[Closed] System and network slow, DHCP problem??

johnpoz

you do know machines tend to do stuff in the background even if your not actively having a browser session open.. I would track down some of the public IPs to who owns them, and look on your machines specifically for what processes have those connections open if your worried look on 0.1 and 1.12 for that they might be doing..

Derelict

You are still getting DHCP requests from the same MAC address on re1 and re2 nearly simultaneously. As I said before, diagram your network. You have something seriously hosed. Probably at layer 2 (switching and wifi APs.)

Oct 8 12:12:07 Gateway dhcpd: DHCPREQUEST for 192.168.2.150 (192.168.2.1) from 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:07 Gateway dhcpd: DHCPACK on 192.168.2.150 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:17 Gateway dhcpd: DHCPREQUEST for 192.168.2.150 (192.168.2.1) from 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:17 Gateway dhcpd: DHCPACK on 192.168.2.150 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:21 Gateway dhcpd: DHCPREQUEST for 192.168.2.150 from 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:21 Gateway dhcpd: DHCPACK on 192.168.2.150 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:23 Gateway dhcpd: DHCPREQUEST for 192.168.2.150 from 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:23 Gateway dhcpd: DHCPACK on 192.168.2.150 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:23 Gateway dhcpd: DHCPDISCOVER from 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:23 Gateway dhcpd: DHCPOFFER on 192.168.2.150 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2
Oct 8 12:12:25 Gateway dhcpd: DHCPDISCOVER from 78:4b:87:dd:aa:24 via re1
Oct 8 12:12:25 Gateway dhcpd: uid lease 192.168.1.159 for client 78:4b:87:dd:aa:24 is duplicate on 192.168.1.0/24
Oct 8 12:12:29 Gateway dhcpd: DHCPREQUEST for 192.168.1.147 from 78:4b:87:dd:aa:24 via re1
Oct 8 12:12:29 Gateway dhcpd: DHCPACK on 192.168.1.147 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re1
Oct 8 12:12:29 Gateway dhcpd: DHCPOFFER on 192.168.1.159 to 78:4b:87:dd:aa:24 (android-737119de387638b0) via re1
Oct 8 12:12:36 Gateway dhcpd: DHCPREQUEST for 192.168.1.147 from 78:4b:87:dd:aa:24 (android-737119de387638b0) via re2: wrong network.
Oct 8 12:12:36 Gateway dhcpd: DHCPNAK on 192.168.1.147 to 78:4b:87:dd:aa:24 via re2
Oct 8 12:12:38 Gateway dhcpd: DHCPDISCOVER from 78:4b:87:dd:aa:24 via re2

cmb

@Derelict:

You have something seriously hosed. Probably at layer 2 (switching and wifi APs.)

Yes, this.

Restarting DHCP did absolutely nothing to any kind of slowness. DHCP either works, or it doesn't. Systems are either online and have an IP, or they don't. There is no in between, DHCP can't make things slow, they either work or they don't.

The logs from DHCP are quite telling though, you have something seriously wrong on your network from the looks of it.

Derelict

My guess is re1 and re2 are connected to the same unmanaged switch, but that's just a guess. A diagram would tell the tale.

cmb

@Derelict:

My guess is re1 and re2 are connected to the same unmanaged switch, but that's just a guess.

They're somehow interconnected where they shouldn't be, for sure. Hard to say how or where without knowing more.

Mellowlynx

Oke, I will check all the cabling, and change the private wifi pass.
But still I think it's strange that something works for 16 days and then decides to stop working.

@Derelict:

My guess is re1 and re2 are connected to the same unmanaged switch, but that's just a guess. A diagram would tell the tale.

This is not possible, re2 is directly connected to the guest wifi
re1 is connected to a switch and then goes upstairs to the wifi there.

No repeaters, extenders or anything.

[Added]
Decided to try something differed and switch the private wifi to re2
To see what happens and that the owners have no problems switching from one to the other.

Derelict

One nice thing about IP networking is there is no guesswork necessary. It is what it is.

I can never understand why people just "try things" to see if it works. Find the fault and fix it.

Mellowlynx

@Derelict:

I can never understand why people just "try things" to see if it works. Find the fault and fix it.

I'm not just trying, I have the same type of network at home and that runs fine.
and here we do need a guest wifi, we do not wand the payment terminal and POS system on the same network as the guests.
But yes, I'm not a pro… I do this for "fun" but this is getting annoying.

The problems started after a power outish.
At the power restore the old cases power supply and mainboard broke.

Derelict

Do you have the same SSIDs on the two wifi APs?

(I also don't understand why someone would hire someone who does this for "fun" when the problem is as important as PoS segmentation from guest networks, but that's probably just me.)

Mellowlynx

@Derelict:

Do you have the same SSIDs on the two wifi APs?

Nope both have differed names and the private one has a WPA2 pass
Guest is open.
But the owners do switch between booth.

@Derelict:

(I also don't understand why someone would hire someone who does this for "fun" when the problem is as important as PoS segmentation from guest networks, but that's probably just me.)

They don't hire me, that ask of i know a solution for there request.
as there friend I showed them my setup and ask me to get it installed.

Everything was running fine for almost two years. until the blackout.

Mellowlynx

Back on topic, re2 is now both wifi networks and for now everything seems to be working.

let's hope it will stay this way.

Derelict

Umm. So your private and guest networks are now on the same subnet? Thought you wanted them isolated.

Since you refuse to provide requested details and just want to plug things into different ports instead of actually design it in a correct, secure manner, I guess a "good luck" is in order.

Mellowlynx

@Derelict:

Umm. So your private and guest networks are now on the same subnet? Thought you wanted them isolated.

Only the wifi, lan is still a separate on and on there is the POS and Payment gateway.
And it should be temporarily

@Derelict:

Since you refuse to provide requested details and just want to plug things into different ports instead of actually design it in a correct, secure manner, I guess a "good luck" is in order.

I may have missed something, but I do not see any data requests in this topic.
Else I would post them no problem, I want to fix this.

I think I'm misunderstood, I do not want to " just plug things into different ports" I do what to fix this, but the Lan is working fine so I can't just shutdown the network for the day. They are open all day and I'm trying to work without giving them problems.

Also I did check the lan today everything is fine, from the music pc to the pos everything is connected the right way.
So no, I have no idea why a phone would request a ip on both networks ate the same time.

Again, If I can provide you some information that can make the situwation or problem more clear,
let me know and I will post it.

Derelict

Yeah. Make a diagram.

If you have both wifi networks on the same subnet, one open and one with WPA, they might as well both be open. They're the same network.

Mellowlynx

Guess I missed that one, but here you go.

This how is was this morning!

Derelict

Back on topic, re2 is now both wifi networks and for now everything seems to be working.

So you moved your private wifi to re2? Now it's the same network as your guest wifi. Might as well not have a WPA passphrase on it.

And how did you do that without adding a switch to re2?

Mellowlynx

@Derelict:

Back on topic, re2 is now both wifi networks and for now everything seems to be working.

So you moved your private wifi to re2? Now it's the same network as your guest wifi. Might as well not have a WPA passphrase on it.

And how did you do that without adding a switch to re2?

Yes I did, but once again it's temporarily.

I did add one, the image is the situation before moving the wifi.
aka the situation the problems started.

Mellowlynx

BTW, I still see this


Oct 9 22:12:09	dhcpd: DHCPREQUEST for 192.168.2.18 from 20:16:d8:a6:15:8a (Nicole) via re2
Oct 9 22:12:09	dhcpd: DHCPACK on 192.168.2.18 to 20:16:d8:a6:15:8a (Nicole) via re2
Oct 9 22:12:09	dhcpd: DHCPREQUEST for 192.168.2.18 from 20:16:d8:a6:15:8a (Nicole) via re2
Oct 9 22:12:09	dhcpd: DHCPACK on 192.168.2.18 to 20:16:d8:a6:15:8a (Nicole) via re2

Should be just one request and one pack right?

Derelict

Don't know why the client is requesting twice. Either the client is requesting it twice or your network is sending it to the DHCP interface twice (like there's a layer 2 loop or something.)

Mellowlynx

@Derelict:

your network is sending it to the DHCP interface twice (like there's a layer 2 loop or something.)

The switches are both unmanaged, so is there a way this could be done with settings in pfsense??