Android device is not able to ping my laptop on same network

-1

It's unlikely they're on the same Subnet.

A Subnet is separated from another Subnet by a router. The fact that they have different default gateways would indicate they're possibly on different Subnets. You could confirm this by looking at the Subnet mask each device has.

If both devices have their Subnet mask set to 255.255.0.0 then they will be on the same subnet (there are other masks that would also put them in the same Subnet).

Looking at the IP information you have provided, there's a good chance that both devices will have the following Subnet mask: 255.255.255.0. This Subnet mask means that they would be on different Subnets.

Being on different Subnets means that they will only be able to communicate with each other providing that each router has learnt or been manually given a route to the other network.

Even with routes to each other, there can still be various reasons why a ping will not work. As an example, the ICMP echo (ping) could be blocked on a network switches' ACL (Access Control List). This means that your devices could communicate with each other in all other aspects, just cannot ping each other.

If your phone has the feature, then a way you could do this is to create a hotspot on your phone. Connect the laptop to the hotspot and they will then be on the same network and you should find they will be able to ping each other.

Jamie Cole

Posted 2013-10-31T17:27:30.560

Reputation: 34

2No, by definition a local area network is a network that spans a local area. It has nothing to do with routers. – qasdfdsaq – 2015-11-04T13:40:11.657

Ok, I've re-phrased the comment. However it has everything to do with routers. The two devices have different ROUTERS set as their Gateways. This would make it very likely that the two devices are on different networks and unable to ping unless the ROUTERS had known routes for each other. – Jamie Cole – 2015-11-04T13:49:15.043

Router != network. – qasdfdsaq – 2015-11-04T13:50:11.543

unless the ROUTERS had known routes is the key part here. I can ping many servers on the Internet just fine and they are certainly connected to different routers. Might want to stress the routing and default gateway part. And maybe add that sometimes all ICMP is erroniously blocked for legacy reasons. (link to the ICMP part). – Hennes – 2015-11-04T13:55:04.377

@qasdfdsaq Assuming the IP addresses are assigned by DHCP, would it not seem interesting that both devices are being assigned different Gateways? The most obvious answer to this is that they are on different networks, networks that do not have routes to each other. – Jamie Cole – 2015-11-04T13:57:49.650

Aye. Quite possible. But please mention that explicitly in the answer. As well as 'verifying the subnet mask for each device.'. (How, why. When is all fine? When should they differ) etc etc. – Hennes – 2015-11-04T13:58:26.923

@JamieCole: Nope. Perfectly normal on large networks. – qasdfdsaq – 2015-11-04T14:01:08.403

@Hennes Good point. Have updated. – Jamie Cole – 2015-11-04T14:08:37.647

Android device is not able to ping my laptop on same network

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