Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-08-2020, 12:48 PM   #1
Loyal Site Supporter
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North-East of England
Posts: 14,932
New Raspberry Pi 4B user - IP address allocation?

So... I recently acquired a Raspberry Pi 4B. I've it set up running Raspbian Buster just fine, and connected it to my ADSL router / modem using wifi.

My ADSL router is DHCP enabled to dynamically allocate IP addresses to all of my connected devices. Since I'll need to repeatedly connect to the Pi from other devices (both for SSH and VNC control, and for some forthcoming projects), I want to set a static IP address for it.

Normally, to do this, I would access my router's DHCP config page (gateway address 192.168.1.1), list all of the connected devices and then add a reserved IP address for the relevant device... but I don't see the Pi in the connected list, even though it's definitely connected and accessing the router just fine. Checking the wlan0 IP address for the Pi, I note it as 192.168.1.102, and I can successfully access it from another machine with SSH or VNC Viewer using this address - but I don't see that in my list of connected devices (nor indeed the "raspberrypi" host name) Now, if I reboot the Pi - and it doesn't matter how many times I do this - it seems to have the same IP address... which is good, in a way, because it seems as if it's already set up for a static address... but I see no such configuration in the dhcpcd.conf config file. I'm confused

Can anyone shed any light on why I'm not seeing a device with the 192.168.1.102 address in my router's DHCP list, and why I repeatedly get the same address for my Pi without any apparent config settings to force this?

If I add the necessary settings to that config file, I can set a different static IP address, so I'll do that anyway...

As you can probably tell from my descriptions above, I'm not experienced in networking. Nor am I especially experienced in Linux at the command line level (though I can work my way around with instructions), and I'm absolutely new to the Pi and Raspbian.

Thanks in advance


Last edited by BigMackCam; 05-08-2020 at 01:38 PM.
05-08-2020, 01:00 PM   #2
Pentaxian
bertwert's Avatar

Join Date: Jun 2015
Location: Golden, BC
Posts: 13,280
Have you tried rebooting the router?
05-08-2020, 01:08 PM   #3
Loyal Site Supporter
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North-East of England
Posts: 14,932
Original Poster
QuoteOriginally posted by bertwert Quote
Have you tried rebooting the router?
I haven't, bert, but I can refresh the DHCP config page and see items appear and disappear as I connect and disconnect them from the network...
05-11-2020, 06:24 AM   #4
Forum Member




Join Date: Jan 2017
Location: Beaumont, Texas
Posts: 84
DHCP will (tend to) keep IP addresses for devices the same, as long as no new devices are added while one of the existing devices is not present. Then it looks for the lowest unused address. Existing devices get to reuse the same address, unless it has been reassigned.
The trick is to remember what's turned off.....
I messed with setting fixed IP's trying to set time limits on my kids, but that was 10 years ago, so take this with a grain of salt.
I've never messed with anything but windows on a network, so I'm no help on the Pi issues.
A suggestion, though. You be able to look up attached hexadecimal addresses on the router, to see what is connected.
Compare that against your RP to see if there is a match. The equivalent command in windows, at the command prompt, is IPCONFIG /ALL. Without other switches added, it only displays data, and doesn't make any changes.
Good luck!

Kirk B.

Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
address, config, devices, ip, list, pi, router, user ip address
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Raspberry Pi 12mp dslr Sam_I_am Non-Pentax Cameras: Canon, Nikon, etc. 12 05-01-2020 01:25 PM
Anyone set up Raspberry Pi 3 for photo processing use? BigMackCam Digital Processing, Software, and Printing 22 04-25-2018 12:19 PM
Raspberry Pi Pixel for Mac and PC boriscleto Digital Processing, Software, and Printing 4 12-24-2016 05:33 PM
Raspberry Pi Linux micro machine enters mass production jolepp General Talk 3 01-14-2012 04:32 PM



All times are GMT -7. The time now is 09:47 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top