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Q121619: ARP Cache Commands May Not Work Correctly

Article: Q121619
Product(s): Microsoft Windows NT
Version(s): 3.50
Operating System(s): 
Keyword(s): 
Last Modified: 08-AUG-2001

3.50

WINDOWS

kbnetwork kbbug3.50

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows NT Workstation version 3.5 
- Microsoft Windows NT Server version 3.5 
- Microsoft TCP/IP-32 for Windows for Workgroups, version 3.11 
-------------------------------------------------------------------------------

ARP -D and ARP -S commands may not function correctly under Windows NT 3.5
and Microsoft TCP/IP-32.

Example
-------

To see what's currently in the ARP cache:

  c:>arp -a
  No ARP Entries Found

Attempt to add an entry:

  c:>arp -s 22.101.9.229 08-00-09-12-34-56 22.101.102.207
  The ARP entry addition failed: 3

Check the cache again:

  c:>arp -a
  No ARP Entries Found
  c:>ipconfig

  Windows NT IP Configuration
  Ethernet adapter EE161:

       IP Address. . . . . . . . . : 22.101.102.207
       Subnet Mask . . . . . . . . : 255.255.0.0
       Default Gateway . . . . . . : 22.101.0.1

  Ethernet adapter NdisWan5:

       IP Address. . . . . . . . . : 0.0.0.0
       Subnet Mask . . . . . . . . : 0.0.0.0
       Default Gateway . . . . . . :

  Ethernet adapter NdisWan9:

Attempt to alter an entry:

  c:>arp -s 22.101.9.229 08-00-09-12-34-56

  c:>arp -a

  Interface: 22.101.102.207

     Internet Address      Physical Address      Type
     22.101.101.15         00-20-af-1d-2b-91     dynamic

Ping the address and let ARP fill in the cache:

  c:>ping 22.101.101.15

  Pinging 22.101.101.15 with 32 bytes of data:

  Reply from 22.101.101.15: bytes=32 time<10ms TTL=32
  Reply from 22.101.101.15: bytes=32 time<10ms TTL=32
  ^C
  c:>arp -a

  Interface: 22.101.102.207

     Internet Address      Physical Address      Type
     22.101.0.1            08-00-02-04-89-82     dynamic
     22.101.101.15         00-20-af-1d-2b-91     dynamic

Attempt to delete the entry:

  c:>arp -d 22.101.101.15

  c:>arp -a

  Interface: 22.101.102.207

     Internet Address      Physical Address      Type
     22.101.0.1            08-00-02-04-89-82     dynamic
     22.101.101.15         00-20-af-1d-2b-91     dynamic

STATUS
======

Microsoft has confirmed this to be a problem in Microsoft TCP/IP-32. This
problem was corrected in Windows NT Workstation or Server version 3.51.

Additional query words: wfw wfwg prodtcp32

======================================================================
Keywords          :  
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTSsearch kbWinNTS350 kbWinNTS350search kbAudDeveloper kbTCPIPSearch kbZNotKeyword3 kbTCPIP311
Version           : 3.50

=============================================================================

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