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akhalighiFlag for Canada

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IDPS slows SMB traffic

Hello folks

we have an issue where our in-line IDPS system (McAfee M-8000) slows down smb traffic . here are some details :

- if we switch IDPS to layer 2 mode ; performance is fine . no cabling or duplex issue
- if we remove all IDPS policies - smb is still slow . so it's not the policy causing it
- There is no rate limiting or QoS profile on the device

any thoughts ?
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btan

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ASKER

all very nice suggestions. I'll try and get back .
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btan

Suggested troubleshooting approach given and the question should not be deleted.
Troubleshooting steps given.