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  1.                                                                                 
  2. PRINT SELECTION FOR APAR - II06579 93/04/27                                     
  3.            PIN INFO-PC-LIB-104 II06579-MS-MESSAGE                               
  4. F   -     -     -                                                               
  5. CM PROBLEMS IN THE AREA OF LAN PROTOCOL AND ADAPTER SUPPORT OR                  
  6. LAN TRANSPORT ( LAPS )                                                          
  7. END OF ABSTRACT   FESN5NFO000-000                                               
  8. REPORTED RELEASE    R001                                                        
  9. ERROR DESCRIPTION:                                                              
  10.                                                                                 
  11. +-------------------------------------------------------------+                 
  12. |II06579                                                      |                 
  13. |          Communications Manager Information APAR            |                 
  14. |                                                             |                 
  15. |                           ES/1                              |                 
  16. |                                                             |                 
  17. |          CM problems in the area of Lan Protocol and        |                 
  18. |          Adapter support or Lan Transport ( LAPS )          |                 
  19. |                                                             |                 
  20. |                                                             |                 
  21. |LAST UPDATE:  02/03/93                          BY: GMB      |                 
  22. |                                                             |                 
  23. |Purpose:  This information APAR provides information on      |                 
  24. |          CM problems in the area of Lan Protocol and        |                 
  25. |          Adapter Support or Lan Transport                   |                 
  26. |                                                             |                 
  27. +-------------------------------------------------------------+                 
  28. |                                                                               
  29. |  Overview.                                                                    
  30. |                                                                               
  31. |      1. Frequent problems                                                     
  32. |      2. Duplicate address test at initialization                              
  33. |      3. References                                                            
  34. |                                                                               
  35. |                                                                               
  36. +-------------------------------------------------------------+                 
  37. |      1. Frequent problems                                                     
  38. +-------------------------------------------------------------+                 
  39. |                                                                               
  40. |12/08/92                                                                       
  41. |Problem: - Communications Manager will not load                                
  42. |           Token-Ring driver                                                   
  43. |         - Message: ACS0111  (CM message: Main CM Menu)                        
  44. |                    LT00050  (Lan Transport: in LANTRAN.LOG)                   
  45. |         - Error: Type 0017 00000002 ALERT 3EF789B7                            
  46. |         - Duplicate address appears to be returned by the                     
  47. |           network, although there is not a duplicate address.                 
  48. |           this is caused by a device (S/W or H/W)                             
  49. |           probably echoing back the address.                                  
  50. |         - A duplicate address is present on the ring.                         
  51. |                                                                               
  52. |Solution: Resolve the duplicate address.                                       
  53. |                                                                               
  54. |Suggestions:                                                                   
  55. |         1. Change the T/R address to insure it is unique.                     
  56. |         2. Find the duplicate address:                                        
  57. |            -ask the IBM Account Team to use OS2PING from the                  
  58. |             IBM tools disks or                                                
  59. |            -use a LAN manager program to query the adapter                    
  60. |             address or                                                        
  61. |            -use a sniffer trace                                               
  62. |         3. Try adding "NETFLAGS = 0x0100" after the link                      
  63. |            statement in the PROTOCOL.INI file. The NETFLAGS                   
  64. |            parameter is a circumvention until the S/W or H/W                  
  65. |            that is incorrectly echoing or incorrectly                         
  66. |            sending a duplicate address can be identified                      
  67. |            and corrected.  After the S/W or H/W (bridge,                      
  68. |            router, etc.) is found and corrected, then                         
  69. |            the parameter should be removed to allow Lan                       
  70. |            Transport to continue checking for the error of                    
  71. |            a duplicate address.                                               
  72. |                                                                               
  73. |01/29/93                                                                       
  74. |Problem: - Communications Manager gets TRAP 000D Indicating                    
  75. |           the PROTMAN$ driver as originator                                   
  76. |         - Message: TRAP 000D ORIGINATOR: PROTMAN$                             
  77. |                                                                               
  78. |         - If the  TOKEN  entry found under the MAC SECTION                    
  79. |           DEFINITION of the PROTOCOL.INI file is BLANK or                     
  80. |           contains a NULL a TRAP 000D will occur.                             
  81. |           (EVEN IF THE  TOKEN ENTRY  IS NOT BEING USED)                       
  82. |SOLUTION:                                                                      
  83. |         1. Add a value on the line below the  TOKEN  entry                    
  84. |            found under the MAC SECTION DEFINITION.                            
  85. |            EG.                                                                
  86. |                                                                               
  87. |----------------- MAC SECTION -------------------------------*                 
  88. |-------------------------------------------------------------*                 
  89. |                                                                               
  90. |  TOKEN                                                                        
  91. |  TOKEN$                                                                       
  92. |                                                                               
  93. +-------------------------------------------------------------+                 
  94. |      2. Duplicate address test at initialization                              
  95. +-------------------------------------------------------------+                 
  96. |12/17/92                                                                       
  97. |                                                                               
  98. | There are 3 XID frames sent out at initialization time                        
  99. | requesting a response by any adapter having the same                          
  100. | address as the local adapter.  If another adapter has this                    
  101. | address as well, it will respond by sending its own XID frame.                
  102. |                                                                               
  103. | This test for LANDD.OS2 (CM ES 1.0 LAPS) will cross                           
  104. | all bridges in the network, unlike LANDD.SYS (CM EE 1.3)                      
  105. | which tests only locally.                                                     
  106. |                                                                               
  107. | There is a wait period of 1.5 seconds for the                                 
  108. | responses to arrive.  After this time, if more than                           
  109. | the original 3 XID frames for this address have been                          
  110. | received, then the assumption is made that a                                  
  111. | duplicate address has been detected.  In some cases,                          
  112. | a bridge in diagnostic mode, or one not functioning                           
  113. | properly will echo these XID frames back to the                               
  114. | network causing extra frames to arrive at the                                 
  115. | initializing adapter, and a false indication of a duplicate                   
  116. | address will occur.                                                           
  117. |                                                                               
  118. | NETBIOS does not have a similar test, which can cause                         
  119. | failures later if a duplicate address exists on the network.                  
  120. |                                                                               
  121. +-------------------------------------------------------------+                 
  122. |    3. REFERENCES                                                              
  123. +-------------------------------------------------------------+                 
  124. | 12/17/92                                                                      
  125. | Extended Services for OS/2 CM Tuning Guide for LAN Adapter                    
  126. | and Protocol Support (LAPS) Feature GG66-3243                                 
  127. |                                                                               
  128. +-------------------------------------------------------------+                 
  129. |                                                             |                 
  130. |KEYWORDS: CMINFO 562121301 R100  CM                          |                 
  131. |          LT00050  LAPS TRAP000D TRAP 000D DUPLICATE ADDRESS |                 
  132. |          ACS0111                                            |                 
  133. |                                                             |                 
  134. |                                                             |                 
  135. +-------------------------------------------------------------+                 
  136.                                                                                 
  137. COMMENTS:                                                                       
  138. SEE ERROR DESCRIPTION FOR INFORMATION                                           
  139. CIRCUMVENTION:                                                                  
  140. REPINNED 93/02/08 RALFS/ATD                                                     
  141. 93/02/08,UNKNOWN                                                                
  142.                                                                                 
  143.