Diagnosing network connectivity problems

Steps for diagnosing problems connecting to a server
Determine the source of the problem in connecting to a server.

Steps for verifying server operation
Determine whether the server is active and is using the correct port.

Steps for verifying IP routing to a destination when not using policy-based routing
Verify a route to a particular destination IP address when you are not using policy-based routing (PBR).

Steps for verifying network access
Determine whether access to a resource is controlled and whether the server or client application can access the resource.

Tools for diagnosing network connectivity problems

Documentation for the IBM Support Center