Windows – Some machines can’t ping CentOS server

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I have a CentOS 5 server. I have 20 computers. All of them are plugged into same switch running Windows XP. I can ping from 14 of them, but 6 won't ping the server. I checked the 6 that won't ping the server and there is no firewall. The server's IP address is 192.168.1.2. I can ping the gateway which is 192.168.1.1 from those computers, but I can't ping the server. My iptables are turned off. Any help will be appreciated.

Best Answer

Exchange ip address of a non-ping pc with a ok-ping pc. So you can know if the problem is into workstation or into server.

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Windows – Can’t ping some IP addresses in the same subnet (LAN) Windows 2011 Server

Check to see that you don't have DHCP running on the "gateway" and on the server. Also, check your DHCP on the server and make sure it is giving out 192.168.1.1 as teh default gateway. Generally, SBS wants to be the router so it will give out itself as the gateway address. "ipconfig /all" on a workstation should give you the IP of the DHCP server as well as the default gateway. Also, make sure it isn't a DNS issue. the gateway might be giving out public DNS servers which won't respond correctly to local domain names. so when you go to ping using the hostname, it will respond with the wrong IP or no IP at all.

CentOS, two nics eth0 eth1 with different subnets aren’t reachable outside VLAN/subnet

You need to create a multipath route or active a dynamic routing protocol (ospf, isis).

Mulitpath example:

ip route del default via 192.168.1.1 dev eth0
ip route add default scope global nexthop via 192.168.1.1 dev eth0 weight 1 \
        nexthop via 192.168.2.1 dev eth1 weight 1

Best Answer

Related Solutions

Windows – Can’t ping some IP addresses in the same subnet (LAN) Windows 2011 Server

CentOS, two nics eth0 eth1 with different subnets aren’t reachable outside VLAN/subnet

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