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[MartinZ]

Still going strong.  Now today I was able to make it lock up - the setting "True Gigabit Routing Connectivity Setting" was on. I understand when this option is enabled, the router will speed up the NAT/Routing performance by hardware acceleration mechanism.  When I turned it off the unit totally locked up.  I power cycled and it was still off.  I'm going to run it off for now, along with the force to 100Mb. I also have MyDlink enabled again. I think I'm ready to leave it alone - and see how long it will go...

[FurryNutz]

Ah, TGR should be disabled if the wan port speed isnt Gb and your isp speeds are low...
After disabling TGR, QoS will be enabled. Set up traffic shapping accordingly. I think there is a setting for 10mb up and use 100mb down.

[MartinZ]

Yea, that's why I wanted to turn it off.  I'm running 50Mb down / 30Mb up, so I don't need that WAN port at a Gb.  Also I'm going to leave QoS off - no real need for me to prioritize any traffic.  I think at this point I'll freeze any settings to see if one of these changes has fixed that 2-3 days slow down issue. If I can make a week or two, I'm going back to the latest firmware as I know that seemed to cause the issue in a day or less.

[MartinZ]

FN - I discovered something very interesting this morning.  Things still OK, however the UI was just a tad slower than it had been all week (still nothing like the past).  So I looked around and discovered the following (I can send you details and screen shots if there is a way to get it to you privately):

• On the 826 Statue/Internet Connections, it listed almost two pages of "Active" connections from a single IP
• Yet that IP address was not active on my network
• From the device I was on, I opened a browser tab to 8.8.8.8 to validate the Status/Internet list was real
• 8.8.8.8 showed up in a connecting state
• I closed the browser tab and 8.8.8.8 disappeared from Status/Internet Connections (as expected)
• The IP referenced with all the active connections (a DHCP internal) was not showing in the DHCP page
• The IP referenced with all the active connections was not showing in the Status/Devices page
• I could not ping the internal IP address that was showing as having these two pages of active connections
• One of the "phantom" active connections was to a time port, so I did an NSLookup
• Connection was to an Apple domain
• Previous night the last device I used was an Apple - but it was shut down/off
• I powered it up and sure enough it was the IP address listed with all of the active connections (lease had not expired)
• All the phantom connections still showed active on power-up, along with new ones from the device
• I shutdown the device and the two pages shrunk to less than one page
• 15 minutes later there were still 7 active connections showing from the device
• The device was off, and the IP was not active on the network

After the 15 minutes, the UI was back to the very quick response times

Is there a connection state issue and it not timing out connections?  Again, I do have screen shots showing the phantom active sessions, the no DHCP IP address, an NMAP discovery showing other IP's but not the powered off device, the inability to ping the phantom IP, what it looked like after the device was powered on and what it looked like after the device was powered off again.

[FurryNutz]

Is this with the latest version loaded or v1.02?

I'm looking at my list there is a semi long list however i have a few devices online so I presume this is correct behavior for me. 8.8.8.8 is a Google DNS address. Are you using Google DNS? Is DNS relay enabled or disabled with manual DNS>?

Yes please email me this information...

[MartinZ]

I'll put it all together and send it to you.  I just got home and that one IP (laptop which is off) still is showing 5 connections.  The google DNS was the only IP I could think of at the time.  I know it is google DNS, I just put it in my browser to see if that connection would show up under Internet Sessions. I know it would time out via port 80 of the browser, instead of a port 53 connection, but was pretty sure it would show up while it tried to connect - and indeed it did.  That was only done for me to test the real time nature of Internet Sessions, from the device I was on.  So the connection showed up and when I closed that browser tab the connect went away.  So that told me there is no reason all those connections should be showing up from a laptop that was off for 7 hours.

[FurryNutz]

Ok, I recommend doing a full factory reset, load up v1.04, factory reset once more then set up from scratch and use default ISP DNS and see what happens. Turn OFF all other devices cept for one wired LAN PC.

Please follow the FW update process for doing this. We need to establish a clean install of the FW.

[MartinZ]

Well remember, you wanted me to stay at 1.02 because that is what came with the device and it kept getting slow or locking up after 3-4 days.  But now that I made those other changes with forcing the Wan connection to 100Mb and turning off the TGR - it seems to be working OK.  Only a slight slow down in the UI this morning and when I got all those connections cleared the UI is back to very fast.  Before those two changes, the unit would have required a power cycle by now.  So I'll go back to 1.04 with those Wan 100Mb and TGR off settings and see how 1.04 works now.

[FurryNutz]

Keep us posted...

[MartinZ]

Well it didn't make a day running v1.04
Sometime mid morning - using only the wire attached PC, the Internet got slow.  The 826L UI was slow, speed test as follows:




I power cycle the unit and back to normal




SO I guess at this point I'm going back to v1.02

The only thing I used last night and this morning is the wire directly attached PC.

When I upgraded, I updated the firmware, reset the unit to factory defaults, rebooted, reloaded the configuration.

I really do not want to manually type in all my settings again unless we are 99% sure that will do something.  In addition, when this unit was replaced and I got a new one, I did a firmware update to v1.04, factory reset, and then had to manually enter all my info (so it was done that way initially).  And the unit did this slow down thing - so I'm now thinking issues with v1.04.   

I'm going back to v1.02 and seeing how long that will last.  Last time I had made a week with no real problems.  It does seem like this happens when I'm on v1.04 (but did happen under v1.02 - it just happens a lot faster with v1.04).

[FurryNutz]

This is crazy....

I'm going to pass this along to D-Link and see if they can review this and offer up some info. I'm wondering whats going on between v1.02 and v1.04 with using TGR disabled and setting WAN port speed to 100.

Im wondering if there is an ISP modem issue here.

So back to the modem for a minute, Is the modem in router mode or bridge? Does this modem have a DMZ?
Any chance you can get an updated modem with GB LAN port speed from your ISP by chance? I notice this is an Actiontec modem. I'll see if they have any Gb support modems out there...

[FurryNutz]

Let see if D-Link says after review of this.

[FurryNutz]

Still waiting on info...I did put mine back online last night. I didn't get a chance to run any speeds tests yet. Been doing ok so far. I bridged by 868L to the 5Ghz radio. I sure noticed the temps were high though. the highest I saw was 114F on the main chip and 110F on the 2ndary chip that doesn't have heat sink by default that I applied one too. I presume the 868L is working the radio well since I have 4 devices connected to the 868L in the living room.

I'll test the speed today after work. Keep us posted on how yours is doing.

[FurryNutz]

SO here is my results for speed tests on 50/3 ISP:
Last Result:
Download Speed: 52299 kbps (6537.4 KB/sec transfer rate)
Upload Speed: 3157 kbps (394.6 KB/sec transfer rate)
‎1‎/‎7‎/‎2014‎ ‎4‎:‎28‎:‎11‎ ‎PM

This is wired PC to the router with a switch in between.

[MartinZ]

NetGear N600 has been online for 3 days and not a single issue.

System Up Time 2 days 22:03:34
Port    Status    TxPkts    RxPkts    Collisions    Tx B/s    Rx B/s    Up Time
WAN    100M/Full    2148107    3095819    0    4605    15162    2 days 21:44:03
LAN1    100M/Full    24988466    10944167    0    5242    7314    2 days 21:44:03
LAN2    100M/Full    2 days 21:44:03
LAN3    100M/Full    01:03:35
LAN4    100M/Full    2 days 21:44:03
WLAN b/g/n    145M    10310415    23730006    0    11086    18514    2 days 04:09:09
WLAN a/n    300M    606175    273329    0    3704    516    2 days 04:09:09

Speed Test


So all of my previous routers, and the new N600 working fine in the same configuration, same location.  Add to that the list I posted of people on Amazon in the feedback forums complaining about the 826L needing to be reset every few days and some every day (like I have to running FW 1.04) - and I think there is a compelling amount of information to say something is up with the 826L in certain configurations.

Now I use a lot of the functionality of routers (reserved IP's, Port Forwarding...etc), it could be anything beyond the basic configuration causes issues in the 826L.  But that doesn't seem to matter on any of the other routers I've had in this same configuration.  Maybe a bad batch of 826's.... who knows.

If there is anything I can do to help the engineers at DLink, let me know and I'll put the 826 back online.  If I run the 826 with v1.04 it will usually fail in a day - so it might provide useful information if they care to dig deeper.  I'm staying on the N600 to see if anything seems unusually with this contemporary equal.  Well actually at this point, I'm going to have to stay on the N600 because it seems to be working (like my last three routers).