Microsoft KB Archive/121619

= ARP Cache Commands May Not Work Correctly =

Article ID: 121619

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Server 3.5
 * Microsoft TCP/IP for Windows for Workgroups 3.11

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This article was previously published under Q121619



3.50

WINDOWS

kbnetwork kbbug3.50



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: KB121619

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