Help with log reading

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[ibe98765]

I am using a TPLink AX55 router.  As part of trying to resolve the issues below, I got TPLink to issue an RMA for a replacement device, which made no difference.

I switched net providers recently from Comcast to Sail and ran into some router problems.  The first problem I discovered was that Sail doesn’t offer IPv6 in my area so I was forced to change back to IPv4 only.

Then the 2nd problem was that I was getting intermittent network disconnects that would last for 30 seconds to 15 minutes or so.  Most common was times of 3-7 minutes.  A sample log disconcert/connect sequence looks like this.  This one represents a 45 second outage (begin to end):

2024-04-29 14:54:53 Led Controller INFO [1118] Start to run WAN1_ON
2024-04-29 14:54:53 Led Controller INFO [1118] Start to run WAN0_OFF
2024-04-29 14:54:53 Led Controller INFO [1118] Start to run LAN_ON

2024-04-29 14:54:08 Led Controller INFO [1118] Start to run WAN1_OFF
2024-04-29 14:54:08 Led Controller INFO [1118] Start to run WAN0_ON
2024-04-29 14:54:08 Led Controller INFO [1118] Start to run LAN_ON

These outage entries are always preceded by the below log entries:

2024-04-30 07:58:43 DHCPC INFO [18607] receive ack from server with ip 208.95.234.231, options(subnet=255.255.255.192;router=208.95.234.193;dns=8.8.8.8 149.112.112.112;lease=28800;serverid=147.92.88.115;cliid=01/d0:50:99:5d:e1:c4:;)
2024-04-30 07:58:43 DHCPC INFO [18607] send select request with options(cliid=01/d0:50:99:5d:e1:c4:;)
2024-04-30 07:58:43 DHCPC INFO [18607] 1/2 lease passed, enter renewing state

Sail tech support claims they see nothing on their end.  I asked them to interpret the above log entries and one of their engineers claims it is a simple handshake operation.

Based on the log statement above, do any network experts here see anything that isn’t right and might contribute to the regular disconnect issue on my end?  Can you tell me exactly what these statements are doing?

• This topic was modified 1 year ago by ibe98765.
• This topic was modified 1 year ago by ibe98765.
• This topic was modified 1 year ago by ibe98765.
• This topic was modified 1 year ago by ibe98765.

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[Fred]

Weird

Using only DNS’s from the ISP? Instead of the GoogleDNS: 8.8.8.8
or try 1.1.1.1 i.e. Cloudflare

Is there a Firmware update?
And a reset of the router gave no results too?

Brrr, That’s all I can think of….
Succes !

* _ ... _ *

• This reply was modified 1 year ago by Fred.

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IPV6 at the internet is not an issue. IPV6 internally may be an issue if you want Windows to see other Windows machines.

The log does look like standard handshaking. The DHCP lease expires and the router renews. There should be no outage if the IP stays the same, if it changes there may be a few seconds as the router refreshes the cache.

Does the IP change on renewal? Check it at https://www.whatsmyip.org/

cheers, Paul

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ibe98765 wrote:

I was getting intermittent network disconnects that would last for 30 seconds to 15 minutes or so.

When you say “network”, are you talking about your LAN (devices connected to the router, or wireless access points), or your WAN (router connected to the Internet)?

I think Sail is a fiber service, so assuming that going forward….

For WAN troubleshooting –

Is the Internet LED on the router on, or showing disconnected? (see the LED section of your router manual).

You can try this quick test for connectivity issues…

1. Turn the power off on the ONT, and unplug it.

2. Turn the power off on the router, and unplug it.

3. Wait 10 minutes.

4. Plug the ONT in, and turn it on.

5. Wait 2 or 3 minutes.

6. Plug the router in, and turn it on.

I usually recommend that when users change ISPs and use the same router, that they reset the router to factory and reconfigure. What config worked for Comcast may not work for Sail.

For LAN troubleshooting –

Is it one device, or every device on the LAN that is disconnecting?

What do the device logs show (i.e. Event Logs in Windows) around the timeframe that it occurs?

Are the devices involved using a wired, or wireless connection?

Wireless is the “Wild West” of networking, and can be impacted by channel saturation and overlap, internal and external interference, poor location of router and/or access points in the residence, and/or wireless configuration on the router.

A good tool to have is a wireless analyzer app, which can tell you who is using what channels in your area, your signal strength, and what your signal to noise ratio is.

You would use the analyzer app to check each location in the residence where wireless is being used.

Moderator Edit: to remove 14 blank lines at the bottom of the post.

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OldGuyForum wrote:

Moderator Edit: to remove 14 blank lines at the bottom of the post.

Interesting…never really noticed 14 blank lines at the bottom of the post.

I have noticed that sometimes extra lines get added when a post is edited, so it may have happened then.

I did several edits on that post.

I’ll start checking before hitting Submit.

 

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