ER605 - No Internet Access for Switch and Router but End Devices Online.

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ER605 - No Internet Access for Switch and Router but End Devices Online.

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
ER605 - No Internet Access for Switch and Router but End Devices Online.
ER605 - No Internet Access for Switch and Router but End Devices Online.
2024-02-22 06:20:29 - last edited 2024-02-22 06:24:12
Model: ER605 (TL-R605)  
Hardware Version: V2
Firmware Version: 2.2.4 Build 20240119 Rel.44368

Hello,

I'm encountering a connectivity issue where neither my switch nor my router can access the internet directly. While my switch can successfully ping the router, showing that local network connectivity is intact, it cannot ping any external IP addresses on the web. My router can ping the web from its WAN interface but fails to do so from its LAN interface. Interestingly, all my end devices connected to the network do have internet access. Is this by design ?


This peculiar situation directly impacts my ability to set up NTP on my switch, as neither the switch nor the router seems to have proper internet access despite a clear route to the internet from the router's WAN side and functioning internet access for end devices.

Additionally, my network is configured with multiple VLANs, and I have not made any changes to the NAT settings on my router. My router uses the local NTP server address 0.0.0.0, ensuring its time is synchronized, but the switch, unable to use NTP on the web, it can only synchronize to the PC clock.


Given this scenario, I'm at a bit of a loss and could really use some advice or suggestions on how to tackle this issue, do I need a static route ? Has anyone experienced something similar or have any insights on what might be going wrong and how to fix it?

 

Any help would be greatly appreciated!

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#1
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4 Reply
Re:ER605 - No Internet Access for Switch and Router but End Devices Online.
2024-02-22 06:23:24

Hi @Pouet 

Thanks for posting in our business forum.

My question will be is your router on default setup?

Second, what does your VLAN look like? Getting IP, so I assume you have set up the VLAN correctly. Consider multi-net NAT?

Use any search engine?

Best Regards! If you are new to the forum, please read: Howto - A Guide to Use Forum Effectively. Read Before You Post. Look for a model? Search your model NOW Official and Beta firmware. NEW features! Subscribe for the latest update!Download Beta Here☚ ☛ ★ Configuration Guide ★ ☚ ☛ ★ Knowledge Base ★ ☚ ☛ ★ Troubleshooting ★ ☚ ● Be kind and nice. ● Stay on the topic. ● Post details. ● Search first. ● Please don't take it for granted. ● No email confidentiality should be violated. ● S/N, MAC, and your true public IP should be mosaiced.
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#2
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Re:ER605 - No Internet Access for Switch and Router but End Devices Online.
2024-02-22 07:26:59

  @Clive_A 

Thanks for the response!


- My router isn't on the default setup; I've customized it for my network needs.
- I have multiple VLANs with DHCP enabled.

- I haven't explicitly set up multi-net NAT.
- I use 8.8.8.8 for testing.

- My Vlans : 
 

  • ID 1: VLAN ID 1, Name: vlan1, Ports: 3 (UNTAG), 4 (TAG), 5 (TAG)
  • ID 2: VLAN ID 15, Name: vlan15, Ports: 4 (TAG)
  • ID 3: VLAN ID 25, Name: vlan25, Ports: 4 (TAG)
  • ID 4: VLAN ID 35, Name: vlan35, Ports: 4 (TAG)
  • ID 5: VLAN ID 55, Name: vlan55, Ports: 4 (TAG)
  • ID 6: VLAN ID 4094, Name: vlan4094, Ports: 1 (UNTAG), 2 (UNTAG)

     

    - Port 1
      - PVID: 4094
      - VLAN: 4094 (Untagged)

    - Port 2
      - PVID: 4094
      - VLAN: 4094 (Untagged)

    - Port 3
      - PVID: 1
      - VLAN: 1 (Untagged)

    - Port 4
      - PVID: 1
      - VLANs: 1 (Tagged), 15 (Tagged), 25 (Tagged), 35 (Tagged), 55 (Tagged)

    - Port 5
      - PVID: 1
      - VLAN: 1 (Tagged)

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#3
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Re:ER605 - No Internet Access for Switch and Router but End Devices Online.
2024-02-22 07:43:29

Hi @Pouet 
Thanks for posting in our business forum.

Pouet wrote

  @Clive_A 

Thanks for the response!


- My router isn't on the default setup; I've customized it for my network needs.
- I have multiple VLANs with DHCP enabled.

- I haven't explicitly set up multi-net NAT.
- I use 8.8.8.8 for testing.

- My Vlans : 
 

  • ID 1: VLAN ID 1, Name: vlan1, Ports: 3 (UNTAG), 4 (TAG), 5 (TAG)
  • ID 2: VLAN ID 15, Name: vlan15, Ports: 4 (TAG)
  • ID 3: VLAN ID 25, Name: vlan25, Ports: 4 (TAG)
  • ID 4: VLAN ID 35, Name: vlan35, Ports: 4 (TAG)
  • ID 5: VLAN ID 55, Name: vlan55, Ports: 4 (TAG)
  • ID 6: VLAN ID 4094, Name: vlan4094, Ports: 1 (UNTAG), 2 (UNTAG)

     

    - Port 1
      - PVID: 4094
      - VLAN: 4094 (Untagged)

    - Port 2
      - PVID: 4094
      - VLAN: 4094 (Untagged)

    - Port 3
      - PVID: 1
      - VLAN: 1 (Untagged)

    - Port 4
      - PVID: 1
      - VLANs: 1 (Tagged), 15 (Tagged), 25 (Tagged), 35 (Tagged), 55 (Tagged)

    - Port 5
      - PVID: 1
      - VLAN: 1 (Tagged)

After reading that article, do you have any ideas about what might be wrong? Anything that we may discuss here?

And what do you think I can make of your current information? You seem to be certain that your switch is configured correctly?

4094 is the system created VLAN for Internet. WAN.

Best Regards! If you are new to the forum, please read: Howto - A Guide to Use Forum Effectively. Read Before You Post. Look for a model? Search your model NOW Official and Beta firmware. NEW features! Subscribe for the latest update!Download Beta Here☚ ☛ ★ Configuration Guide ★ ☚ ☛ ★ Knowledge Base ★ ☚ ☛ ★ Troubleshooting ★ ☚ ● Be kind and nice. ● Stay on the topic. ● Post details. ● Search first. ● Please don't take it for granted. ● No email confidentiality should be violated. ● S/N, MAC, and your true public IP should be mosaiced.
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#4
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Re:ER605 - No Internet Access for Switch and Router but End Devices Online.
2024-02-22 08:07:48

  @Clive_A 
I think it's not about NAT, since my end devices have internet access, but it could be related to how administrative traffic is routed or how the router/switch are allowed to access external resources. It might be an issue with an ACL. I will check again.

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#5
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