D6200 has no internet connection until power cycled

[ClaireLC]

Hello,

Over the last week or so my internet connection has been having issues. After a certain amount of time without use (ie while I'm at work) if I then attempt to use the internet there is no connection until I power cycle my modem/router (D6200). After this I have no issue until next time the connection is idle for a time. 

I can connect to the modem/router via the wifi so I know the issue isn't the wifi connection.

When there's no internt there is no indication from the modem/router that there is any problem, no flashing lights, every light is the colour it chould be (green/blue). 

I don't have the home phone connected so there is no splitter on the internet connection and this is the only phone outlet I have.

Any help appreciated.

[michaelkenward]

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@ClaireLC wrote:
I can connect to the modem/router via the wifi so I know the issue isn't the wifi connection.

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I'm a bit confused. Does this mean that you can still connect to the Internet using wifi before you restart the modem?

If so, it may be a local network (LAN) issue. Is it a wired connection that loses the Internet?

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@ClaireLC wrote:
I don't have the home phone connected so there is no splitter on the internet connection and this is the only phone outlet I have.

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Is the a DSL filter though? You need that even without a phone.

[ClaireLC]

Hi, thanks for the reply. The LAN is working (both wifi and wired) so I can look at the modem details, the modem router dealing with the incomming internet connection seems to have the issue. There is a DSL filter on the line but no splitter. I have no connection issues whilst I'm using the internet, just after its been idle for a while. Again, thanks for the help.

[antinode]

> Is the[re?] a DSL filter though? You need that even without a phone.

   Not really.  The whole purpose of a DSL filter is to keep the
high-frequency DSL data signal away from plain-old telephones.  A DSL
modem should be connected directly to the phone line.  An ordinary
telephone must be isolated from the phone line by a DSL filter.

   One type of DSL filter, which may be called a "splitter", simply
provides one directly-connected ("DSL") port, and one filtered ("PHONE")
port.

   No phone?  No filter needed.

> [...] There is a DSL filter on the line but no splitter. [...]

   _That_ sounds troubling.  How, exactly, is this (unnecessary?) filter
connected?  Feeding a DSL modem through a filter sounds like a good way
to get a very poor DSL signal.

[ClaireLC]

Hi antinode, when I read your comment I went back and double checked what the line is connected through. I had to dig around behind the furniture a bit but I found that it isn’t infact a DSL filter, the line actually runs through a power board (for electrical isolation as I have previously have all my equipment fried by a lightning strike!). I’ve temporarily bypassed the powerboard and now have the line running from the wall to the modem... I will check the connection this afternoon to see if the situation is improved. Thanks for the help.

[michaelkenward]

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@ClaireLC wrote:
....I have previously have all my equipment fried by a lightning strike!

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That's one reason for using a DSL filter, even when you don't have a phone. (A filter is also useful when you phone socket and modem socket are different, as they are in the UK, where you would have a hard time plugging a modem into the phone's wall socket.)

Lightning got me some years ago, hit the overhead phone line, took out a bunch of kit. (Remember fax machines?) The PC died because it had an on-board dial-up modem with a direct connection into the phone socket.

Anything between the important stuff – modems and things that cost money – can act as a buffer. It gets fried before the bits after it. No guarantees, of course, but every little bit helps.

[antinode]

> [...] the line actually runs through a power board (for electrical
> isolation [...]

   Without actually looking at its innards, or making some measurements
beyond the capability of typical household test equipment, it's hard to
say if such a surge/transient protective device would bother a DSL
signal.  However, if your D6200 web interface looks like that of my
D7000, then you could look at ADVANCED > ADVANCED Home : Internet Port :
Show Statistics, and see if the Link Rate, Line Attenuation, and Noise
Margin values change significantly when the extra gizmo is inserted or
removed.  A change of one or two dB in the latter two values would
probably be insignificant, but a bigger degradation might matter more.


> That's one reason for using a DSL filter, even when you don't have a
> phone.  [...]

   Not really.  At least, not using the commonly accepted definition of

"DSL filter":

      https://en.wikipedia.org/wiki/DSL_filter

   A protective device (_not_ a "DSL filter") on the phone line may be
valuable, unless it degrades the (high-frequency) DSL signal.  The fact
remains that a DSL filter (as normally defined) goes between a phone
line and a normal telephone (or other analog telephone-like device), not
between a phone line and a DSL modem.

   In a DSL filter-splitter, the phone line is connected directly to the
DSL port; the filter part goes between phone line and the "PHONE" port.
A DSL filter-splitter provides no more protection to a DSL device than
any other passive phone-line coupler would (that is, practically none).

[ClaireLC]

Ok, no improvement. Next step, even though I haven’t changed any settings but the modem password, I’ve now done a hard reset. If that doesn’t work I’ll be hooking up another modem and if there’s still no improvement I’ll be having a chat with my ISP. Somewhere in all that there has to be an answer. Thanks for the replies though. Claire