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r u Mature, just handle this

why we do marking at egress port level, if we had done marking at switching engine level too...

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Re: r u Mature, just handle this

Marking is a process of changing the packet QoS level according to a policy. Policing is the process of inspecting an Ethernet frame to see if it has exceeded a predefined rate of traffic within a certain time frame (typically, this time frame is a fixed number internal to the switch). If that frame be out-of-profile (that is, it is part of a data stream in excess of the predefined rate limit), it can be either dropped or the Class of Service (CoS) value can be marked down. check out the following link for more information :

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00800946e9.shtml

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