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2nd WAN port on TL-ER5120 : cannot ping to attached router

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2nd WAN port on TL-ER5120 : cannot ping to attached router

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
2nd WAN port on TL-ER5120 : cannot ping to attached router
2nd WAN port on TL-ER5120 : cannot ping to attached router
2022-12-30 02:48:57 - last edited 2023-11-10 06:52:11
Model: TL-ER5120  
Hardware Version: V2
Firmware Version: 1.0.8 Build 20140212 Rel.36037

I have 2 robustel 4G routers #1, #2.

 

I configure 2 WAN interfaces on ER5120 WAN#1 and WAN#2

 

I connect robustel #1 to WAN#1 of ER5120 and i can ping from ER5120 to robustel#1 and vice versa.

But when i connect robustel #2 to WAN#2 of ER5120, i cannot ping from ER5120 to robustel#2.

The error message on ER5120 when using the diagnostic tool of ER5120: The IP address of current port cannot be got, please check and try again.

Neither can i ping from robustel#2 to ER5120.

 

This is my setup:

 

ER5120

System mode : Classic

WAN#1 ip 192.168.0.10 (static ip)

default gateway 192.168.0.1

 

WAN#2 ip 192.168.2.10 (static ip)

default gateway 192.168.2.1

 

Robustel#1 ip 192.168.0.1

Robustel #2 ip 192.168.2.1

 

Is there any other settings in ER5120 i need to enable for the WAN#2 port to function?

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4 Reply
Re:2nd WAN port on TL-ER5120 : cannot ping to attached router
2022-12-30 03:28:21 - last edited 2023-11-10 06:51:58

I did some checks using Maintenance->Diagnostics:

 

1. When i connect Robustel#1 to WAN#1, it shows "WAN1 : WAN is online". When I connect Robustel#2 to WAN#2, it shows "WAN 2: Online detection failed"

 

2.If i now disconnect Robustel#1 from WAN#1 it shows "WAN1 : physical connection is off", and "WAN 2: WAN is online".

 

How come i cannot simultaneously connect 2 ISP routers to TL-ER5120?

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Re:2nd WAN port on TL-ER5120 : cannot ping to attached router
2022-12-30 09:09:29 - last edited 2023-11-10 06:52:01

  @JackyBek 

 

It seems like here is the IP conflict in your network.

 

Suggest you change the ER5120 LAN IP to another subnet to test, for example 192.168.10.1/24.

Just striving to develop myself while helping others.
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Re:2nd WAN port on TL-ER5120 : cannot ping to attached router
2022-12-30 09:26:00 - last edited 2023-11-10 06:52:01
Thanks. I solved the issue due to a conflict of rules in the 4g wireless router. I have another question regarding port triggering feature.is it the same as port forwarding ?
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Re:2nd WAN port on TL-ER5120 : cannot ping to attached router
2023-06-01 13:58:18 - last edited 2023-11-10 06:52:01

  @JackyBek 

Hi,

To troubleshoot the issue with the second WAN port (WAN#2) on your TL-ER5120 router in ClassicClassic mode, here are a few suggestions:

  1. Verify physical connections.
  2. Check IP configuration for WAN#2.
  3. Confirm robustel#2 router configuration.
  4. Enable WAN#2 interface in TL-ER5120 settings.
  5. Consider updating the router's firmware.

If the issue persists, consult the user manual or contact technical support for further assistance.

Best regards,

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