LAN2 Cannot Connect to main LAN

IanHK

Hi NogBTB,

Smart thought - bizarre result!

I cable connected my PC directly to the LAN2 interface and it gives me:

a LAN address of 192.168.1.20 NOT the expected LAN2 address of 192.168.2.20
Subnet mask 255.255.255.0

I originally had the static mappings on the LAN DHCP, and duplicated them to LAN2 (changing x.x1.x to x.x.2.x) so these devices (MACs) are defined in static mappings on both LAN and LAN2.

I am guessing this is the root cause, and in a steady state I could remove them from LAN once LAN2 is actually working, but should a PC connected to LAN2 be served an LAN IP and/or is there a way to stop it happening while keeping the fallback mappings on the LAN DHCP ?

Thanks

NogBadTheBad

Post a copy of the following:-

An ipconfig /all when directly connected to LAN2
An arp -a when directly connected to LAN2
Status-> Interfaces LAN & LAN2.

IanHK

Will do, thanks. Just need a moment to let things settle....

IanHK

Current status:

I removed the "duplicate" static mappings so now LAN only has static IPs defined for the wired devices, and LAN2 only has static mappings for the WiFi devices.
For my workstation, I removed all static mappings so it is just picku\ing up DHCP settings.
LAN2 is defined as 192.168.2.0/25 - I only did this to force a change to be saved to see if it would solve the 255.0.0.0 issue
I rebooted pfSense
I double-checked the workstation is using DCHP - when the pfSense box / AP went wonky last night I had a fixed IP which may have caused the situation earlier today, not sure of anything anymore!

Now, with workstation connected directly to LAN2, I am seeing an x.x.2.x DHCP assigned IP - as expected - but the subnet mask is STILL 255.0.0.0

Attached items as requested:

ipconfig /all
arp -a
pfSense Status > Interfaces

IpConfigAll.txt

Arp-a.txt

NogBadTheBad

192.168.2.1 00-0d-b9-50-e9-82 dynamic

hmmm your getting DHCP from the pfSense LAN2 interface, thats why I asked for the arp -a, to tie in the DHCP server IP and the MAC address.

The subnet mask is now /25 rather than /24.

Can you post a screenshot from the LAN2 config and the DHCP settings for LAN2.

IanHK

Thanks - here you go...

NogBadTheBad

https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.txt

https://tools.ietf.org/html/rfc2132

Remove DHCP option 1 and try again.

No need to go anywhere near the options config for standard users.

IanHK

You've got to be kidding! That just looked like a default panel with nothing saved - pfSense usually adds rows of saved items in a table underneath.

Anyway, I needed to add another row to get a delete option but when i did, the DHCP assigned mask is immediately the expected 255.255.255.0 and from my x.x.2.x workstation I can access the NAS webgui on x.x.1.x

So grateful - many, many thanks.

NogBadTheBad

@IanHK

You can just blank the entry :)

NogBadTheBad

@IanHK said in LAN2 Cannot Connect to main LAN:

You've got to be kidding! That just looked like a default panel with nothing saved - pfSense usually adds rows of saved items in a table underneath.

Anyway, I needed to add another row to get a delete option but when i did, the DHCP assigned mask is immediately the expected 255.255.255.0 and from my x.x.2.x workstation I can access the NAS webgui on x.x.1.x

So grateful - many, many thanks.

You should be getting a mask of 255.255.255.128 if you have a /25 mask set.

IanHK

Yes, that's what I get with the /25 setting. Thanks again.