Please help me troubleshoot duplicate ACKs and missing packets on home network

[Kouji71]

Hello all,

I'm not at all a networking expert, and the networking issues I'm having are beyond me, and I'm hoping someone could help me figure out where to start figuring out where my issue lies.

I am getting incredibly slow speeds on my home LAN. Running a lan speed test between my desktop and and an SSD on my server (both on 1Gbps ethernet), for instance gives:

Which is much slower than what I've been getting previously.

Here's a block diagram of my network:

Everything is on 192.168.0.0/24 (via eth1 on the edge router) except for IOT devices, which use a VLAN tagged wireless SSID to access the 192.168.4.0/24 network via eth2. The smarthings hub is attached to eth3 and has its own subnet, because I'm hoping someday I'll figure out the router well enough to be able to block traffic between the subnets and keep IOT traffic off my main network.

Using wireshark from my desktop during an internet speed test shows lots of tcpip errors such as out of order packets and duplicate ACKs (though i'm not sure what that means).

Also, when running the internet speed test, the usage graph on the edge router x looks like this:

Why is there so much traffic going to the IOT network from the speed test? When running the speed test with the modem directly attached to the PC, I get my advertised download speeds of 150mbps.

I guess my two thoughts are either there's EM interference in the lines somewhere, or I've somehow configured something wrong when I was setting up the VLANs.

Here's the VLAN configuration for the upstairs switch:

And here's the VLAN configuration for the basement switch:

I've also attached the config file for the router, in case that's helpful. If there is any other information that would be useful, please let me know, and I will be happy to get it.

 

[coxhaus]

In my mind you should have ports defined to VLAN 4 as access ports. Your default VLAN is 1 which carries all untagged traffic. I defined all VLAN 1 ports as access ports to VLAN 1.

I am not sure on your diagram for VLAN 4 it is showing 2 members one tagged and one untagged. When I look at my setup for VLAN 4 it will show 4UP for client ports. I do not have the same switch as you nor do I use the same software. But if you look at a VLAN it should show 4UP or 1UP for client ports. Trunk ports which carry all the VLAN traffic would show 1UP,4T. Maybe you are using trunk ports instead of access ports. All clients should be on an access port and network devices which use multiple VLANs should be connected with a trunk port. So your switches would be connected with trunk ports and wireless devices which use multiple SSIDs with different VLANs.
I guess your router should be a trunk port unless you have a layer 3 switch. Some network device needs to do the layer 3 routing for the VLANs. I always assign a network to each and every VLAN.

So are you assigning ports as access ports for clients in each VLAN the client should belong?

Port 3 should be assigned as an access port in VLAN4. Then you would plug your device in port 3 which will make that PC a member of VLAN4. And the PC should receive a DHCP IP address for VLAN4.

In the wireless setup for each SSID assign a VLAN to each SSID. And make sure the wireless is connected with a trunk port.

PS
I am using Cisco's terminology. You will need to cross what I said to your switch if it does not use Cisco terminology. Sorry I only know Cisco switches and terminology.

 

[abailey]

What are the PVID's for each port on each switch? Which port are you using on the basement switch to uplink to the upstairs office switch? I assume port 3 on the upstairs switch is what you use to connect to the ERX Eth1? I have an ERL but I am not real familiar with the ERX. Looking at your setup, though, it looks like you are using Eth1, Eth2, and Eth3 each in their own subnet and you are not using Eth4. If so then what is switch0? I thought you only use switch interfaces when you are bridging at least 2 or the ethernet ports together? I guess what I'm asking is what ports are assigned to switch0?

ADDED: Ok looking at your config file it appears only Eth4 is assigned to switch0 so no big deal.

ADDED: Are there things you are not showing us? If you have only one uplink to the ERX from the upstairs switch and your not running VLANs on the ERX then there is no need to use any tagged ports and you can just use the default VLAN on the switches.

 

[coxhaus]

Cisco switches are very simple with VLANs. You assign a port type. Then you assign the port to a VLAN. Then you assign an IP network to a VLAN.

You really never worry about PVIDs as they are layer 2 and you are working at layer 3. Once in a while with default VLANs and non-VLAN switches.