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New Member

6500 with SUP720: Output Policing

Can anybody tell me which Bytes from the L2 Header are included in the policing calculation if i police the rate of a ethernet interface (with a policy-map)? i.e. Preamble, dot1q, mac......

Thanks for any feedback!

  • Other Network Infrastructure Subjects
3 REPLIES

Re: 6500 with SUP720: Output Policing

Hi there,

funny enough the info is found where one wouldn´t really expect it:

What Bytes Are Counted by IP to ATM CoS Queueing?

http://www.cisco.com/en/US/tech/tk39/tk824/technologies_tech_note09186a00800942f5.shtml

So the answer would be: no preamble and no CRC is counted. It is the same byte counter implemented as with show interface.

Hope this helps

Martin

New Member

Re: 6500 with SUP720: Output Policing

Hallo Martin

Tanks for your feedback! Today i measured that the vlan tag is alo excluded int the policing calculation. The calculation is based on IP-Packet+18Bytes Ethernet overhead.

Cheers und frohe Festtage :-)

Re: 6500 with SUP720: Output Policing

Frohe Festtage!

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