customer demand
客户要求更换一个新的IP做测试，并且要保留旧IP。Problem Description
This operation is to host virtual machines. Due to lack of experience, without first checking the host of the network card information, but directly check card virtual machines, resulting in unsuccessful in this operation.
When carrying out the operation, the first thought is, add a new NIC, new IP configuration on the new card, lanscan found to have two network cards on the host, lan0 and lan1, lan1 has not yet been used. Then configure the new ip on lan1. As a result, after the completion of the network card configuration found that the ip ping nowhere.
Profiles amended as follows:
Start Troubleshooting
1, first check the configuration files (no problem).
2, I think of the question of whether the host card terms. (Indeed host NIC)
the hpvmnet view card information on the host:
The original IP vswitch901 this card is the host of the network's 95, I'm 94 with a segment, of course, unreasonable myself.
3, after the problem was found, the correct start modifying, steps are as follows:
1) Modify /etc/rc.config.d/netconf configuration file, to the IP network segment 95. 
2) modify the / etc / hosts file configuration 
3) Network Service Restart
/sbin/init.d/net STOP
/sbin/init.d/net Start
. 4, after completion of the operation, IP will pass.
Alas, it is less than white experience! A good memory as bad written, this record it.