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seen Sep 9 at 20:13

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comment ActiveDirectory ObjectClass of 'User' vs 'UserProxy'
@tony roth, fyi, we resolved the issue we were running into and as we expected it had nothing to do with User vs UserProxy ObjectClass. Good to have this new information though that Mathias provided.
Mar
21
accepted ActiveDirectory ObjectClass of 'User' vs 'UserProxy'
Mar
19
comment ActiveDirectory ObjectClass of 'User' vs 'UserProxy'
@tony roth, we sell a COTS product that has LDAP integration and one particular customer is returning password mismatch error even though the ActiveDirectory logs show authentication was successful. When we compared this customer's data to other customers, this is one difference that stood out. We weren't familiar with UserProxy. I have no idea if it's related to the problem, but I was curious about the difference.
Mar
19
asked ActiveDirectory ObjectClass of 'User' vs 'UserProxy'
Feb
28
comment File download on IIS6 failing wth Connection_Abandoned when file is over 40mb and no UrlScan installed
Thank you for your reply. MaxRequestLength is for upload. The problem I'm having is with downloads.
Feb
27
asked File download on IIS6 failing wth Connection_Abandoned when file is over 40mb and no UrlScan installed
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comment What causes duplicate ACK records?
@Mike Pennington, I wouldn't say I'm obsessing over the ACKs. I see a problem--certain clients can't stream video smoothly. The ACKs is one difference between the clients that work and those that don't. I don't understand what that difference, so I'm asking here. I'm also concurrently investigating five other things that may be totally unrelated to the ACKs that could effect the streaming performance. I still would like to learn more about this particular issue while I investigate everything fully. Murali Suriar's answer actually explained a lot; I'm glad to have learned something new today.
May
6
comment What causes duplicate ACK records?
@joeqwerty, thanks, I'm focusing on the duplicate ACK's because that's the only thing I see different in the clients that work (i.e., can stream video smoothly) and clients that don't work (cannot stream smoothly). The ones that work have an occasional duplicate ACK and the ones that don't work have much more regular three duplicate ACKs in sequence. It's what stood out as different.
May
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comment What causes duplicate ACK records?
@SpacemanSpiff, there's a Cisco ASR 1006 router.
May
6
revised What causes duplicate ACK records?
added 176 characters in body
May
6
comment What causes duplicate ACK records?
The WAN is "two point to point circuits" between three sites on the east coast and mid-west United States.
May
6
comment What causes duplicate ACK records?
Thanks for your comments. You're right, the packet capture is from the client. If I understand what you're saying, the duplicate ACKs are not the client doing anything wrong but are actually a trigger from the client that it didn't receive a different record (the one after the ACKs). Is that correct? What things can I look into on the client PC that would cause this? If it's not a client PC problem why would it consistently show up on some clients and not others?
May
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awarded  Commentator
May
6
comment What causes duplicate ACK records?
Thank you for your answer. In my case I know enough to run Wireshark and see that there are duplicate ACKs and that it is a problem. I don't know what are the possible causes and what to look into, hence the question. I'm also not blaming the network. On the contrary, I think it's almost certainly a client PC issue. Most standard-issue enterprise managed PC's exhibit the problem but the two PC's that belong to network administrators do not. My question is what types of things no the client PC can cause duplicate ACK records?