Unable to get stable connection to the Internet via WAN port

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Unable to get stable connection to the Internet via WAN port

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Unable to get stable connection to the Internet via WAN port
Unable to get stable connection to the Internet via WAN port
2023-05-22 07:12:13 - last edited 2023-05-22 07:13:19
Model: ER605 (TL-R605)  
Hardware Version: V2
Firmware Version: ER605(UN)_V2_2.1.1 Build 20230115

Hi,

 

I have ER605 router with ER605(UN)_V2_2.1.1 Build 20230115 installed, and the WAN connection seems to be unavailable despite being connected physically and obtaining an IP address.

 

My WAN network has a 192.168.1.0/24 network, and ER605 has a 192.168.0.0/24 network. In theory, it should not be the case here.

 

But when I connect to it, either via Ethernet or via EP225, the result is always the same. I cannot reach out to the outside world in a stable manner. 

 

My main browser seems to be working fine, I am able to load everything, but whenever I open Safari or Firefox it is not able to load any webpage at all.

 

I checked that on two separate machines, and the results are exactly the same. The other machine, Firefox is able to load some webpages but APT is not able to resolve servers.

 

I have tried assigning a custom DNS server (1.1.1.1) either via DHCP or on the machine itself, no luck with that. I tried with the latest firmware and no luck with that as well. 

 

What is even more strange is that I am able on both machines execute traceroute and ping (domain) so I assume that I must have done something wrong with ER605 configuration.

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#1
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6 Reply
Re:Unable to get stable connection to the Internet via WAN port
2023-05-23 07:38:05

  @bartekvip 

 

Hi, a little bit weird, did you set the subnet mask as 255.255.255.0?

If you change the LAN IP to another like 192.168.10.0, any difference?

Just striving to develop myself while helping others.
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#2
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Re:Unable to get stable connection to the Internet via WAN port
2023-05-23 07:44:22

  @Virgo 

 

I have tried a network 192.168.10.0/24, and I am sure I set the 255.255.255.0 subnet mask. I am pretty sure that is the fault of ER605 because when I replaced it with my old TP-Link Archer C7, same setup, static WAN IP, 192.168.0.0/24 subnetwork, it worked flawlessly.

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#3
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Re:Unable to get stable connection to the Internet via WAN port
2023-05-23 08:15:22

  @Virgo 

 

I connected ER605 to my Archer router and this is my network setup.

 

 

I am connected via ethernet port. What is more strange I am able to post this message but speed test page does not load. Other websites are loading randomly.

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#4
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Re:Unable to get stable connection to the Internet via WAN port
2023-05-24 11:30:21

Is there any test I can perform to provide more information?

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#5
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Re:Unable to get stable connection to the Internet via WAN port
2023-05-25 03:35:51

  @bartekvip 

 

Have you tried Mac clone? Rebooting the modem and test it again.

 

Just striving to develop myself while helping others.
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#6
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Re:Unable to get stable connection to the Internet via WAN port
2023-05-26 16:55:49

  @Virgo 

 

I ran couple experiments and found interesting behaviour. When connected to ER605 and I ran apt update command on my Linux machine domain name is resolved to IPv4 but immediately it tires to connect to IPv6. When I ping that IPv6 I get network unreachable.

 

But when connected to my previous router, Archer, I do not get IPv6 but IPv4 and everything works. I suspect that there is some misconfiguration but ER605 has IPv6 WAN disabled and I disabled IPv6 network on m

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#7
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