SMC-D VLAN connectivity issues

Internal shared memory (ISM) processing does not require network switches. However, VLANs are supported over ISM devices to allow for separation of traffic. The OSD or HiperSockets™ VLAN attributes propagate to the associated ISM interfaces that use the same physical network ID (PNetID).

No additional HCD definition is required to identify VLANID values that an ISM device can use. During activation processing, VTAM® registers with the ISM device the VLANIDs that the ISM interfaces use.

If you are using VLANs, ensure the compatibility of VLANID values on the OSD or HiperSockets interfaces that are used to establish the TCP connection. If a mismatch between VLANID values occurs, the SMCReason field of the Netstat ALL/-A report indicates 00005806 – VLAN ID NOT FOUND.

For more information about configuring VLANs Start of change with SMC-D End of change , see VLANID considerations in z/OS Communications Server: IP Configuration Guide.