We have laptop installed with two NIC (WLAN and LAN) which connects to different networks. so it has two different IPs.
In this condition, If we perform SNMP broadcast discovery(using 255.255.255.255) to identify the SNMP compliant devices. We get only the device listed in WLAN and LAN interface IP ranges are not detected.
How can I get all the SNMP-compliant devices connected in the WLAN and also LAN network through SNMP broadcast discovery(using 255.255.255.255) ?
Thank you
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When I'm connected via cable to the building's network socket I can see all other computers in the network.
Now I introduced a router and can only see computers in the router's sub-network. Is there something I can do to be able to see other computers in the network to which now router is directly connected?
I disabled firewall on the router.
Cheers
Router is a Layer 3 device for routing network traffic between networks. But not broadcast by default. So you can see only PCs in your subnet. Because broadcast is allowed. So you have to find a solution how to allow the broadcast traffic in your router. If it not possible you can't get what you want by simple solution.
I have set up an ad hoc network between two laptops. One of the laptops is connected directly to the Raspberry Pi via Ethernet. This laptop can ping and SSH into the Raspberry Pi just fine. How do I get the second laptop to be able to ping the Raspberry Pi?
The IP of the Raspberry Pi is 192.168.137.99, the Ethernet ipv4 address of the laptop connected to the Pi is 192.168.137.1, and I have set the address of the Wireless LAN adapter Wi-fi on the second laptop as 192.168.137.2. The second laptop can ping 192.168.137.1, but not 192.168.137.99 (destination host unreachable). The first laptop (192.168.137.1) cannot ping 192.168.137.2, it says destination host unreachable. The subnet masks are all 255.255.255.0. I am pretty new to this so any advice is appreciated.
Usually people use routers for that. Get a home router, ensure it has DHCP server on, connect all 3 devices to the router however you want (with cable or wifi), setup the devices to use automatic IP address, they’ll get 3 IP addresses from the router’s DHCP server, and you’ll be able to ping them however you want.
If you don’t have a router or don’t want to use it, there’s another option. You can setup the laptop that has Pi connected to act as a network bridge. Here’s how. This way this laptop will route these IP packets between your 2 network (one Ethernet with the Pi, another one WiFi with your second laptop). Because it will be no DHCP server on your network, you’ll have to setup IP addresses manually. Make sure all 3 devices use different IP addresses from the same subnet, 192.168.137.* with mask 255.255.255.0 should work just fine.
I am developing an application in which device discovery in a network is required. I am using UDPAnySourceMulticastClient in windows phone 7 for discovering desktop clients. Whenever I connect desktop to a D-link or wi-fi connector, I am able to discover desktop in my wp7.
But my problem arises when I connect desktop through ethernet to some network and connect wp7 to the same network that desktop is using I am not able to discover desktops(Even though I am sending message to the group). Is it UDPAnySourceMulticastClient works only if both are connected through wi-fi network?
Thanks in advance
UDP multicast is dependent upon the hardware used to make the network (routers, etc.) to rebroadcast the message to all other clients. While more complex scenarios are possible, it's unusual for multicast to be enabled for anything other than communications connected to the same wireless hub.
I have a laptop with only one Ethernet port and I connect to the internet through it using DHCP to get my IP. I also have a LAN which needs to connect to the Internet. The ONLY way to achieve this is using the laptop's Ethernet port.
I created an alias for en0 and allowed me to connect to the LAN.
The problem would be how to share the Internet using the same Ethernet port from the DHCP IP(which I set up using the Network Settings) to the alias(different IP) for the LAN. Again both IPs are on the same physical interface.
Thanks
You would have to set up a separate IP network space, add a secondary address to your ethernet interface, and run natd on your laptop to translate and route between the networks.
(of course putting all your other devices on the secondary network).
How to real time convert wireless packet(802.11) to Ethernet packet(802.3) in windows?
I'm receive wireless packet with Wireless Lan.
I want forward this packet to Ethernet.
Can i do this work?
You're trying to do network bridging. Windows has this support built in starting with XP. This will make your computer into a very expensive two port Ethernet switch (where the wireless link is a port).
If you want to do some more fancy filtering, I suggest using a TUN/TAP driver or pcap/WinPCAP, which will allow you to receive raw frames.