Symptom
The NM_ETH port of an NE is directly connected to the PC through a network cable. No anomaly occurs before the NE IP is modified. After the NE IP is modified, the PC cannot reach the NE. This anomaly occurs on two sites.
Cause analysis
This problem may lies in the NE or PC. The physical connection between them, however, is fine. Then, it is suspected that the anomaly lies in the IP communication or SCC board.
The R&D confirms that the SCC board is fine. Then, checking on the PC shows that the PC has three IP addresses, 129.9.0.200, 192.169.0.200, and 10.1.68.200. This may be the cause why the anomaly occurs.
Procedure
1. Refresh the network connection of computer
a) On the PC, right-click Network Neighborhood and choose Properties.
b) Double-click Local Area Connection for the connection.
c) Choose Support and click Repair. When the repair is complete, record the IP address.
2. Configure only one IP address.
a) Choose Control Panel in Start menu, and then double-click Network Connection.
b) Right-click which the network connection to be set in Network Connection field, and then choose Properties from the short cut menu.
c) In the Components checked are used by this connection field, click Internet Protocol (TCP/IP), and then click Properties.
d) In the Internet Protocol (TCP/IP) field, click General tab. Click Advanced.
e) In the Advanced TCP/IP Setting field, click IP Setting tab, delete all the IP address except the one recorded.
3. After the configuration, the PC can reach the NE. The problem is solved.
