Ending TCP/IP Interfaces

depends mainly on machine use and the size of the processor. To determine whether the interface has started, view the messages in the QTCPIP job log and the QSYSOPR message queue.

The ENDTCPIFC (End TCP/IP Interface) command ends an existing TCP/IP interface immediately. As a result, all TCP/IP connections using this interface also end immediately. However, the operation of any other TCP or IP over SNA interface, using the same line description as the interface that is ending, is not affected.

TCP/IP interfaces can be ended in one of two ways:

vUsing the Work with TCP/IP Interface Status display, which is reached by:

–Option 1 on the Configure TCP/IP (CFGTCP) menu

–Option 1 on the Network Status (NETSTAT or WRKTCPSTS) menu

vUsing the ENDTCPIFC (End TCP/IP Interface) command

To end a TCP/IP interface from the Work with TCP/IP Interface Status menu:

1.Type 10 in the option field for each interface that you want to end.

2.Press the Enter key.

To end a TCP/IP interface using the ENDTCPIFC command:

1.Type ENDTCPIFC on the command line.

2.Press F4 (Prompt).

3.Type the Internet address of the interface that you want to end.

4.Press the Enter key.

Option 10 on the Work with TCP/IP Interface Status display is used to end both TCP/IP interfaces and IP over SNA interfaces. For information about ending IP over SNA interfaces, see the ENDIPSIFC (End IP over SNA Interface) command in Control Languages (http://publib.boulder.ibm.com/pubs/html/as400/v5r1/ic2924/info/rbam6/ rbam6clmain.htm) in the Information Center. If you are using the Supplemental Manuals CD, then switch to the iSeries Information Center CD to access this information.

Route-to-Interface Binding: Interfaces define direct paths to networks or subnetworks to which an iSeries server is directly attached. Routes define indirect paths. A route identifies the first hop on the path to a network or subnetwork to which an iSeries is not directly attached.

Routes are bound to interfaces through the use of a best-match-first algorithm. This algorithm is based on the state of the interface, and on the type of service (TOS) specified for the route and interface. When you end an interface, the routes associated with the interface can move to another existing active interface if the following conditions are satisfied:

vIf the TOS for the route is something other than *NORMAL, the algorithm looks for an interface with the same TOS. If an interface with the specified TOS is not found, an interface with TOS *NORMAL is sought. Again, if one is not found, that route will not be moved.

vThe MTU value for the route that is being moved must be less than or equal to the MTU value for the active interface.

36OS/400 TCP/IP Configuration and Reference V5R1