If you have DPI / Application Control enabled this will impact throughput significantly as every single packet is being examined by the DPI engine.  Otherwise, i have achieved full 1gig speeds through ER605 v2 easily in my tests

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