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Slow down in a home network

SeeDk
SeeDk asked
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Last Modified: 2017-05-29
This has been happening for roughly 10-15 minutes every few days. No real set time that it occurs.
The internet from the ISP is 300Mbps but during those 15 minutes it will throttle down to ~50Mbps.
This happens for computers both physically connected and wifi devices.
My first thought was maybe the DHCP pool ran out of IPs but I'm seeing there are ~50 spare IPs at any given time. Don't see anything wrong in the DHCP logs.
Now I have started running Wireshark on the DHCP server hoping to find anything that looks out of the ordinary but the issue has not reoccurred after I started logging. What should I look out for?
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Edward PamiasTeam Lead RRS Desk
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I mentioned DHCP because when connecting a mobile to wifi - the wifi connection window would spin for a long time without connecting. I've seen that before when IPs have run out on the server.
Yes, the speedtest right now is fine; it is only during these short windows that there is a slow down.
Haven't checked with the ISP yet to confirm if they have seen any problems.
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ISP is Verizon I will call them and ask if they can monitor for a few weeks. Not seeing anything internal causing the issue and it hasn't occurred again after I started logging with Wireshark
Edward PamiasTeam Lead RRS Desk
Top Expert 2016

Commented:
Are you using their router? They told me I had to or they would not guarantee the speeds. I have their gigabyte service.

Author

Commented:
Their router is being used for the internet. An ASA is plugged into the router and then two switches are plugged into the ASA. The speed is consistently 300Mbps except for these random occurrences.
JohnBusiness Consultant (Owner)
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If the speed is normally consistent except for random and spaced occurrences, there is probably nothing to worry about.
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Shaun VermaakSenior Consultant
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JohnBusiness Consultant (Owner)
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Range of solutions provided.
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