SNA 802.2 Connection Icon Indicates Incorrect Network Type

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Each SNA Server connection name is preceded by an icon that indicates what type of connection it is. 802.2 connections are shown with one of the following icon types:

   Icon Type      802.2 Connection
   -------------------------------
   Icon           Network Type

   Ring           Token Ring

   T-shaped Tap   Ethernet, FDDI
				

Note 802.2 connections over FDDI will show up as Ethernet connections. The following two scenarios can lead to SNA Server Admin or Manager displaying the wrong icon for an 802.2 connection.

Incorrect MediaType entry in NT registry

SNA Server Setup reads the MediaType parameter of the installed network adapter from the registry to indicate the media type of the 802.2 link. This value is passed to the SNA Server Admin or Manager program so that it can display the connection icon for the 802.2 connection.

If the MediaType parameter indicates the wrong type of media, SNA Server Admin or Manager will display the wrong 802.2 connection icon. In this case, this is just a cosmetic problem that does not block the functionality of SNA Server.

To work around this problem, use one of the following methods:

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

• Before you run SNA Server Setup to install an 802.2 DLC link service, run REGEDT32 and modify the following registry setting:
  1. Locate the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\AdapterName\Parameters\MediaType key.
     
     Note AdapterName is the name of the Network Adapter that is installed in Microsoft Windows NT.
     
     For example, a single Intel EtherExpress 16 is named "EE161."
  2. Change the value of MediaType so that it reflects the correct Media Type.

              Network      MediaType
              ----------------------
              Ethernet        1
              Token Ring      2
              FDDI            3
     							

     SNA Server Setup correctly detects the media type of the network adapter, and SNA Server Admin or Manager displays the correct icon. If the MediaType is set to "3" for FDDI, the connection will still appear as an Ethernet connection.
• If the SNA Server configuration file already includes an 802.2 connection that shows the incorrect icon, follow these steps:
  1. Delete the 802.2 DLC link service that is using the incorrect MediaType.
  2. Locate the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\AdapterName\Parameters\MediaType key.
     
     Note AdapterName is the name of the Network Adapter that is installed in Windows NT.
     
     For example, a single Intel EtherExpress 16 is named "EE161."
  3. Change the value of MediaType so that it reflects the correct Media Type.

              Network      MediaType
              ----------------------
              Ethernet        1
              Token Ring      2
              FDDI            3
     						

  4. Add a new 802.2 DLC link service.
  5. Configure the existing connection to point to the newly added 802.2 DLC link service.
  6. After you close and reopen SNA Server Admin or Manager, the connection should show the correct network icon.

  Multiple network adapters installed in Windows NT Server

  If SNA Server is installed on a Windows NT Server that has multiple network adapters installed (multi-homed), the 802.2 DLC Link Service that was installed during SNA Server Setup may have been configured to use the wrong adapter. In this case, this may be more than a cosmetic problem. A usual symptom when this problem occurs is that whenever the SNA Server configuration is saved and SNA Server Admin or Manager is restarted, the 802.2 connection with the incorrect icon shows a Link Service of (None) when Connection Properties are viewed. Under ordinary circumstances, the Link Service would show SnaDlc1 (assuming the first 802.2 Link Service that was installed was having the problem).
  
  To correct this problem, follow these steps:
  1. Stop the SNA Server and exit SNA Server Admin or Manager.
  2. Run SNA Server Setup and remove the 802.2 DLC Link Service that is displaying the wrong icon.
     
     Note For SNA Server 3.0 and later, SNA Server Setup does not run to remove link services. The link service is removed by deleting the link service under the Link Service folder in SNA Server Manager.
  3. Exit SNA Server Setup.
  4. Run SNA Server Admin or Manager. A message box appears that indicates that SnaDlc1 (assuming the removed link service is called SnaDlc1) is being removed. Click OK.
  5. After the link service is removed by Admin or Manager, save the configuration. To do this, click Save Configuration on the File menu.
  6. Exit SNA Server Admin or Manager.
  7. Run SNA Server Setup and re-install the 802.2 DLC Link Service. Verify that the correct network adapter is selected for the link service.
     
     Note For SNA Server 3.0 and later, SNA Server Setup does not run to add link services. The link service is added by selecting insert under the Link Service folder in SNA Server Manager.
  8. Exit Setup.
  9. Run SNA Server Admin or Manager.
     
     A new connection is now listed under the SNA Server name that should show the proper icon. You can configure this new connection or you can change the Connection Properties for the existing connection and choose the SnaDlc link service that was just installed. You can delete the connection that you are not going to use.
     
     Note By default, a new connection is not created when you use SNA Server 3.0 and later. The existing connection should be configured to use the link service that is added in step 7.