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Aspirant
Posts: 9
Registered: ‎2012-10-31

WNDR4300 keep dropping Internet connection

My new WNDR4300 router keeps dropping internet connection at least once a day. Sometimes 3 times a day. It does have wilreless signals, yet the computer would show the yellow exclamation mark in the signal bars.
I have to power down the router and reboot it in order to restore the Internect connection. In the Dashboard, I set "Dynamically acquire address" for both IP and DNS server. I also set "Auto" for channel selection for 2.4 khz. Whatelse do I have to do make ths darn thing more stable. It is killing me that I have to reboot it after my wife scream at me.:mad:
Aspirant
Posts: 3
Registered: ‎2012-10-29

Re: WNDR4300 keep dropping Internet connection

Hi,

For internet disconnection, Try using the static DNS in the router.
( Login to your routers user interface-> advanced[TAB]-> Setup->Internet setup-> DNS [Use the following DNS] )

Primary : 4.2.2.3
secondary : 8.8.4.4

Based on your service provider, configure other internet settings.

Also reduce the MTU size to 1400.
( Login to your routers user interface-> advanced[TAB]-> Setup-> WAN setup-> MTU size )

Hope this 'll help U.... Smiley Wink
Aspirant
Posts: 9
Registered: ‎2012-10-31

Re: WNDR4300 keep dropping Internet connection

Thanks you. I did change the DNS Server address manually to numbers that were already populated. It looks like the router has not dropped Internet for 5 hours so far. I will keep my fingers crossed.
Aspirant
Posts: 9
Registered: ‎2012-10-31

Re: WNDR4300 keeps dropping Internet connection

The router still drops connection once a day. I have to press the power button to power it off and on in order to restore the connection.
The ISP and DNS are all set to static with static values. My MTU is set to 1500.
The online help says:

MTU Size

The normal MTU (Maximum Transmit Unit) value for most Ethernet networks is 1500 Bytes, 1492 Bytes for PPPoE connections, or 1436 for PPTP connections. For some ISPs you may need to reduce the MTU. But this is rarely required, and should not be done unless you are sure it is necessary for your ISP connection

So I am a bit hesitant to change it. I am thinking there maybe a conflict with my cable modem which is a UBee from TimeWarner cable. It has Wi-Fi also. And its MTU is to default. Should I reduce the MTU on the router?
Highlighted
Apprentice
Posts: 1,134
Registered: ‎2011-11-12

Re: WNDR4300 keeps dropping Internet connection

How to set your correct MTU...

http://www.dslreports.com/faq/5793
Aspirant
Posts: 9
Registered: ‎2012-10-31

Re: WNDR4300 keeps dropping Internet connection

Sabretooth, Thanks for the link. Guess what... my best MTU size is 1272. After adding 28 to it, it equals to 1300. Should I configure that number to my WNDR4300 router? How about the UBee cable modem/router from TimeWarner? currenty it is set as default. Should I set it to be1300 also? Thanks again for the help!
Apprentice
Posts: 1,134
Registered: ‎2011-11-12

Re: WNDR4300 keeps dropping Internet connection

1300... interesting. I would just set it in the router. Your Gateway device should be in bridge mode so as NOT to use the router function, only the modem in the UBee.
Aspirant
Posts: 9
Registered: ‎2012-10-31

Re: WNDR4300 keeps dropping Internet connection

After I changed the MTU size to 1300 in the router, it was running well for abut 20 hours and then it froze up again. Even with all lights that were supposed to be on were on, it was just totally dead. I could not even use the Ginie to get into it. That was the last straw. I gave up. I brought it back to Fry's and got a WNDR5400. On this new router, I only configured the static ISP and DNS servers and changed the SSID ID and password. I did not bother to chage the MTU for now. It seems be running fine so far. Go figure. I guess the WND4300 I got was just a defective...
Aspirant
Posts: 9
Registered: ‎2012-10-31

Re: WNDR4300 keep dropping Internet connection

Replacement of WNDR4300 with WNDR4500 update:
It has been over a week and the WNDR4500 is still going strong. It has never dropped the connection. I did not change MTU size in the system. And I did change the ISP and DNS addresses to static.

It is obvious that the WNDR4300 I purchased a month ago was a botched product.
Aspirant
Posts: 6
Registered: ‎2013-03-02

Re: WNDR4300 keep dropping Internet connection

WNDR4000 on most recent firmware for that device .90 has the same issue - lost internet connection due to the Routers inability to correctly work as a DNS proxy. I can actually via a wireshark trace see that the Router will not respond to DNS Requests on Port 53 being directed to it. Changed my Client Devices to use 8.8.8.8 instead of what DHCP from the router normally hands out, which is the Routers IP address at 10.10.10.1 and everything works.

I bet the 4300 has the same issue.

Next time anyone gets a Yellow Triangle - go to the command line (CMD) on a windows PC run NSLOOKUP it should connect you to your router.

From the NSLOOKUP prompt query an address say www.google.com and it will time out.

Enter SERVER 8.8.8.8 at the NSLOOKUP prompt and run the query again and you'll get a response. Essentially bypassing the router - it's connected to the internet, it's the fact that it's listener service for port 53 won't respond that your client believes it has no access to the internet.

Even tried to use Public DNS servers instead of My ISP's which the Router picks up from DHCP to Comcast and it still fails.

Not sure what gives, this being connected to a Netgear CMD31T cable modem as well. I'm not Double Nat'd that's for sure.

Tried the .88 version of the firmware for the WNDR4300 and it's the same issue.

Seen most stable is .66 but that's 5 versions behind what is current. Crazy!
Aspirant
Posts: 5
Registered: ‎2013-03-15

Re: WNDR4300 keep dropping Internet connection

Since you mentioned firmware, it occurred to me that this problem might have started for me after I updated to the latest version. I don't understand what firmware you're using. According to Netgear website, there are only three versions available (.30, .34, .42 -- unless your in Russia or China) I also thought my issues might have started around the time I installed and registered my router to Readyshare. At first I only dropped wireless, it just started two days ago dropping wired connected too. I uninstalled and unregistered with Readyshare and same problem. Thought the unit was dying until I searched for the problem here. BTW, there are two threads for this issue.
Aspirant
Posts: 10
Registered: ‎2013-12-16

Re: WNDR4300 keep dropping Internet connection

I bought a brand new NetGear WNDR4300 wireless router about 3 weeks ago. Worked perfectly until today.

I'm running Windows 7, and I noticed my Internet access icon would connect and then disconnect, continously.
My computer has a wired connection to the router, but I couldn't login to the router, because the connection was constantly dropping! Ridiculous.

BTW, I only used Wifi for a few days, but then turned it off in the router settings. Whatever this problem is, it is obviously not related to Wifi.
Retired_Member
Posts: 0

Re: WNDR4300 keep dropping Internet connection

So your choices are, keep router, return router, me I would return it, Why? Because in less than a week you won't be able to if it continues to disconnect. It may be your ISP and not the router, so again do you feel lucky and want to gamble on it. These forums are full of posters who waited to long or problem showed up too late to return. Waiting for a firmware fix is a bad idea, If you can still return it.
Aspirant
Posts: 10
Registered: ‎2013-12-16

Re: WNDR4300 keep dropping Internet connection

I should point out that the "PC side" of the router (wired Ethernet) was dropping continously, since I couldn't log into it.
I bypassed the router and plugged directly into my ISP modem, and everything worked, so the problem was definitely the router.

If I do return it, I cannot get my money back. I will have to get another one, as returns only allow exchanges, not money.
Retired_Member
Posts: 0

Re: WNDR4300 keep dropping Internet connection

Please post the name of the store so others can avoid it.
Aspirant
Posts: 4
Registered: ‎2013-09-27

Re: WNDR4300 keep dropping Internet connection

I was having this same issue, even had Netgear RMA me a new router. When that didn't help I was all but ready to head to the nearest store and purchase something else, but got to work with Tier 2 support. They sent me a Beta firmware WNDR4300-V1.0.1.50_DB_speed_problem_v2 and so far all problems have cleared. Again this fix is still under test, but my router has been up and running for over 24 hours which never was the case before. Remember, this is a fix for those experiencing the router locking up and dropping all connections (LAN/WAN/Internet) and only a power cycle would clear the trouble, with it to return only hours later.
Novice
Posts: 0
Registered: ‎2011-09-10

Re: WNDR4300 keep dropping Internet connection

Since I purchased the WNDR-4300 Router several months ago I too have experienced frequent wireless disconnects and the occasional Ethernet disconnect. It's been really frustrating especially after I went through a similar thing with my previous 3800 router which after less than two years died completely.

When Netgear sent you a replacement router, did they first send the new one out before you shipped your old one back to Netgear? I ask because my home phone goes through the Internet and I'm disabled.
I was told by Netgear via amazon reviews that there are a small number of these routers with a hardware issue.

Thanks

Steve
Aspirant
Posts: 3
Registered: ‎2014-03-11

Re: WNDR4300 keep dropping Internet connection

FYI: My WNDR3700v4 does the same thing. Drops the internet several times a day. NG replaced the first WNDR3700v4 [after 3 hours on the phone with service] and now the replacement is doing the same. Going back to my old other brand modem, slow but no drops.
Novice
Posts: 0
Registered: ‎2011-09-10

Re: WNDR4300 keep dropping Internet connection

steveincolorado wrote:
Since I purchased the WNDR-4300 Router several months ago I too have experienced frequent wireless disconnects and the occasional Ethernet disconnect. It's been really frustrating especially after I went through a similar thing with my previous 3800 router which after less than two years died completely.


Thanks

Steve


Update: On 22 February 2014 I was directed by Netgear support to update to a newer firmware version (1.0.1.42) which I downloaded and installed. Afterwards I reset the router to factory defaults. While just over two weeks ago I have not experienced any further issues with this router.
Thanks


Steve
Aspirant
Posts: 6
Registered: ‎2014-06-17

Re: WNDR4300 keep dropping Internet connection

mxnm2006,

I have this exact same problem. I have the latest firmware. Should I try downgrading firmware?...

Anyone have any ideas?
Novice
Posts: 0
Registered: ‎2011-09-10

Re: WNDR4300 keep dropping Internet connection

steveincolorado wrote:
Update: On 22 February 2014 I was directed by Netgear support to update to a newer firmware version (1.0.1.42) which I downloaded and installed. Afterwards I reset the router to factory defaults. While just over two weeks ago I have not experienced any further issues with this router.
Thanks


Steve


UPDATE: 2 weeks ago I started losing the 2.4GHz radio of the router. Now I have to power cycle the router ever 90 minutes or so. I cannot even connect to the router via web interface. Very frustrating.

Thanks
Steve
Aspirant
Posts: 1
Registered: ‎2015-01-23

Re: WNDR4300 keep dropping Internet connection

I purchased the same wireless router (WNDR4300) a year back. Everything worked great until I started updating the firmware. As a previous member mentioned, using Wireshark proves there are several issues with ports and NAT. Also, the WiFi seemed to be requesting security access very often and losing the access list at the same time. This is what causes clients to temporarily drop signal or show a "limited" connection. The router basically can't decide if the client has had access before and if the security matches. Wired connections did not seem to have this same problem.

The solution for me was to go back to the initial firmware release (1.0.1.30). It can be downloaded through Netgear Support here: http://downloadcenter.netgear.com/en/product/WNDR4300#searchResults

The router logs still continue to show some WLAN access errors along with random port scanning from the WAN but everything is stable and working. No wireless drops and having to reboot client or router to maintain connectivity.

The latest firmware from Netgear claims to have resolved these errors but it did not work for me. Just my two cents in case anyone else comes across this issue.
Apprentice
Posts: 1,134
Registered: ‎2011-11-12

Re: WNDR4300 keep dropping Internet connection

Just make sure after every firmware update you hard reset router back to factory defaults and reconfigure it back to your settings manually.
Aspirant
Posts: 1
Registered: ‎2015-08-30

Re: WNDR4300 keep dropping Internet connection

for.some.reason.when.i.go.into.

 

advanced[tab]->.setup->

 

it.wont.allow.me.access.to.internet.setup.so.i.cant.change.any.of.those.settings.my.netgear.is.the.WNDR4300.

 

excuse.the.periods.in-between.words.my.space.key.is.messed.up.

NETGEAR Moderator
Posts: 6,061
Registered: ‎2015-07-08

Re: WNDR4300 keep dropping Internet connection

Hello @llRnGZeuSll,

 

Have you tried resetting the router? After router reset, you need to reconfigure to get the Internet connection back.

 

Let us know what happens.

 

Regards,

ElaineM
Community Team
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