Using Netstat from IBM Navigator for i: Connections

You need to verify the status of your IPv4 and IPv6 connections.

For both IPv4 and IPv6 connections, you should verify the following information:
  • You should have at least one passive listening connection for each of the servers you need to use. A passive listening connection indicates that the connection is ready for work. Passive listening connections are indicated by an asterisk in the Remote Address and Remote Port columns. See the server table for a list of all the servers and their associated jobs and subsystems.
  • The passive listening connections should not be ended. If they have been ended, then remote systems are unable to use the servers represented by the connections.

IPv4 connection status

To display information about the status of your IPv4 connections, follow these steps:

  1. In IBM® Navigator for i, expand IBM i Management > Network > TCP/IP Configuration > IPv4.
  2. Select IPv4 Connections.
  3. If you need to end and restart the passive listening connection, then you should do it by ending and restarting the server. To end and restart a server, follow these steps:
    1. In IBM Navigator for i, expand IBM i Management > Network > Servers.
    2. Select TCP/IP Servers for TCP/IP servers, select User-Defined Servers for user-defined servers, or select IBM i Access Servers for host servers.
    3. Right-click the server you want to end and restart, and select End.
    4. Right-click the server you want to restart, and select Start.

IPv6 connection status

To display information about the status of your IPv6 connections, follow these steps:

  1. In IBM Navigator for i, expand IBM i Management > Network > TCP/IP Configuration > IPv6.
  2. Select IPv6 Connections.
  3. If you need to end and restart the passive listening connection, then you should do it by ending and restarting the server. To end and restart a server, follow these steps:
    1. In IBM Navigator for i, expand IBM i Management > Network > Servers.
    2. Select TCP/IP Servers for TCP/IP servers or select User-Defined Servers for user-defined servers.
    3. Right-click the server you want to end and restart, and select End.
    4. Right-click the server you want to restart, and select Start. IBM provides a limited number of TCP/IP applications that support IPv6.