SNMP Agent Breaks Up Variable Bindings List

 Last reviewed: October 18, 1996
Article ID: Q127870
The information in this article applies to:
  • Microsoft Win32 Software Development Kit (SDK), versions 3.1, 3.5, 3.51, and 4.0

SUMMARY

When the SNMP agent receives a request for multiple variables in a single packet, for each entry in the variable bindings list the agent queries the required sub-agent (in this case, the .DLL acting as the agent) and packs up the results in a response variable bindings list and returns it in a single packet.

For example, say the variables requested are: 

   ip.ipInReceives            (Internet MIB II )
   tcp.tcpMaxConn            (Internet MIB II )

   .iso.org.dod.internet.private.enterprises.lanmanager.lanmgr-2.common.
   comVersionMaj            (LanManager MIB II)

   icmp.icmpOutErrors         (Internet MIB II )
In this case, the agent queries the INETMIB2.DLL file twice, the LMMIB2.DLL once, and the INETMIB2.DLL once. Then it packs the results in a response packet and sends it to the requesting manager. There is no "snapshot" of the MIB.

STATUS

This problem is fixed in Windows NT 4.0.

Microsoft has confirmed this to be a problem in Windows NT 3.51. A supported fix is now available, but is not fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Product Support Services for more information.

Additional reference words: 3.10 3.50 4.00 95
KBCategory: kbnetwork
KBSubcategory: NtwkSnmp

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Last reviewed: October 18, 1996
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