ARP Static Cache Entries Switch to Dynamic

 Last reviewed: September 9, 1996
Article ID: Q124797
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

SYMPTOMS

If a static ARP (address resolution protocol) cache entry is added (for example, ARP -s inet_addr eth_addr) it occasionally switches to dynamic. Unfortunately, dynamic entries are deleted after two minutes of dormancy.

CAUSE

Whenever ARP receives an ARP request for itself, it updates its ARP cache with the information of the requestor. It does this without respect to the type of an existing entry.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.5. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional reference words: wfw wfwg prodtcp32 3.11 tcpip
KBCategory: kbnetwork kbbug3.50
KBSubcategory: nttcp



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Last reviewed: September 9, 1996
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