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IvanMadzharov
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Joined: Thu Apr 27, 2017 4:16 pm

Networking Problem

Thu Apr 27, 2017 4:43 pm

We have Routerboard 750GL.
The running services on it are
Routing/NAT
DNS
DHCP
We facing problems with the obtained network settings especially with the network connectivity to Gateway (router)
We have old systems with Windows XP and new as Windows 7, Windows 8.1 and Windows 10
All above windows systems obtained successfully the network settings
as IP addresses from network 192.168.0.0/24
SM 255.255.255.0
GW 192.168.0.10
DNS 192.168.0.10
But all Windows 7, Windows 8.1. and Windows 10 haven't Internet connectivity and ping to 192.168.0.10
The ping to 192.168.0.10 (GW-Mikrotik 750GL) from Windows 7,8, and 10 is unsuccessful - failed.
The ping command to 192.168.0.10 from Windows XP is successfully every time.
The ping to all other devices from 192.168.0.0 network is successful.
Where can be the problem. The difference in only the version of Windows
Thank you in advance !

P.S. The ICMP ping is not forbidden in the Router settings
 
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RyanStevens
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Re: Networking Problem

Fri Apr 28, 2017 1:56 pm

I'm also facing the Networking Problem. Don't know what is the problem and don't know how can I check is it a router problem or IP problem. What can I do any suggestion?
 
tangram
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Re: Networking Problem

Thu May 04, 2017 1:23 pm

Try ping clients from mikrotik with source ip 192.168.0.10, check ip arp table and if possible post configuration.
 
tholderbaum
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Re: Networking Problem

Thu May 04, 2017 7:23 pm

Remember to disable the windows firewall.
 
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ZeroByte
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Re: Networking Problem

Thu May 04, 2017 7:30 pm

Whichever interface has the IP address 192.168.0.10/24 configured, make sure that it has ARP = enabled.
(this is the default but if you disabled it for some reason, then that would cause this behavior)

Also, check that your switch configuration and/or bridge configurations aren't getting in the way somehow. (especially bridge firewall rules if you've created any)

As others have stated, check the ARP tables on the router and on the client PCs to make sure that both sides are at least learning the correct MAC addresses for each IP address.

Silly question though - can the client devices ping each other? If no, and the windows firewall is disabled, then you're having a layer-2 issue or else faulty wiring.

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