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Because certain user uploading lot of packets to packet loss hostcarID uploading lead to other low - BIT similar MAC user ping packet loss or disconnection

Publication Date:  2014-11-07 Views:  77 Downloads:  0
Issue Description
【 ProblemSu mm ary 】 ME60 static user failure or packet loss problem
【 ProblemDetails 】 null
Handling Process
The equipment ping user packet loss but user ping equipment impassability, of forwarding flow in user ping equipment. Run ping user back, and equipment return flow to send, the uploading process differences.
The ping packet testing, discover big bag ratio is high, description, and car related.
3. analyzed again one user problem exists, doesn't a cpcar problem, but hostcar () for user problem
Analysis log, a large number of hostcar discarded, and for the same user, it indicates that the user is attacks.
Analyzing the user mac and Fault Olt mac, low, bit are the same, the lead to the hash generated hostcarid the
Root Cause
Have attack traffic in me60 frequent send, lead to continue vc-host-car discarded. Fault olt equipment is mac and this attack mac after a few is consistent, the lead to the same vc-host-car, so this olt - Attack is often user car was wrung. Thus causing the ping packet loss, user often disconnected, phenomenon.
Solution
【 ResolutionSu mm ary 】, will attack user screen or adjust vc-host-car A problem
【 ResolutionDetails 】 problem cause: have attack traffic in me60 send frequently, lead to last vc-host-car discarded. Fault olt equipment is mac and this attack mac after a few is consistent, the lead to the same vc-host-car, so this olt - Attack is often user car was wrung. Thus causing the ping packet loss, user often disconnected, phenomenon. The analysis for user is on lot of packets uploading. Solution: Please will attack user block or adjust vc-host-car A problem / / RiskofSolution: Non - RiskOperation
Suggestions
【 ResolutionSu mm ary 】, will attack user screen or adjust hostcar A problem
【 ResolutionDetails 】 problem cause: have attack traffic in me60 send frequently, lead to last hostcar discarded. Fault olt equipment is mac and this attack mac after a few is consistent, the lead to the same hostcar, so this olt - Attack is often user car was wrung. Thus causing the ping packet loss, user often disconnected, phenomenon. The analysis for user is on lot of packets uploading. Solution: Please will attack user block or adjust hostcar A problem

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