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How does distributed cache work when an organization has overlapping VLAN / subnets ? RRS feed

  • Question

  • E.g. if office A and office B both use a 192.168.0.1/24 subnet .. and assume the content is only cached in Office A .. will machines in office B try to connect to office A ?

    what is the typical time out / fail behavior when machines cannot get content from the local host ?


    Jaspreet Singh Narang

    Monday, April 27, 2020 7:43 AM

All replies

  • Hi,

    Could you please confirm what branchcache mode you are using?

     

    If you've deployed hosted mode (install a Windows Server in the branch, called Hosted Cache Server),it has the advantage that the  clients on different subnets can benefit from the cache server.

     

    Best Regards,

    Jenny


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    Tuesday, April 28, 2020 7:26 AM
  • I'm using Distributed Cache. We've offices which share the same subnet. So we need to restrict the client from not crossing the WAN network to get access to the content.

    Jaspreet Singh Narang

    Tuesday, April 28, 2020 7:46 AM
  • Hi,

    Please refer to below statement:

    Distributed cache mode operates on a single subnet. At a multiple-subnet branch office that is configured for distributed cache mode, a file downloaded to one subnet cannot be shared with client computers on other subnets.

     

    Because of this, clients on other subnets, unable to discover that the file has already been downloaded, get the file from the main office content server, using WAN bandwidth in the process.

     

    https://docs.microsoft.com/en-us/windows-server/networking/branchcache/branchcache#centralized-caching-for-multiple-subnet-branch-offices

     

     

    Thanks,

    Jenny


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    Wednesday, April 29, 2020 7:49 AM