The team server met an issue that the IP is only available from the local network. After quick check, we found the IP service charge was overdue. However, After recharge the service, the server is still not available from the other campuses.
It seems that the issue comes from IP-MAC binding. Actually, we used a clone MAC due to historical reasons. The solution, after many tests, was use another IP-MAC pair to replace the existing one.
Now we archive some useful commands, given the network settings in use is ‘em2’
#ifconfig show the network status $ifconfig #stop/start the network settings in use $ifdown em2 $ifup em2
Network settings file position
DEVICE=em2 TYPE=Ethernet UUID=4425bdde-016e-40af-dfwerfef-df-we-fsdf- ONBOOT=no NM_CONTROLLED=yes BOOTPROTO=none MACADDR=3C:XX:XX:XX:XX:5A IPADDR=202.XXX.XXX.XXX PREFIX=23 GATEWAY=XXX.XXX.70.1 DNS1=10.X.8.X DNS2=X.8.4.X DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME=106 HWADDR=XX:83:XX:XX:XX:C4 LAST_CONNECT=1431774283