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Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0

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Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0

Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-12 10:23:42 - last edited 2025-05-12 10:33:51

Got a strange one with my WAN traffic graph, dashboard widget ("ISP Load") on my ER7206 v2 running 2.2.0 latest

 

The graph constantly reports a WAN latency of 1ms, completely flat

 

Echo server is ON, and tried both Auto and an external IP

 

Online detection is active, set to 5 minutes

 

 

 

I do not see this problem with ER8411 (on the now revoked 1.3.0) or ER605v2 on 2.3.0 and the same setting on those sites.

 

OC300 5.15.20.38

I factory reset and re-adopted the router a couple days ago to see if that cleared it and it did not, also factory reset the controller and restored backup, no change

 

I dont have any issue with WAN connectivity on the router, its jsut this graph that is acting up

Main: ER8411 x1, SG3428X x1, SG3452 x1, SG2428LP x1, SG3210 x1, SG2218P x1, SG2008P x3, ES208G x1, EAP650 x6 Remote: ER7206 v2 x1, ER605 v2 x3, SG2008P x2, EAP650 x2, ES205G x1 Controller: OC300
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#1
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13 Reply
Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-12 13:19:57
I have exactly the same issue-ER7206 v2
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#2
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-13 02:51:58

  @GRL 

 

A 1ms delay should have no noticeable impact on network usage. Now that 1ms delay persists flattly, it might be caused by a hardware connection issue, such as:

  • The Ethernet cable connected to the WAN port.
  • The WAN port itself on the ER7206.
  • The Ethernet port or other hardware tiny defect on the front modem.

 

Recommended steps:

  1. Replace the Ethernet cable.
  2. Try a different WAN port on the ER7206.
  3. Try a different ethernet port on the modem (if any).
Wish you a happy life and smooth network usage!  >Get the Latest Omada SDN Controller Releases Here< >Experience the Latest Omada EAP Firmware<
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#3
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-13 02:53:27

Hi  @hollidayjr 

 

Is it exact same on your site? 

 

Apart from the suggestion I provided above, could you please share a screenshot of the latency page on your controller?

Wish you a happy life and smooth network usage!  >Get the Latest Omada SDN Controller Releases Here< >Experience the Latest Omada EAP Firmware<
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#4
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-13 05:22:02 - last edited 2025-05-13 05:41:55

  @Vincent-TP 

 

Hi Vincent

 

I think i didnt explain properly

 

the 1ms latency (flat, unchanging) is impossible.  Unless one.one.one.one (who i set as echo server) have their datacentre in my building, which i would probably notice, it should be reporting in the 20-30ms range as is typical for my ISP, like the graph i posted from my ER8411

 

Evidently, one of two things is wrong here

 

1 - the router is reporting this 1ms incorrectly

2 - the controller isnt reading or getting the right info from the router which i think is more likely.  

 

If i ping the same echo server IP i configured from the ER7206 v2 using the controller network tools page, i get the expected delay times

 

Main: ER8411 x1, SG3428X x1, SG3452 x1, SG2428LP x1, SG3210 x1, SG2218P x1, SG2008P x3, ES208G x1, EAP650 x6 Remote: ER7206 v2 x1, ER605 v2 x3, SG2008P x2, EAP650 x2, ES205G x1 Controller: OC300
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#5
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-13 13:43:34

  @Vincent-TP 

Yes, mine shows exactly the same with the same setup as posted. I have dual wan and it is same on both wans. I upgraded this 7206 from a er605 about two weeks ago and it worked normally with the 605 on both wans.

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#6
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-14 02:13:04 - last edited 2025-05-14 02:14:17

Hi  @GRL 

 

Sorry for the misunderstanding before. Now it's clear to me.

 

We just released a new pre-release software controller version  5.15.24.14, would you mind updating to it and see if the wrong display persist?

 

Below is the link:

Omada SDN Controller_V5.15.24 Pre-Release Firmware (Update on 14th May, 2025)

 

Wish you a happy life and smooth network usage!  >Get the Latest Omada SDN Controller Releases Here< >Experience the Latest Omada EAP Firmware<
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#7
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-14 02:13:40

Hi  @hollidayjr 

 

Thanks for the clarification.

 

As I mentioned above, 

We just released a new pre-release software controller version  5.15.24.14, would you mind updating to it and see if the wrong display persist?

 

Below is the link:

Omada SDN Controller_V5.15.24 Pre-Release Firmware (Update on 14th May, 2025)

Wish you a happy life and smooth network usage!  >Get the Latest Omada SDN Controller Releases Here< >Experience the Latest Omada EAP Firmware<
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#8
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-14 06:33:08

  @Vincent-TP 

 

Will test once the hardware controller version is released. 

 

 

Main: ER8411 x1, SG3428X x1, SG3452 x1, SG2428LP x1, SG3210 x1, SG2218P x1, SG2008P x3, ES208G x1, EAP650 x6 Remote: ER7206 v2 x1, ER605 v2 x3, SG2008P x2, EAP650 x2, ES205G x1 Controller: OC300
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#9
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-14 14:52:20
Just finished updating to V5.15.24 and the latency graph shows the same 1ms straight line reading for both wans. This is with the software controller
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#10
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Re:Weird issue with WAN latency graph on dashboard widget, ER7206 v2 2.2.0
2025-05-15 19:46:46 - last edited 2025-05-15 19:59:45

Hello,

 

I can confirm it's a bug related to the firmware 2.2.0 of the ER7206 as I noticed it in january.

First : I purchased the ER7206 on december 2024. It was delivered with firmware 2.1.2 and the latency was fine (not 1ms flat).
On January 2025 I upgraded to early 2.2.0 to test "DNS LAN" (which is not a local hostname resolution now I mention it and useless in my useccase, I was serching for client names resolution) and perfomance optimizations.

Just after the the upgrade : I noticed that ISP load showed a 1ms flat graph (I didn't  reported it because I thought a patch will come soon but you don't seem to know it).

As proof : I downgraded my ER7206 to 2.1.2 few hours today to show you it's firmware 2.2.0 the problem.
In 2.2.0 latency was 1ms flat. After downgrade, latency seemed well fluctuing behing 10ms. After reupgrading to 2.2.0, flat 1ms latency is back
 

Approximative time of downgrade on v2.1.2 firmware : 5h30m

 

 

Results on ISP Load :

 

Results on perfs (for information) :

 

Zoomed :

 

 

 

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#11
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