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LLMNR Cache

    Question

  • OK, still looking for some authoritative answer on how to view  the LLMNR cache in Windows. 

    According to the Cable Guy, the LLMNR cache is different from the DNS resolver cache.  But in his "steps" he doesn't mention where the cache comes in at all:

    "When a single-label, unqualified name needs to be resolved, a computer running Windows Vista that is using both IPv6 and IPv4 (the default configuration) will do the following:

    1. Perform normal DNS resolution by combining the single-label name with the primary DNS suffix of the computer and sending a DNS Name Query Request message to its DNS server. Windows Vista performs additional DNS queries as needed based on name devolution or additional search suffixes that have been configured.

    2. If DNS name resolution is not successful (for example, the DNS server returns an RCODE=3), send up to two sets of multicast LLMNR Name Query Request messages over both IPv6 and IPv4.

    3. If LLMNR name resolution is not successful and NetBT is enabled, broadcast up to three NetBIOS Name Query Request messages."

    According to Minasi, it can be viewed with /displaydns.  http://www.minasi.com/forum/topic.asp?TOPIC_ID=36887

    And this post is just plain confusing:  http://social.technet.microsoft.com/Forums/gu-IN/w7itpronetworking/thread/b08d3f06-8697-46ae-b659-cb40d78cd7c5 ,

    Anyone have some clarity on this?

    TIA!


    Jason Yates


    • Edited by ronjayates5 Sunday, February 12, 2012 8:39 PM
    Sunday, February 12, 2012 8:36 PM

Answers

  •  

    Hi,

     

    As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as ‘Answered’ as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to  reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish.

    BTW,  we’d love to hear your feedback about the solution. By sharing your experience you can help other community members facing similar problems. Thanks for your understanding and efforts.

     

    Regards,

    Leo   Huang

    TechNet Subscriber Support

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    Leo Huang

    TechNet Community Support

    Monday, February 20, 2012 1:44 AM

All replies

  •  

    Hi,

    Base on my test, there’s no specific LLMNR cache in Windows 7. And on that link:

    http://www.minasi.com/forum/topic.asp?TOPIC_ID=36887

    ipconfig /displaydns could show DNS cache, but cannot display especial for LLMNR cache.

    Thank you for your understanding.

    Regards,

    Leo   Huang

    TechNet Subscriber Support

    If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.


    Leo Huang

    TechNet Community Support

    Monday, February 13, 2012 6:28 AM
  •  

    Hi,

     

    Did your problem solved? Please feel free to give me any update.

     

    Thanks.

     

    Regards,

    Leo   Huang

    TechNet Subscriber Support

    If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.


    Leo Huang

    TechNet Community Support

    Thursday, February 16, 2012 12:49 AM
  •  

    Hi,

     

    As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as ‘Answered’ as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to  reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish.

    BTW,  we’d love to hear your feedback about the solution. By sharing your experience you can help other community members facing similar problems. Thanks for your understanding and efforts.

     

    Regards,

    Leo   Huang

    TechNet Subscriber Support

    If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.


    Leo Huang

    TechNet Community Support

    Monday, February 20, 2012 1:44 AM