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Very brief network outages

My router is posting the below pair of entries in the WAN DHCP Log on the hour's 13th and 17th minutes, every hour 24x7. I receive a very brief network outage during the first entry (on the 13th minute) for about 5 seconds.

Time | Event type | Log Level | Details

2022 Apr 25 22:17:38

dhclient

info

[WDHCP] RCV: Reply message on eth4 from XXXX::XXXX:XXXX:XXXX:XXXX.

2022 Apr 25 22:13:35

dhcpc.sh

info

[WAN.6][WDHCP] renew IP: XX.XX.XX.XX

Any thoughts?

Also, where does the "PON Card" you indicated sit? Is that within the ONT, or?

Thank you!!

Comments

Cang_Household

Unless your WAN DHCP log shows IP rebind warnings and arp failures, it is not likely an upstream issue.

PON card is sitting in the Central Office/Neighborhood distribution hub. More specifically, in the Optical Line Terminal, the other end of the fiber reaching your ONT.

It could be a clock synchronization issue, that the Gateway Router (GWR) recycles your WAN IP before your router times out to renew the IP address.

triumph100

This post was originally in response to this solved one:

"HELP - Daily WAN disconnects"

https://forums.verizon.com/t5/fios-internet/help-daily-wan-disconnects/m-p/912409#M85885

I believe it may be very similar!

Cang_Household

That's not similar.

Like I said before, unless your WAN DHCP log shows IP rebind warning or arp failures, it is not likely a upstream issue.

triumph100

Thanks for the replies. I checked the WAN DHCP Log and no indication of IP rebind warning or arp failures.

Now that I've been investigating this a little more in depth, the drop outs are much more frequent and random throughout the day. The internet drops out for only about 5 seconds each time. I've checked that our Verizon TV and Land-line Phone (there's a dial tone) are both running seemingly fine during a drop out.

I'm not seeing any other useful information in any of the logs on the Fios Router.

Not sure what else to check and of course open to any ideas.

triumph100

Here is a sample of the outage frequency and duration. I ran this log overnight.

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