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Two RB's linked on the same network by mistake
Posted: Thu Jun 21, 2018 6:23 pm
by floripaolo
Hello everyone!
I have two RbPi's running on the same wifi network. When I open my network manager on my router I see that the first device has no IP assigned and the second device is supposed to be connected to the first one (and sometimes, not always it shows the first one's IP address). Furthermore on the second device i get a hyperlink that leads to the standard Apache2 page. I uninstalled Apache2 but nothing changed. I have no idea what happened and how to clean up this mess....
Re: Two RB's linked on the same network by mistake
Posted: Fri Jun 22, 2018 11:23 am
by lmarmisa
Take a look at the RPis side too. Type these commands on your RPis:
Code: Select all
iwconfig wlan0
ifconfig wlan0
ip route
Re: Two RB's linked on the same network by mistake
Posted: Fri Jun 22, 2018 1:29 pm
by floripaolo
The first one:
Code: Select all
pi@raspberrypi:~ $ iwconfig wlan0
wlan0 IEEE 802.11 ESSID:"Topazio"
Mode:Managed Frequency:2.412 GHz Access Point: xxxxxxxxxxxxxxxx
Bit Rate=13 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=33/70 Signal level=-77 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:63 Invalid misc:0 Missed beacon:0
pi@raspberrypi:~ $ ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.178.100 netmask 255.255.255.0 broadcast 192.168.178.255
inet6 fe80::xxxxxxxxxxxxxxxx prefixlen 64 scopeid 0x20<link>
ether b8:27:exxxxxxxxxx txqueuelen 1000 (Ethernet)
RX packets 9005 bytes 1105484 (1.0 MiB)
RX errors 0 dropped 436 overruns 0 frame 0
TX packets 18658 bytes 1780154 (1.6 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
pi@raspberrypi:~ $ ip route
default via 192.168.178.1 dev wlan0 src 192.168.178.100 metric 302
192.168.178.0/24 dev wlan0 proto kernel scope link src 192.168.178.100 metric 302
and the second one:
Code: Select all
pi@raspberrypi2:~ $ iwconfig wlan0
wlan0 IEEE 802.11 ESSID:"Topazio"
Mode:Managed Frequency:2.412 GHz Access Point: 24:65xxxxxxxxxx
Bit Rate=5.5 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=56/70 Signal level=-54 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:21 Invalid misc:0 Missed beacon:0
pi@raspberrypi2:~ $ ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.178.36 netmask 255.255.255.0 broadcast 192.168.178.255
inet6 fe80::e2xxxxxxxxxxxxxx prefixlen 64 scopeid 0x20<link>
ether b8:2xxxxxxxxxxxx txqueuelen 1000 (Ethernet)
RX packets 167 bytes 20673 (20.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 154 bytes 23730 (23.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
pi@raspberrypi2:~ $ ip route
default via 192.168.178.1 dev wlan0 src 192.168.178.36 metric 302
192.168.178.0/24 dev wlan0 proto kernel scope link src 192.168.178.36 metric 302
I can't see anything unusual.
Re: Two RB's linked on the same network by mistake
Posted: Fri Jun 22, 2018 5:54 pm
by Ernst
FYI my brain stopped working when I noticed that you have masked the mac addresses.
If you need help then provide complete information, do not remove information that is needed to analyze the problem. The only items you can mask are usernames, passwords, email addresses, domain names and public IP addresses.
To save some time on solving your problem I recommend you reboot your router.
Re: Two RB's linked on the same network by mistake
Posted: Fri Jun 22, 2018 6:15 pm
by lmarmisa
floripaolo wrote: ↑Fri Jun 22, 2018 1:29 pm
I can't see anything unusual.
I agree.
Do your RPis work properly?.
Re: Two RB's linked on the same network by mistake
Posted: Sun Jun 24, 2018 7:12 am
by floripaolo
Problem solved. Restarting the router solved the problem (for now). Sorry bothering you...