Solved

HP Envy Laptop slowing down the company's WAN but not LAN

Posted on 2016-08-31
4
44 Views
Last Modified: 2016-09-13
HP Envy laptop (Intel i7, 12GB RAM, Windows 10 Pro). Dynamic IP acquired from Server 2012R2 machine

Company moved into a new building (recently built).  Server and about 7 computers connected to a DSL modem, 7mbps down, 0.5 mbps up.  (Waiting for fibre on this street)

When this HP laptop is connected to the wired LAN, ping times to Google's server at 8.8.8.8 rise from a norm of about 30 mS to 1600 to 2000 mS!

This issue did not seem to exist at their old location (though they were 75mbps fibre there, so maybe it did but wasn't severe).  I have removed and reinstalled the network adapter driver.  No difference.  pings to local PCs appear to be fine, typically <1mS.

The only change in the topography is that the 2012 R2 server is new, and it is now the DHCP server (and DNS).  While this laptop is disconnected, no issues are experienced.  Probably important: The same issue is experienced when the WIFI is used on the laptop instead.

Any idea of how to troubleshoot this?
0
Comment
Question by:DaveWWW
  • 2
  • 2
4 Comments
 
LVL 35

Accepted Solution

by:
Kimputer earned 500 total points
ID: 41778277
This is normal behaviour! Any connection wiht 0.5 mpbs up will have these ping values whenever there's a bit of traffic.
Removing and reinstalling NIC's wasn't necessary at all. You can't ever get better pings with this slow ADSL line.
Just get the HP to another faster connection, have all the Windows updates installed, and you'll probably have a little bit less problems on the WAN. If it still continues, just check what the HP is actually transferring all the time. If it's important (like Windows update), there's nothing you can do. If it's less to not important (dropbox syncing unimportant files), close the programs/services. That's the best you can do.
If you don't believe me, use ANOTHER PC, and do continuous speedtest.net runs. You'll see the ping spike just as badly.
If not, the HP is probably doing what it shouldn't be doing (down/uploading torrents).
0
 

Author Comment

by:DaveWWW
ID: 41778312
Thanks Kimputer.  And yes, since my message I have checked and seen that the ping times are bad.  It seems like with this horrible DSL, there is a tipping point, because yesterday when I was observing the ping times of around 2000 on a desktop, unplugging the laptop made it go to 28 mS within a second or so.  Plugging the laptop back in made them go high.  But today, the tests results were not so cut-and-dried.  

The DSL provider is saying that the connection is working normally, so I'm now thinking that a computer on site must be either infected, or downloading updates, etc.

Thanks again.
0
 
LVL 35

Expert Comment

by:Kimputer
ID: 41778848
If you don't have the correct monitoring hardware, or a really old network hub, or a managed switch with port mirroring capability, I'm afraid you're back to the unplugging method of testing.
0
 

Author Closing Comment

by:DaveWWW
ID: 41796452
It turns out that the network was able to be brought to a crawl by several PCs streaming data to an offline backup.  I resolved it by configuring the backups to run at night. Thanks.
0

Featured Post

Give your grad a cloud of their own!

With up to 8TB of storage, give your favorite graduate their own personal cloud to centralize all their photos, videos and music in one safe place. They can save, sync and share all their stuff, and automatic photo backup helps free up space on their smartphone and tablet.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the hope of saving someone else's sanity... About a year ago we bought a Cisco 1921 router with two ADSL/VDSL EHWIC cards to load balance local network traffic over the two broadband lines we have, but we couldn't get the routing to work consi…
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
In this Micro Tutorial viewers will learn how to restore single file or folder from Bare Metal backup image of their system. Tutorial shows how to restore files and folders from system backup. Often it is not needed to restore entire system when onl…
This tutorial will walk an individual through the process of configuring their Windows Server 2012 domain controller to synchronize its time with a trusted, external resource. Use Google, Bing, or other preferred search engine to locate trusted NTP …

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now