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Network getting overloaded

S

snoturtle

Golden Member
Hi all

Have been having an issue now off and on for a couple of weeks now and can't figure out what is causing it

I have a Dlink dir-655 router with a Dlink dgs-2208 8 port gigabit switch plugged into it

What happens is I will notice the network slowing way down
wireless clients think they have been disconnected and everything else comes to a stand still
During this time I can ping the router which is normally at <1ms
when these slow downs occur ping times go upwards of 3000ms

If I unplug the switch from the router the problem goes away and when I plug it back in after 30 seconds or so everything is back to normal

Thought at first it had something to do with a new HDhomerun Prime and the 2 xboxes that I added to the network as I noticed initially when I was watch tv

But it has happened twice in the past 2 days when the xboxes were not on

Any help or advice would be great 🙂
 
snoturtle said:
Hi all

Have been having an issue now off and on for a couple of weeks now and can't figure out what is causing it

I have a Dlink dir-655 router with a Dlink dgs-2208 8 port gigabit switch plugged into it

What happens is I will notice the network slowing way down
wireless clients think they have been disconnected and everything else comes to a stand still
During this time I can ping the router which is normally at <1ms
when these slow downs occur ping times go upwards of 3000ms

If I unplug the switch from the router the problem goes away and when I plug it back in after 30 seconds or so everything is back to normal

Thought at first it had something to do with a new HDhomerun Prime and the 2 xboxes that I added to the network as I noticed initially when I was watch tv

But it has happened twice in the past 2 days when the xboxes were not on

Any help or advice would be great 🙂
Click to expand...

Are all of your things plugged into the switch? Try offloading some to the onboard LAN ports on your router if you can, or even better, take a second line to the switch and use both of them for uplink. That is if your switch supports that.

When you say after 30 sec everything is back to normal, do you mean normal speed (before the problem) or normal speed after the problem occoured.
 
Last edited:
Smoblikat said:
Are all of your things plugged into the switch? Try offloading some to the onboard LAN ports on your router if you can, or even better, take a second line to the switch and use both of them for uplink. That is if your switch supports that.

When you say after 30 sec everything is back to normal, do you mean normal speed (before the problem) or normal speed after the problem occoured.
Click to expand...


The router has 2 desktops the vonage box and than 1 cable to the switch
everything else is plugged into the switch

Yes right after I unplug the switch from the router everything goes back to normal speeds
If I wait ~30 secs and plug the switch back into the router it is still all normal

I will have to look if the switch supports 2 lines like that
 
Well it finally happened again
This time I went plug by plug on the switch unplugging things
When I unplugged my server machine everything went back to normal (<1ms pings to the local network)
As soon as I plugged it back into the switch everything went to a crawl(2000-3000ms pings to the local network)
I tried changing the network cable but that didn't help
Once I restarted the server machine and plugged it back into the switch all was fine again

Tomorrow I am going to replace the network card in that machine with a dual port intel card that I picked up and see if that will help

Any other ideas that this could be?
 
If you somehow had two paths to the same device (like one wired, one wireless), you may have created a bridge loop (switch loop, broadcast storm...) which swamps the connected devices.
 
Broadcast storm was wait I had originally wondered about also but the machine that is causing the issue only has the one wired port for now

Am going to disable it and put in the Intel card and see what happens
 
Changed the network card and thought all was ok

Came home today to find the network at a stand still again 🙁

Pinging the router from my main machine while the server has plugged into the network
Reply from 192.168.1.3: bytes=32 time=1790ms TTL=64
Reply from 192.168.1.3: bytes=32 time=941ms TTL=64
Reply from 192.168.1.3: bytes=32 time=1957ms TTL=64
Reply from 192.168.1.3: bytes=32 time=1028ms TTL=64

Pinging the router as I unplug the network cable from the switch
Reply from 192.168.1.3: bytes=32 time=596ms TTL=64
Reply from 192.168.1.3: bytes=32 time<1ms TTL=64
Reply from 192.168.1.3: bytes=32 time<1ms TTL=64
Reply from 192.168.1.3: bytes=32 time<1ms TTL=64

Have checked task manager and have a network meter plugin running and I don't see anything unusual on either
 
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