I had connect my laptop and phone under a same router/modem.
But the IP addresses that shown on my laptop and phone are different, why???
I'm quite newbie for it, please help me
IP addresses are different inside your network. When you send data outside the network your router uses NAT (Network Address Translation) to assign your Internal(LAN) address your External(WAN) address for the duration of that communication. If they had the same Internal IP address then you would have an error like this http://compnetworking.about.com/od/workingwithipaddresses/f/ip_conflict.htm
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I've logged in to my router's console to check a small internet problem.
And accidently noticed a strange ip connected to the wireless network which is 169.254.70.177 (the rest were all on the 192.168.1.0/24),
I looked that ip up on whois and got nothing, result was that 'this ip is unroutable'.
What does that mean ? and why possibly would be seeing this strange ip on my local network ?
This ip was appearing as connected to the router via wireless network, a few seconds later it appeared as connected via ethernet.
Can someone please explain what could this possibly happen ?
The 169.254.0.0/16 address range is the "zeroconf" range that many devices fall back to when no local address is configured and DHCP fails.
It's a link-local address, meaning that devices can only communicate within the local layer 2 segment. These addresses are not routed.
The device in question is probably set up for DHCP but failing that (filtered, exhausted pool, ...) has fallen back to zeroconf. Another possibility is a stray packet that the device has sent out on the wrong interface.
Using packet capturing, you should be able to find out the device's MAC address and be able to locate it.
The 192.168.X.X Ip's are the ones being assigned by your router, they are private network reserved addresses. The other address you see is probably your router's connection to the WAN
I am trying to get IP address of Android Phone and it shows something like 192.168.0.0.But i need some thing like 10.0.2.0.Are both same?.Can anyone tell me what is the difference and How to get that address?
Thank you
Are you using AVD?
The AVD receives its network address and configuration on the private network from a DHCP server that is integrated into Virtual. The address which the virtual Device receives is usually on a completely different network to the host. As more than one card of a virtual device can be set up to use NAT networking, the first card is connected to the private network 10.0.2.0, the second card to the network 10.0.3.0 and so on.
It is highly unlikely that you have an IP with a 0 at the end because they are mostly used as the Network ID, especially with the 192.168.0.0 adress. The 10.0.2.0 and the 192.168.0.0 Adress are both IP Adresses that are in the private Range, so they are not public. I assume that you get your IP via DHCP so it depends on that DHCP Server what IP you will get. In the end of the day it doesn't really matter if you have an 10.0.xx.xx or a 192.168.0.xx Adress. Maybe I could help you a little more if you tell me why you need a 10.0.2.0 adress?
10.0.0.2 is an IP address found on many local computer networks, particularly business networks.Internet Protocol (IP) version 4 defines certain sets of IP addresses as restricted for private use (not available to be assigned to Web servers or other Internet hosts).
I've determined that the DHCP range of my access point is 192.165.. but when I connect with my Ralink wireless card to the Access Point it receives an IP address of 169.254.178.92.
What is going wrong with the connection process?
169.254.*.* is a Local-Link Address. It is a pseudo-random IP address assigned by the OS when it is unable to obtain an IP address via DHCP on the network. This allows for an unconfigured network to still allow communication between devices because each devices picks a random address and then broadcasts to find out what other devices are also on the local network segment.
In short, something is wrong with the DHCP server on your network such that it is not serving addresses to your wireless clients.
I'm learning about IP addressing, and I'm still a bit confused. I know that an IP address consists of a network and host ID. To test this in the real world, I googled "what is my IP address" on my tablet and smartphone, both connected to my home wireless network and I got the same IP address. Shouldn't they be different since they are two different hosts? I suspect this has to do with public and private IP addresses, but then, my bigger question is how does data really get to my individual device?
To the outside "internet", your IP address is just the IP of your router, provided by your ISP. Within your home network, you have a set of private addresses assigned by your router. The way that programs know to communicate with the correct device is usually through a custom reply-to port that the router re-assigns to packets from each device. This is called NAT.
For example, if you are browsing on port 80 from your tablet and your laptop at the same time, your reply-to port may be set to 3245 for the tablet and 3246 for the laptop. When the router receives a packet going from port 80 to port 3245, it changes 3245 to 80 and sends it to your tablet. If the port is 3246, it sends it to your laptop instead. The key point here is that the website you are communicating only knows the IP of your home router. As far as those sites are concerned, there are no other devices.
To test this in the real world, I googled "what is my IP address" on my tablet and smartphone, both connected to my home wireless network and I got the same IP address. Shouldn't they be different since they are two different hosts?
No, because of NAT.
I suspect this has to do with public and private IP addresses, but then, my bigger question is how does data really get to my individual device?
Thanks to NAT.
Working on Cisco ASA 5510 device I tried to use the broadcast IP address of a Public Network for NAT Static configuration and IOS allowed me to do it, but from outside it didn't work. After a while I changed the broadcast IP to an usable IP and it started to work.
I understand that on a physical interface we can't configured a broadcast IP address, but for NAT we have to do it, otherwise we loose many Public IP addresses from networks with /29 prefix.
I understand you need to squeeze one more IP address for you to use, however most routers don't support forwarding broadcast traffic, for a simple fact, if that is allowed, anyone can send a ping to someone's broadcast address and every host in that subnet has to reply, that is not acceptable.
Other Internet routers may not tell that IP address is broadcast or not, but think about your ISP router for your access circuit, it has to know that IP address is a broadcast, it has to know your ip range in order to set it up. And when someone send you a ping, the router will say: hey, that is a broadcast address on my client's interface, first thing I know as a router, I must not forward a broadcast, thus drop it.
Hope it helps.