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When I first boot my laptop with a wireless connection, it is not accessible to other local computers using ssh or ping.
However, if the same laptop boots with an ethernet connection, ssh and ping work correctly.
In both cases, the laptop can access the WAN.
I can only access the wireless laptop if I issue an arp command:
arp -s 192.168.1.5 AA:BB:CC:dd:EE:FF
After that, ssh and ping work as expected.
What could be preventing the wireless interface from broadcasting its MAC address?
Hi ckrosco. Welcome to the forums ):P
My first guess would be to check your router:
- Are the wired network and wireless network in the same IP range?
- Does the laptop has set an static IP or a DHCP reservation using its ethernet MAC?
Then, from the other computers:
- Does the laptop appear with another MAC on the arp table (arp -v), or it does not appear at all?
Regards.
Yes, all devices are within 192.168.1.1 - 192.168.1.10Quote:
Originally Posted by papibe
Laptop has a static IP - 192.168.1.5. I use the same IP address for both the wired and wireless laptop connection, which automatically switches depending on whether there's a cable attached.Quote:
Does the laptop has set an static IP or a DHCP reservation using its ethernet MAC?
The laptop does not appear in the arp table until I do a PING (which does not respond), then I see:Quote:
Does the laptop appear with another MAC on the arp table (arp -v), or it does not appear at all?
Here is the ifconfig from the laptop:Code:arp -v
Address HWtype HWaddress Flags Mask Iface
laptop (incomplete) eth0
I used the HWaddr from eth1 in my arp commandCode:ifconfig
eth0 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:42 Base address:0xc000
eth1 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::226:82ff:fe94:4817/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1161632 errors:116 dropped:0 overruns:0 frame:522662
TX packets:795356 errors:77 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1688142507 (1.6 GB) TX bytes:65040986 (65.0 MB)
Interrupt:17
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:432 errors:0 dropped:0 overruns:0 frame:0
TX packets:432 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34553 (34.5 KB) TX bytes:34553 (34.5 KB)
arp -s 192.168.1.5 AA:BB:CC:dd:EE:FF
to gain access to the laptop, but without that manual entry into the arp table, I can't connect to the laptop.
Thanks.
Is that the static IP defined on the router or the laptop itself?
Is your router your DHCP server?
Regards.
Thanks for your speedy replies.Quote:
Originally Posted by papibe
I've turned DHCP off. The ADSL modem has a setting to reserve IP addresses, but I think it's not necessary. But I have the laptop IP address set there.
I have a ADSL modem connected to a switch, which is connected to a wireless router as a WAP. Should the wireless router have a setting for the laptop IP address?
I believe the definition for the laptop IP address comes from the laptop itself, using the network manager GUI.
The laptop /etc/network/interface file has this:
Although in trying to sort out this problem I also tried this:Code:auto lo
iface lo inet loopback
Which didn't improve things, so I deleted that section.Code:auto eth1
iface eth1 inet static
address 192.168.1.5
netmask 255.255.255.0
broadcast 192.168.1.255
gateway 192.168.1.1
dns-nameservers 8.8.8.8 192.168.1.1