Knowledge Base

ARP Static Cache Entries Switch to Dynamic

Article ID: 124797

Article Last Modified on 11/14/2003

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

This article was previously published under Q124797

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 query words: wfw wfwg prodtcp32 3.11 tcpip

Keywords: KB124797