large amounts of data flowing between client and primary where WSUS resides

Hi,

we are getting calls from the network team blaming us for high latency caused by SCCM updates.  We run in native mode and use port 8531 for coms with WSUS.

The volume of data per client this month seems to be roughly the same, around the 60Mb mark per client connection to the WSUS server - which is also the primary.

I cherry-picked a few machines from the reported clients generating high traffic and checked where the clients where getting content from and all are getting as expected, from their local DP.  so I dont understand the volume of 60Mb+ on the communication between the client and the WSUS running on the primary?  surely the update scans against the WSUS server would only generate a small amount of traffic (not 60Mb) and once it works out what it needs it then looks for content locally?  I assumed that these client were, for some reason, downloading from the primary DP which would explain the volume of data, so I was surprised that these client are actually getting content, as expected, from the local site....

can anyone explain the possible reason for high data volumes specifically to do with updates, as the traffic is all over port 8531, between the client and the WSUS server when it is receiving the actual content locally and not from the primary DP?

thanks

doug

February 21st, 2013 2:40pm

Unless you setup the WSUS to push content it should only receive metadata from the SUP.  How offten are you syncing the SUP, what are the schedules for the client.  Are ou running FEP.  This will make the clienit check more frequent depending on how often you have the client set to scan and check for def updates.

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February 21st, 2013 6:57pm

Hi

We have the exact same problem with our environment.

Our production environment has no internet connection so we have a WSUS installed on internet that we use wsusutil to export medatadata from and copy the content. after the export we import it to our SCCM 2007 central primary site server that have an active SUP (wsus installed). Then we have 2 child SCCM 2007primary sites with each have an active SUP, 10000 clients uses each SUP for scanning. when installing the softwareupdates we have local DPs so there should not be so much traffic to the Child primary sites.

We have a thought that when doing the export/import from internet WSUS to the SCCM central site WSUS, the WSUS database is updated as it looks like it is a new database everytime import is done with wsusutil. And therefore the clients thinks they always have to do a full scanfile sync after every time WSUS and SCCM have done their sync with eachother. the problem ocurs everytime a new import and a wsussync is done between WSUS and SCCM. the wsussync in sccm is set to sync every night at 02:00 am.

the export/import from internet wsus to sccm wsus is done once a month at patchtuesday

/Patrik

May 19th, 2015 1:41am

Hi

We have the exact same problem with our environment.

Our production environment has no internet connection so we have a WSUS installed on internet that we use wsusutil to export medatadata from and copy the content. after the export we import it to our SCCM 2007 central primary site server that have an active SUP (wsus installed). Then we have 2 child SCCM 2007primary sites with each have an active SUP, 10000 clients uses each SUP for scanning. when installing the softwareupdates we have local DPs so there should not be so much traffic to the Child primary sites.

We have a thought that when doing the export/import from internet WSUS to the SCCM central site WSUS, the WSUS database is updated as it looks like it is a new database everytime import is done with wsusutil. And therefore the clients thinks they always have to do a full scanfile sync after every time WSUS and SCCM have done their sync with eachother. the problem ocurs everytime a new import and a wsussync is done between WSUS and SCCM. the wsussync in sccm is set to sync every night at 02:00 am.

the export/import from internet wsus to sccm wsus is done once a month at patchtuesday

/Patrik
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May 19th, 2015 1:42am

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