LAN Connected but no ping to router

[Wattoo]

Hello,
I'm trying to connect to my LAN router. After I plug-in the LAN Cable and manually set my IP, Subnet Mask, Router and DNS Server address, ethernet says it is Connected (Screenshot Below). However; when I try to ping the router through terminal, it says:

Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
Request timeout for icmp_seq 5
ping: sendto: Host is down

3 other systems are connected to the same router with same configuration (with different IP obviously) and the router is returning their ping. Which means the router is NOT configured for a No Ping.

This all started after I installed speedify for merging LAN & Wifi networks (Which I deleted/uninstalled afterwards). Before installing speedify, everything was working fine with the same machine and same router.

I have already tried deleting the ethernet, creating a new ethernet etc. Also used the following command sudo ifconfig en0 down, sudo ifconfig en0 up.

I'm using macOS Catalina 10.15 on a Macbook Pro mid 2012.

 

[Romain_H]

Subnet 255.255.0.0 correct?

 

[Wattoo]

Subnet 255.255.0.0 correct?

also tried 255.255.255.0

 

[monokakata]

Have you tried another cable? I was helping a friend remotely troubleshoot a connection issue a few months ago. We went through everything, nothing worked, and then finally he tried another cable...bingo.

It's a possibility, at least. Swap with one of the cables from the working machines.

 

[bobcomer]

Make sure nothing else has the same IP address.

 

[Romain_H]

also tried 255.255.255.0

Wht‘s the subnet mask lf the router? Must be the same

 

[svenmany]

I think you might want to contact Speedify support.

My understanding is that the exact configuration that is failing to work now was in place before you installed Speedify, and that configuration was working fine. Now, after uninstalling Speedify, the configuration no longer works (in that you can't ping your gateway router).

Speedify likely played with your machines routing table to bond the two interfaces. Perhaps some configuration was left in place even after uninstalling Speedify.

 

[R2K2]

Have you tried creating a new network location? And is there a specific reason why your are not using DHCP on your network?

 

[Wattoo]

I think you might want to contact Speedify support.

My understanding is that the exact configuration that is failing to work now was in place before you installed Speedify, and that configuration was working fine. Now, after uninstalling Speedify, the configuration no longer works (in that you can't ping your gateway router).

Speedify likely played with your machines routing table to bond the two interfaces. Perhaps some configuration was left in place even after uninstalling Speedify.

That’s what I was thinking. Some configuration was left in place even after uninstallation. Million dollar question is What was left and how to rectify

 

[Wattoo]

Have you tried creating a new network location? And is there a specific reason why your are not using DHCP on your network?

Yes, I deleted the ethernet and then re-created it. Secondly, as all other systems on the network are using manual configurations, I also did the same.

 

[svenmany]

I assume you rebooted after uninstalling Speedify.

I realize you might not want to post it here, for privacy sake, but I do wonder what your routes look like:

netstat -rn -f inet

If you see something strange there, then that would be information to provide to Speedify if asking for help. You might see your default route (the gateway) on some obsolete interface that should have been removed when uninstalling Speedify. (I'm really an amateur here.)