New to this forum. Major problem

[degrub]

"static" means they are manually configured in the device.
"reserved" in this case, means they are manually determined by MAC address in the reservations list.

If you set the first (static), then you want the reservation list to match or it has to be outside the working range of DHCP assuming the DHCP server does not check for conflicts (vendor dependent ? )

If you don't set the first (static), then the reservations list will cause DHCP to assign that address to the device when requested if the MAC address matches in the request.

If neither is set, then the DHCP server will assign the first available address in it's working range. Someone mentioned that it is random in ASUS. Maybe so. i don't know.

 

[Ronnie Bailey]

"static" means they are manually configured in the device.
"reserved" in this case, means they are manually determined by MAC address in the reservations list.

If you set the first (static), then you want the reservation list to match or it has to be outside the working range of DHCP assuming the DHCP server does not check for conflicts (vendor dependent ? )

If you don't set the first (static), then the reservations list will cause DHCP to assign that address to the device when requested if the MAC address matches in the request.

If neither is set, then the DHCP server will assign the first available address in it's working range. Someone mentioned that it is random in ASUS. Maybe so. i don't know.

Thanks for the information.

 

[sfx2000]

@Ronnie Bailey - I should mention the reason why I ask you to reduce the lease time down to 7200 from 86400

Previously you had reported that things were dropping in the middle of the night, by dropping the lease period down to 2 hours, you'll have a better chance of catching it in the syslog if it's a DHCP problem.

 

[Ronnie Bailey]

Since I took my Zidoo X9S )running OpenWRT in the background) offline, my cam has not gone offline (about a day and a half). But today around 2 pm., my HDHomeRun tuner stopped showing up as a device, BUT it still showed up as connected to my network. I have been running a ping app since yesterday, and nothing has dropped off my network.

 

[sfx2000]

Since I took my Zidoo X9S )running OpenWRT in the background) offline, my cam has not gone offline (about a day and a half).

Be certain that there is only one DHCP server on a subnet...

 

[Ronnie Bailey]

Be certain that there is only one DHCP server on a subnet...

Right now, I have 5 security cams, 2 NAS's, 3 Windows 10 PC's, one Android box, 2 HDHomeRun networked tuners and one cell phone, connected to my network right now.

Can any of the above create a DHCP server??

 

[sfx2000]

Right now, I have 5 security cams, 2 NAS's, 3 Windows 10 PC's, one Android box, 2 HDHomeRun networked tuners and one cell phone, connected to my network right now.

Can any of the above create a DHCP server??

I'm worried about the Zidoo box running OpenWRT - traditionally it's intended as a router/gateway, and typically runs a DHCP server...

 

[Ronnie Bailey]

I'm worried about the Zidoo box running OpenWRT - traditionally it's intended as a router/gateway, and typically runs a DHCP server...

I will keep it offline and see what happens.

Today, though, my Live TV apps could not "see" my networked tuner, but it still showed that it was still connected to my network. SiliconDust said from the diagnostics, that it was defective. Could that networked tuner cause other devices go off the network?? Doesn't make sense to me.

M system has been working flawlessly, until about 2 weeks ago.

 

[degrub]

If they will replace it under warranty, i would. Not sure what the diagnostics were indicating, but sure, if the network chip and software were doing crazy things. I’ve seen failing network cards cause so many retransmissions that the network was saturated and devices could not communicate and dropped offline. Sometimes it was the vampire tap not making good contact with the core conductor that took the ethernet down.

No way to tell with the hdhr except see if the issues go away with it’s network cable unplugged. That is why i had suggested looking at the port lights to see if some were going crazy blinking. Of course, it might not occur except at odd times or when another device requested services from it - like recording a stream or updating the program schedule from the internet.

 

[degrub]

Can you see in the zidoo box if dhcp services are disabled ?

Since everything was working a couple weeks ago, it may have been an update that changed settings or a hardware failure like the hdhr.

It’s odd that your initial failure times were the middle of the night. Just about the time program schedule updates might be requested by dvr programs to avoid conflicting with watching tv. The Myth box i had was set to 2am for that reason.

 

[Ronnie Bailey]

Update, Thursday, Sept 27. I removed my HDHomeRun networked tuner from my system before 9:30 pm, and boxed it up. This morning, I got up and my Dahua IP cam was offline. It went offline at 00:38 this morning.

 

[Ronnie Bailey]

Can you see in the zidoo box if dhcp services are disabled ?

Since everything was working a couple weeks ago, it may have been an update that changed settings or a hardware failure like the hdhr.

It’s odd that your initial failure times were the middle of the night. Just about the time program schedule updates might be requested by dvr programs to avoid conflicting with watching tv. The Myth box i had was set to 2am for that reason.

I removed power from the Zidoo 3 or days ago........ The networked tuner and IP camera are still dropping off line. The other devices that kept dropping off line, I removed several days ago.

Why doesn't my 4 other IP cams go offline, or my NAS's. If my NAS's go offline, I get an email telling my they went offline and when they came back online, but I haven't gotten any emails about that. And no indication that my NAS's have gone offline and went back online.

I turn my desktop computer off each night around 9 pm or earlier. My other two microPC's, I keep running 24/7. One of them is my Emby and Plex server, could that cause a problem?

 

[degrub]

Sure, it could be. i expect the Plex goes and gets schedule updates sometime, but unless you have logs or other diagnostics, i think you are going to have to be systematic and take off devices until the drop offs stop. If you are left with one device and it drops off, then connect it to the router directly, then the ISP device if it can support it.

The only other thing i can suggest is using a packet sniffer to see if there is any indication. Otherwise, if it isn't hardware failure, i am running out of ideas.

 

[Ronnie Bailey]

My cam just went off line again...... grrrrrrrrrr. Went offline at 3:15 pm.

 

[Ronnie Bailey]

Sure, it could be. i expect the Plex goes and gets schedule updates sometime, but unless you have logs or other diagnostics, i think you are going to have to be systematic and take off devices until the drop offs stop. If you are left with one device and it drops off, then connect it to the router directly, then the ISP device if it can support it.

The only other thing i can suggest is using a packet sniffer to see if there is any indication. Otherwise, if it isn't hardware failure, i am running out of ideas.

If multiple devices keeps going offline, how can it be a hardware failure?? And to top it off, it only started a couple of weeks or so ago.........

Wont be long, the only thing I will have in my system is the IP cam.

 

[degrub]

common mode is power and ground.

 

[Ronnie Bailey]

common mode is power and ground.

Yes, but I checked the power distribution panel today. None of the connectors were discolored, sigh of loose connection. The voltage was 124 volts from each leg to ground, and between legs was 248 volts.

I am a long retired industrial electrician. I know what havoc a loose or corroded ground lead can cause.

 

[degrub]

i was thinking something that elevated ground potential - perhaps lightning nearby in the last 6 months or so.

 

[Ronnie Bailey]

Here is what my system looks like.

 

[Ronnie Bailey]

i was thinking something that elevated ground potential - perhaps lightning nearby in the last 6 months or so.

Hmmmm, can you be more specific......