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Nighthawk x4s r7800 connection issues

BintrePid81
Aspirant

Nighthawk x4s r7800 connection issues

Bought this router back in July 2017, worked flawlessly for a month. I then moved to another part of the country, since then nothing but problems. I have an XBOX and Apple TV plugged in via Ethernet. After they are powered down for the night they lose connection with the router when powered on the next day, getting 169.x.x.x addresses. Reseating Ethernet or resetting the devices changes nothing. Rebooting the router does fix the issue until the following day then another reboot of the router is required. During all of this my wireless devices remain connected and work fine. Of note, I have noticed that the router LED lights for my 2 connected devices tend to fluctuate between Amber and white, mainly the XBOX which I know is Gigabit. The Apple TV used to be white when I had my flawless month, now it’s always amber. This has been going on consistently since arriving in my new home. 

I don’t have any special settings setup other than access control set to block new devices from connecting. I did try disabling that for a few days, still needed to restart the router each day. Tried leaving one device at a time plugged in, each for a few days, still needed to reboot the router. I am on the latest firmware 1.0.2.36 and I have tried downgrading that as far back as .28, same results. 

Now that I’m out of ideas and past the 90 day Support window with Netgear I ask if any of you can assist me with ideas, things to try, etc. If further information is required to help troubleshoot I have no problem providing that. I would really like to try and fix this and not have to spend another $200 when I literally just did that. Appreciate any help you can provide!

Model: R7800|Nighthawk X4S AC2600 WiFi Router
Message 1 of 13

Re: Nighthawk x4s r7800 connection issues


@BintrePid81 wrote:
I am on the latest firmware 1.0.2.36 and I have tried downgrading that as far back as .28, same results. 

 


Did you reset the router to factory settings after the firmware flashes?

New firmware sometimes introduces changes that are not compatible with the old configuration.

So a factory reset is the first thing to try if you have problems with new firmware.

First note down the settings – screen grabs can help here.

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 2 of 13
BintrePid81
Aspirant

Re: Nighthawk x4s r7800 connection issues

Sorry, I did neglect to mention that I had done factory resets after some of the firmware upgrade/downgrade, not all once I saw it wasn’t having any effect.

Model: R7800|Nighthawk X4S AC2600 WiFi Router
Message 3 of 13

Re: Nighthawk x4s r7800 connection issues

OK. It is just something that you have to rule out.

 

As I understand it, your issue is with slow LAN speeds. So let's get one thing out of the way. In your first message you say:

 

Of note, I have noticed that the router LED lights for my 2 connected devices tend to fluctuate between Amber and white, mainly the XBOX which I know is Gigabit. The Apple TV used to be white when I had my flawless month, now it’s always amber.

Those colours indicate the speed of the LAN connection. An amber light means 100 Mbps, white light means 1000 Mbps. I have yet to encounter a TV that does 1000 Mbps. It isn't needed. So unless Apple is well ahead of the pack, the light there will always be amber.

 

You also say:

 

 

After they are powered down for the night they lose connection with the router when powered on the next day, getting 169.x.x.x addresses.

What does that mean? Something like 192.168.0.8 will be the local address on your network.

 

One thing that you should investigate for LAN links is the quality of the cable. This seems to be an issue as Ethernet gets faster. It puzzles me, but people report that they have fixed LAN speeds simply by changing the cable.

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 4 of 13
BintrePid81
Aspirant

Re: Nighthawk x4s r7800 connection issues

For ther LAN speed issue, its not really a problem, more an observation that I thought might be related to the disconnect isse which I'll elaborate on in a minute. When the connection is working (meaning the device is getting a valid IP address then it works fine and don't notice issues with buffering or disconnects.

My real issue is when my devices get a 169.x.x.x address after they've been in "Sleep" mode overnight. For whatever reason my devices that are plugged in via Ethernet will not receive an IP address from the router unless I reboot the router, then everything is fine. 

For example: I typically work 8-5 M-F, in the evenings I'll start my Apple TV to stream a show I watch. It'll inform me that it is not connected to a network. I'll look at my network settings on the Apple TV and it'll say the IP address is 169.x.x.x. Rebooting the Apple TV does nothing but if I reboot the router then it gets a 192.168.x.x address and everything works for the rest of the evening. I'll then put it to sleep when I'm done ehere it'll stay until the next evening and this process repeats. During all of this the wireless devices all work fine. My phone which I take with me when I got to work disconnects from the network when I leave and automatically reconnects when I come home so wireless is not an issue. 

Model: R7800|Nighthawk X4S AC2600 WiFi Router
Message 5 of 13

Re: Nighthawk x4s r7800 connection issues

So the 169.x.x.x address is what you see. I interpreted this as being a "mask" that meant that it got an address in that range.

 

I assume that the devices are connected directly to the router, rather than through an intermediate switch.

 

Have you thought of allocating these devices a fixed, or static, IP address?

 

I've not seen that behaviour with my wired TV like devices, but I have seen enough messages here to hint that the problem may well lie at that end of the chain. But with two devices that seems less likely.

 

When these problems arise, have you tried simply unplugging the TV for a second or two and then reconnecting it?

 

 

 

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 6 of 13
antinode
Guru

Re: Nighthawk x4s r7800 connection issues

> I have an XBOX and Apple TV plugged in via Ethernet. After they are
> powered down for the night they lose connection with the router when
> powered on the next day, getting 169.x.x.x addresses. Reseating Ethernet
> or resetting the devices changes nothing. Rebooting the router does fix
> the issue [...]

   To me, that sounds as if the router's DHCP server has died.  The
169.254.x.y address is a self-assigned address, which a device will use
if it can't get a real one (from any DHCP server).  A dying DHCP server
process would typically be a router firmware problem.

> During all of this my wireless devices remain connected and work fine.

   The DHCP server is needed only when first connecting.  But, ...

> My phone which I take with me when I got to work disconnects from the
> network when I leave and automatically reconnects when I come home so
> wireless is not an issue.

   Which would suggest that the DHCP server is not the problem.

> Of note, I have noticed that the router LED lights for my 2 connected
> devices tend to fluctuate between Amber and white, mainly the XBOX which
> I know is Gigabit. The Apple TV used to be white when I had my flawless
> month, now it's always amber.

   I know nothing of Xbox or Apple TV, but an Ethernet interface on many
systems will run at 100MHz in standby mode (system powered "off"), or
when first powered on, and then switch to 1000MHz when the system is
powered up, and the usual link-speed negotiation is done.  If the speed
negotiation fails, then that suggests that there's a more fundamental
communication problem.  (Of course, if the comm link is totally dead,
then you won't hear from the DHCP server, either.)

   One possible link-speed diagnostic would be to try connecting a
problem device to some other gizmo, like, say, a gigabit Ethernet
switch.  If that device and the other gizmo negotiate and indicate
1000MHz speed, but reconnecting the problem device to the router still
indicates a lower speed, then the router would seem to be at fault.

   If the router works properly immediately after a restart, but fails
later, I'd tend to blame the firmware, and start trying different
versions.  In principle, overheated hardware is possible, but if a
restart restores normal operation, then that seems unlikely.

> Have you thought of allocating these devices a fixed, or static, IP
> address?

   That might be an interesting experiment.  You'd want to configure a
static IP address on the problem device.  (Reserving an address for it
on the router would still involve the router's DHCP server.)  If the
router stops talking to its LAN ports (for whatever reason), then you
should still see a low link speed (if you disconnect+reconnect the
cable), and a device which can't reach the Internet, but not the
self-assigned IP address.  But a static address would remove any
dependence on the router's DHCP server.

Message 7 of 13
BintrePid81
Aspirant

Re: Nighthawk x4s r7800 connection issues

Yes these devices are plugging into the router directly, I am not using a switch. 

I have tried unplugging the cable and plugging back in when the problem occurs and the problem remains.

I have not tried assigning static IPs to my devices but it sounds like a good idea to try. I'll work on that this weekend and see if that fixes things for me.

Model: R7800|Nighthawk X4S AC2600 WiFi Router
Message 8 of 13
BintrePid81
Aspirant

Re: Nighthawk x4s r7800 connection issues

Through your indepth anaysis you can see why I've had trouble figuring this out. One possible culprit is negated by something else.

I'm going to try assigning static IP addresses to these and see if that fixes the issue. Definitely appreciate your very descriptive break-down! I'll report back once I've implemented this and tried it out for a days. 

Model: R7800|Nighthawk X4S AC2600 WiFi Router
Message 9 of 13
antinode
Guru

Re: Nighthawk x4s r7800 connection issues

> I'm going to try assigning static IP addresses to these and see if
> that fixes the issue.

   I wouldn't bet on it, but it'll be more evidence of something, in any
case.

   To me, it sounds more as if the LAN ports are just being disabled
(for no good reason?), and that results in bad link-speed negotiation
and complete lack of communication (which implies DHCP failure, hence
the 169.254.x.y addresses).  Setting a static IP address on a problem
device should avoid the self-assigned IP address, but it won't solve a
dead-LAN-port problem.

   If your wireless devices have no trouble getting a proper IP address,
then the DHCP server must be running.  But, if you're desperate for
amusement, there are ways to gain command-line (shell) access to many
Netgear routers, and a "ps" command is pretty definitive as to whether a
DHCP server is running.  On my D7000, for example:

# ps | grep -i dhcp
 1111 root       704 S    /var/udhcpd_1 /etc/udhcpd.conf1

(I use this: http://antinode.info/nte )

   I know nothing, but an "ifconfig -a" report might say something about
the LAN ports (if you can figure out what they're called).  Perhaps some
good-v.-bad comparisons between those reports would reveal something. 
(I suppose that you might need to Telnet in from a wireless machine, if
the LAN ports really are dead.  Everything's complicated.)

   If you're using any exotic router features, like, say, USB-attached
storage, then I'd disable those, too.

Message 10 of 13

Re: Nighthawk x4s r7800 connection issues


@antinode wrote:

   I know nothing, but an "ifconfig -a" report

 


That's probably meant to be ipconfig

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 11 of 13
antinode
Guru

Re: Nighthawk x4s r7800 connection issues

> That's probably meant to be ipconfig

   Not really.  The OS on the router is GNU/Linux, not Windows.

# type ifconfig
ifconfig is a tracked alias for /sbin/ifconfig

# type ipconfig
ipconfig: not found

   Perhaps a factory reset would fix that, too.

Message 12 of 13
antinode
Guru

Re: Nighthawk x4s r7800 connection issues

> I assume that the devices are connected directly to the router, rather
> than through an intermediate switch.

> Yes these devices are plugging into the router directly, I am not
> using a switch.

   If nothing else helps, then that might be the next experiment to run.
Another fellow has posted a complaint about odd/volatile LAN port
speeds on an R7000 (with "latest" firmware -- always a useless
description):

      https://community.netgear.com/t5/x/x/m-p/1394308

   Presumably, a port on a (cheap, unmanaged, 5- or 8-port) gigabit
Ethernet switch would present a stable gigabit partner for a LAN port on
the R7000.  So, no matter how lame the R7000 firmware might be, it ought
to get that one LAN port speed right (and keep it that way?).  And the
Ethernet switch should have less/no difficulty negotiating a reasonable
speed with anything which might be connected to it.  (That is one of its
few primary jobs, after all.)

   Currently, I have no R7000 on which to experiment.  I know of two
installations (unknown firmware versions, probably not the "latest"),
where the only things connected to the R7000 LAN ports are (trees of)
Ethernet switches.  I don't recall seeing any such link-speed difficulty
in either case.  I may get a chance in the next few days to run a test
at one of those sites, with a computer connected directly to an R7000
LAN port.  No bets, but I'll report back if I learn anything.

Message 13 of 13
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