my ISP thinks its NIC issue

[jime1]

Hey mate,

I've been having internet ping & page loading issues (unstable connection)since a few months now..
so I've been calling my ISP guy for this issues, and finally today he arrived to check what was wrong

he checked the ping from my PC to modem, it is 6ms ! But according to him it should be <1ms !!
and because of this, he came to the conclusion that my PC's NIC has issue !

I didn't believe him, So he took his laptop and connected the cable from the modem to its nic port
and he pinged and it was <1ms !

so he told me to reinstall network drivers, and I did so, but still I have 6ms local ping and the main issue still present
so he tells me to buy a new pci nic !
but I dont believe this guy...

Do you think that my PC's NIC is busted ? is there any way to check whether my NIC is working properly ?


PS : my mobo is DG41RQ and it has onboard Gigabit NIC(Realtek)

tysmia

 

[dave_the_nerd]

If it's your NIC, you'd have the same dropped ping and loading issues from your PC to your modem as you would from your PC to other web pages. So I'd expect you to be dropping pings to your modem as well.

6ms isn't crazy-slow for a lan, depending on the network fabric (wifi, bridged networks, etc). A direct cable connection should be faster though.

I'd ping your modem a few hundred times and see if you drop any packets. If you do, then he's probably right.

Also try a new cable. There's some magic in those.

 

[Gryz]

6ms over a 1Gbps ethernet cable that is <100 meters long is crazy high.

Could be your NIC is broken. But unlikely. Normally when something in a computer (or network device) is broken, it is really broken, and doesn't work at all. Your ping works. So I would guess your NIC works. Must be something else.

NIC drivers have settings. See if you can reset those. E.g. by uninstalling the driver, removing registry entries, whatever. And then reinstalling a new driver. Just make sure it sets all settings all new, and does not take existing settings from the registry. (Careful, messing up your registry is bad).

Check to see what your driver has set the network speed to. 10Mbps, 100Mbps or 1Gbps. If there is a physical problem, sometimes drivers set the speed lower than they should. (You can see the actual speed in a control panel).

Could be the cable. Could be connectors. Did the ISP-guy tried your cable, or did he use his own cable ? Try another cable. Try a short cable, close to the router.

 

[mxnerd]

It could be other issues have been mentioned.

You can also download Realtek Diagnostics program and run it see if it reports any errors about the adapter.

You also should tracert the most visited website see if there is any problem in between.

 

[kevnich2]

If his laptop to the modem gives correct results and speeds, it's NOT the ISP service, so that's usually where they're responsibility stops.

 

[jime1]

bros, I checked it with the Realtek Ethernet Diagnostic Utility, it showed 0 errors !

and then I downloaded and installed the latest drivers, still I get nothing less than 6ms ping !!:\

I also checked and found that it is on full duplex

I also tried other cross cables CAT6 and CAT5e, still no difference

what else can i do now bros ??
http://******/RPlto

 

[KillerBee]

Install a brand new OS on another partition and see if it is better ...or download some linux live distro like Ubuntu to boot off USB

 

[dave_the_nerd]

Have you been having the ping and dropped connection issues since the ISP guy came out? I don't know what customer service is like in India, but in the US it's not uncommon for them to come out, fix the problem (that was their fault) then blame it on you so they can charge for a service call anyway.

Also, I hate to break it to you but nobody says "bro" except ironically.

 

[jime1]

Install a brand new OS on another partition and see if it is better ...or download some linux live distro like Ubuntu to boot off USB

I have puppy linux, I'll try it out

 

[jime1]

Have you been having the ping and dropped connection issues since the ISP guy came out? I don't know what customer service is like in India, but in the US it's not uncommon for them to come out, fix the problem (that was their fault) then blame it on you so they can charge for a service call anyway.

Also, I hate to break it to you but nobody says "bro" except ironically.

alright, mate,only if you are okay with it^_^

 

[jime1]

sh!t !!!
the local ping just increased to 15ms constant !!

 

[azazel1024]

6ms over a 1Gbps ethernet cable that is <100 meters long is crazy high.

Could be your NIC is broken. But unlikely. Normally when something in a computer (or network device) is broken, it is really broken, and doesn't work at all. Your ping works. So I would guess your NIC works. Must be something else.

NIC drivers have settings. See if you can reset those. E.g. by uninstalling the driver, removing registry entries, whatever. And then reinstalling a new driver. Just make sure it sets all settings all new, and does not take existing settings from the registry. (Careful, messing up your registry is bad).

Check to see what your driver has set the network speed to. 10Mbps, 100Mbps or 1Gbps. If there is a physical problem, sometimes drivers set the speed lower than they should. (You can see the actual speed in a control panel).

Could be the cable. Could be connectors. Did the ISP-guy tried your cable, or did he use his own cable ? Try another cable. Try a short cable, close to the router.

Realtek aren't exactly known for quality products.

6ms is extremely high. I mean, hell through the INTERNET between my house and my office between Verizon and whatever telecom my gov't employer is using is 7-8ms over several routers, probably across network providers and probably at a minimum 3 routers and more like 4-5 (I haven't network traced it).

The highest internal ICMP latency I have see across a WIRELESS link, 2 servers and probably a combined distance of 250ft of wired and wireless results in about 5-8ms of latency. Wired only network, the worst I have generated is 1.3ms across 2 switches and a 100+ft of cat6 with one of the end devices being 100Mbps and not GbE. Switches, even store and forward type which are pretty much all consumer routers and switches have for their switch ports introduce latency on the level of dozens to hundreds of MICROseconds for gigabit.

I would suspect a bad NIC or a bad cable.

 

[jime1]

@azazel1024: TYSM for your valuable input on this issue, Sir/Mate !

now, I'm afraid that the culprit is NIC, but still I'll check out a spare CAT5 cross cable and see whether it makes any difference ....

 

[Genx87]

Are you setting the line speed or letting it auto sense? I have seen issues with latency when mismatching line speeds.

Another option is to get a cheapy PCI nic and see if the issue is still there.

Edit: One other thing. Are you getting the drivers from the mobo website or the realtek website? I have had issues with downloading drivers from the manufacturer. In my case Dell had some really crappy Intel drivers for my laptop. It wouldnt connect above 10Mbps. I downloaded the drivers for the nic right from Intels website and it worked flawlessly at 1Gbps.

 

[jime1]

@Genx87 : fine mate, I'll download the drivers from intel site, although I believe that there are no drives available for my mobo (DG41RQ) for win 8.1 OS.
everything is auto, I never mess with such settings

PS : I tried out that CAT5 cable too, and the issue is persistent

 

[VirtualLarry]

I'll concur with the others. 6ms and 15ms ping to a local LAN-connected device is crazy-high.

Should be less than or maybe 1ms at the most.

 

[Dahak]

I would try the latest realtek drivers if you have not yet
http://www.realtek.com.tw/downloads...5&Level=5&Conn=4&DownTypeID=3&GetDown=false#1

 

[jime1]

I'll concur with the others. 6ms and 15ms ping to a local LAN-connected device is crazy-high.

Should be less than or maybe 1ms at the most.

I would try the latest realtek drivers if you have not yet
http://www.realtek.com.tw/downloads...5&Level=5&Conn=4&DownTypeID=3&GetDown=false#1

I found a latest chipset driver for my mobo yesterday and installed it, now I get <1ms local ping !! :\

so is it possible that the NIC has something to do with the mobo's chipset ?

PS : I already installed the latest realtek drivers for NIC

 

[JackMDS]

Just in case you do not know a new nic is one of the most inexpensive computer's component.

 

[jime1]

Just in case you do not know a new nic is one of the most inexpensive computer's component.

haha, I know mate !
but unfortunately now, I'm that poor

& again now the local ping is back to jumping around 15ms to 6ms

 

[kevnich2]

Install another NIC in your computer and test? They're fairly cheap

 

[jime1]

ya.. no other option !

tysm y'all

 

[jime1]

I think I'll get a new PCI NIC card, guy please do recommend a good 100MBps NIC
PS: I'm TP-Link Fanboy