Solution to DHCP Issues of Routers (ER605 | ER7206 | ER8411 | ER7212PC) [Closed on May 22nd 2023]

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
1212223...

Solution to DHCP Issues of Routers (ER605 | ER7206 | ER8411 | ER7212PC) [Closed on May 22nd 2023]

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
276 Reply
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-13 18:54:04

  @trak55 Lately, I have had the best stability from doing the following with the ER605 v1

 

  • Firmware 1.2.1 Build 20220512 Rel.76748
  • Ensure no overlap between IP addresses that are reserved and ones that are available via DHCP
  • Disable "Enable Load Balancing"
  • Disable "Enable Application Optimized Routing"
  • For Online Detection, set it to Manual with Ping and DNS lookup IP address of 1.1.1.1
  0  
  0  
#219
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-13 19:26:17
Thank you for this information. I may try these settings again after my wife finishes her work for the day. I did try those setting before and I was having an issue where both ISPs were active and failover would not work - it was continuing to use the failover ISP as if I had Load Balance checked. I'll try again with the 20220512 Build. Thanks!
  0  
  0  
#220
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-14 01:43:43

Dear @Loopo,

 

Thank you for your feedback. To better assist you, I've created a support ticket via your registered email address, and escalated it to our support engineer to look into the issue. The ticket ID is TKID230222822, please check your email box and ensure the support email is well received. Thanks!

>> Omada EAP Firmware Trial Available Here << *Try filtering posts on each forum by Label of [Early Access]*
  1  
  1  
#221
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-14 02:28:55 - last edited 2023-02-14 02:29:09

Dear @dsj,

 

Thank you for trying to share your experience here. Do you also have the DHCP issues with the ER605(UN)_v1_1.2.2_Build 20230118 (Beta)? If you have other issues or need any further assistance with the ER605, please feel free to start a new thread here, and try to elaborate on the problem so that we can better understand what happened and try to help you out.

>> Omada EAP Firmware Trial Available Here << *Try filtering posts on each forum by Label of [Early Access]*
  0  
  0  
#222
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-14 02:38:34

Dear @trak55,

 

Please kind note that “Enable Load Balancing” must be checked to make Link Backup configuration take effect. If the Online Detection still shows both WAN are online, you could set it to Manual and specify Ping and DNS lookup IP address for further checking.

 

How to configure Link Backup on Dual WAN Router

>> Omada EAP Firmware Trial Available Here << *Try filtering posts on each forum by Label of [Early Access]*
  0  
  0  
#223
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-14 03:21:00
Yesterday I ran into this issue for the first time after running the 1.2.0 firmware on the er 605 v1 since the day it was released. I downgraded to the 1.2.0 firmware. Will monitor this thread for a fix.
  0  
  0  
#224
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Feb 14th 2023]
2023-02-15 13:02:16

I've been using the er605 V1.2.2 20230208 firmware since the 10th of Feb and am happy to report not seeing anymore DHCP related issues.

 

 

Fae wrote

 

Update as of Feb 14th 2023:

 

Here are the new solutions to resolve the new DHCP issues we recently received in the community, including

 

1. DHCP Server failed to assign an IP address when a large number of clients make DHCP requests at the same time.

2. DHCP server failed to assign the correct reserved IP address to some clients.

 

Beta Firmware Download:

 

ER605(UN)_v1_1.2.2_Build 20230208 (Beta)

Beta Release Note:

Fixed all DHCP issues based on the official firmware 1.2.1 Build 20220512.

 

ER7206(UN)_v1_1.2.3_Build 20230208 (Beta)

Beta Release Note:

Fixed all DHCP issues based on the official firmware 1.2.3 Build 20221104.

 

Notes:

(1) Please be sure you have read the Beta Test Agreement before proceeding!

(2) The above Beta has added the fix for the DHCP Reservation issue mentioned HERE.

 

For ER605 V2, please check for the official firmware below to fix the DHCP issue.

 

ER605 V2_2.1.2 Official Firmware (Released on Feb 14th, 2023)

Note: the firmware is applied to ER605 V2 and V2.60.

 

For ER8411 v1 and ER7212PC v1, we'll provide the firmware to add the fix soon.

 

As always, thank you for working with our support engineers to address the issue with great cooperation.

And thank you all for your great patience when we're trying to figure out the issue and fix it!

 

 

OmadaLinux v5.13.10 R605 V1:1.3.0 - Build 20230511 R.51317 SG2008P V1:V1.0.8 Build 20230602 R.73473 SG2008P V3:V3.0.5 Build 20230602 R.73473 3 x EAP245 V3:V5.1.0-Build 20230104 R.79433
  0  
  0  
#226
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Feb 14th 2023]
2023-02-15 16:28:02 - last edited 2023-02-16 01:13:28

  @Fae  - This latest Beta, ER605(UN)_v1_1.2.2_Build 20230208 (Beta), stopped all internet access after I got a duplicate IP address warning from ESET.

  1  
  1  
#227
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Jan 30th 2023]
2023-02-16 01:11:47

  @Fae Yes I know that and it's enabled.

Fae wrote

Dear @trak55,

 

Please kind note that “Enable Load Balancing” must be checked to make Link Backup configuration take effect. If the Online Detection still shows both WAN are online, you could set it to Manual and specify Ping and DNS lookup IP address for further checking.

 

How to configure Link Backup on Dual WAN Router

 

  0  
  0  
#228
Options
Re: ER605 ER7206 v1 - DHCP Server May Fail With 1.2.0 and 1.2.1 Firmware [Updated on Feb 14th 2023]
2023-02-17 18:33:09
This update has fixed my VLAN DHCP issues! The static IPs that I assign will now stick as expected. Thank you!
  1  
  1  
#229
Options