Any Network Engineers can shed light on this weird issue?

have you checked the log on the router's support page?

maybe a time sync or ip lease issue.

from mine:

2024-01-10 13:54:01 syslog: Send out NTP request to ntp1.isp.sky.com
2024-01-10 13:54:01 syslog: Received NTP Sync Reply from ntp1.isp.sky.com
2024-01-10 13:54:01 syslog: System time is up to date
2024-01-10 14:23:42 syslog: Lease renewed 3600 rebind time:3060 ip xx:xx:xx:xx
2024-01-10 14:51:18 syslog: Lease renewed 3600 rebind time:3060 ip xx:xx:xx:xx
2024-01-10 15:25:11 syslog: Lease renewed 3600 rebind time:3060 ip xx:xx:xx:xx
2024-01-10 15:54:17 syslog: Lease renewed 3600 rebind time:3060 ip xx:xx:xx:xx

Here's the router log file if it makes sense to anyone? Essentially exactly the same each time and extremely regular at just over 42 minute repeat intervals???

The log is rewritten every time so there's no more history.

With my limited knowledge I'm pretty sure this is an external problem unless this router has some weird internal issue, Now checked the line yesterday and said it appeared fine (but it was up at that point...)

15.43 outage

1970-01-01 00:00:09 syslog: BusyBox v1.17.2
1970-01-01 00:00:09 syslog: plc0 (Int switch port: 4) (Logical Port: 4) Link UP 100 mbps full duplex
1970-01-01 00:00:09 syslog: [ 7.317000] eth1 (Int switch port: 6) (Logical Port: 6) Link UP 1000 mbps full duplex
1970-01-01 00:00:09 syslog: [ 9.356000] eth1 (Int switch port: 6) (Logical Port: 6) Link DOWN.
1970-01-01 00:00:14 syslog: [ 14.430000] eth1 (Int switch port: 6) (Logical Port: 6) Link UP 1000 mbps full duplex
1970-01-01 00:00:35 syslog: [ 35.003000] Line 0: xDSL G.994 training
1970-01-01 00:00:44 syslog: [ 44.136000] Line 0: ADSL link down
1970-01-01 00:00:47 syslog: [ 47.397000] eth1 (Int switch port: 6) (Logical Port: 6) Link DOWN.
1970-01-01 00:00:51 syslog: [ 51.432000] eth1 (Int switch port: 6) (Logical Port: 6) Link UP 1000 mbps full duplex
1970-01-01 00:00:55 syslog: sky dhcpc client (v0.0.1) started
1970-01-01 00:00:56 syslog: [ 56.147000] Line 0: xDSL G.994 training
1970-01-01 00:01:11 syslog: [ 71.150000] Line 0: VDSL G.993 started
1970-01-01 00:01:22 syslog: [ 82.864000] Line 0: VDSL2 link up, Bearer 0, us=7928, ds=61407
1970-01-01 00:01:22 syslog: [ 82.870000] Line 0: VDSL2 link up, Bearer 1, us=0, ds=0
1970-01-01 00:01:30 syslog: sky dhcpc client (v0.0.1) started
1970-01-01 00:02:00 syslog: ptm0.1 - WAN link UP.
1970-01-01 00:02:00 syslog: Received valid DHCP lease from server. Connection UP.
1970-01-01 00:02:00 syslog: Connection Up. SNO/MAC/IP/SWVER/IPv6: XXXX
1970-01-01 00:02:00 syslog: Send out NTP request to ntp1.isp.sky.com
1970-01-01 00:02:00 syslog: Time has been set from ntp1.isp.sky.com
2024-01-10 15:46:50 syslog: Received NTP Sync Reply from ntp1.isp.sky.com
2024-01-10 15:47:04 syslog: TR69: Connect to Production ACS
2024-01-10 15:47:04 syslog: TR69: Connection to ACS Complete
2024-01-10 15:47:21 syslog: Connection Up. SNO/MAC/IP/SWVER/IPv6: XXXX (edited)

It sounds more like an ISP issue and probably something outside your control. It seems the only recourse is to file a complaint.

I dont use Now or Sky for broadband but from what I understand you can use the Sky SR203 router as a direct replacement for the Now Hub 2 (if thats what youve got).....apparently the Hub 2 gets hot. The SR203 is about £20-25 or cheaper on ebay or facebook marketplace.

Perhaps someone else can confirm this is an improvement worth making?

For that money personally I'd be thinking of 1 of 2 things...

1/ Replace the Hub 2 with the SR203 .....youd just have to turn the wifi off on the SR203 if you already have your eero setup.

2/ Buy a Draytek 2860 or 2862 router on ebay (maybe £20 - £30 if you shop around) ....you dont necessarily need a wireless router as youre going to turn it off anyway for eero.

So models 2860/2860n/2860ac or 2862/2862n/2862ac etc

These models are fast enough for FTTC (fibre to the cabinet/copper to your premises) but not necessarily FTTP (fibre into your premises. From your log it looks like youve got FTTC.

Setup guide for Sky here

Im suggesting the Draytek models as these models are cheap 2nd hand and reliable....someone else might have other suggestions. (edited)

So it's specifically the internet connection and the rest of your home network is fine? Screen sharing, playing local music files and so on still work?

The regularity does smell like more like a bug than a fault

It could be something incrementing every 10 seconds, hitting 256 and causing an overflow error. That sort of timescale is common for keep alive pings for internet based protocols.

Unfortunately most modems and routers are not great at providing troubleshooting information and what they do provide is often only accessible through arcane command line interfaces rather than the main web interface.

I'd ask around friends and family to see if you could borrow a spare router as that'll mostly rule it out being a bug on your end.

I am not network engineer and don't have Now broadband, I assume you already try the old trick of uplugging it, wait for few minute and start again?

How about log in to the router and check the setting?

Do all your connected devices drop their connection?

Do any lights change on the router?

Have you tried a factory reset of the router?

Is the broadband actually dropping? broadband light goes red.

Are you using a wired connection when this happens.

Try leaving the router switched off for an hour to get a different ip address and gateway on the now broadband network.

Try a different router.

Failing that sounds like a line issue.

community.nowtv.com/t5/…111

community.nowtv.com/t5/…rue (edited)

Based on the log, it seems to me more a router hardware problem than a broadband problem.
Unless the sky router is crazy enough to reset the time when broadband goes down.
Are you able to access the router when you notice the issue?