See this image, Before you go for question Here, 8.0.0.1/8 pinging with 192.168.1.1/24 but 8.0.0.2/5 don't ping with 192.168.1.1/24. Could anyone say me, What actual problem?
8.0.0.1/8 and 8.0.0.2./5 overlap, messing up the routing. Each router interface requires a distinct network address.
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I'm new to ROS, wish someone can answer my stupid question.
I have a static IP 140.113.xxx.xxx, and a 4G dongle with floating IP 192.168.8.100. I want to use ROS to transmit data between them. Can ROS do that? Because I found some website said ROS can only transmit data in the same Internet domain, but I think this must have some trick to solve this problem.
this has nothing to do with ROS.Theses are IPs in two different networks, you either create a propper routing or you give a second device an IP in the same net. However 192.168.x.x should not be used in the internet or any other non private networks
I am person trying to learn networking. I understand that this may not be the best first step to take, but I am eager to try and understand how this takes place because it has been tearing up my mind for quite a while now.
My question is, how does a network recognize a device and automatically connect it to the network?(This is assuming, of course, that you have connected to the network previously and are connecting wirelessly.)
Does it store it on the routers side and then look for specific MAC Addresses and then connect it? Or is it stored somewhere on an encrypted file on your computer? Or is it none of these? Please forgive me if I am way off, I am only giving guesses from what I have so-far learned from networking.
'Connect it to the network' doesn't really mean anything, other than just plugging it in, or turning it on in the case of Wifi. What really happens is that the device broadcasts a DHCP request for an IP address, or else It already has an IP address in that subnet. From that point on it is discoverable by ARP, so other hosts in the subnet can send to it.
I have two nic in my Linux and I want to run some loopback test (packets sent out from one nic and received from the other). I have extra switch and/or router available but I don't want to use fancy features such as source NAT.
It seems easy at the first glance but I have tried to put the two nic in the same subnet and in different subnets with static routes. But none of them worked.
This is a quite common scenario but I can't find any working solution online. Can anyone help? Thanks
I think you can use network namespace to solve the problem
Not sure if I should ask this question here, but this is a technology community so why not.
I'm running a local network which is setup like this:
Modem -> Access Point -> Switch -> Server/5 other computers
and my problem is the 5 other computers only two computers can have access to the internet (which are connected though Ethernet).
Also, any device that's connected to my wireless network can't access the internet either.
I know it's not a problem from my ISP since two computers are connected to the internet. And I know it's not a wireless problem since my local server can be reached though the access point.
I'm not sure what is the problem since I replaced all the cables, devices, and done tons of resets.
Appreciate your help, or direction to where I can get help.
Thanks all, but my problem was that I used static IP and didn't assign more than three, two computers and a printer. completely a beginner's mistake.
I don't know if you are familiar with computer networks but I think it's a network problem. Maybe your router (modem) can provide only two IPs and that's why only two computers can connect the internet. To verify this you can check what is your IP, and what is your Subnet Mask. Type ipconfig in your cmd and give me your IP and the subnet mask to check if this is the problem or not.
I'm wondering if two nodes on same network/sub-network can have same ip addresses?
Now i know that by definiton ip addresses are unique and that's how nodes are identified on network layer but i got this question in a quiz paper so is that possible anyhow?
For eg if i am on a private network and then if try to set same ip addresses for two different nodes it gives IP adress conflict but answer was YES in that quiz for this question.So if anybody can suggest any possible reason,it would be deeply appreciated.
Please let me know if it's not possible.
they can, but they must not.
If the client know or cache the mac address , it can comunicate with one node
but the next arp request can change the mac address and continue with the other.
It can send udp message to the wrong node , but broke tcp connections.