Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2010-09-24 21:10:54 →
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Editor: PieterSmit
Comment:
← Revision 3 as of 2010-09-24 21:11:25 → ⇥
Size: 418
Editor: PieterSmit
Comment:
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     1. Take 101110 and shift it left two bits: 10111000      1. Take 101110 and shift it left two bits: 10111000 (ECN is right 2 bits)

DSCP Diffserve code point

  • Priority markings on IP traffic.
  • How to match with tcpdump ?
    • for EF
      1. Take 101110 and shift it left two bits: 10111000 (ECN is right 2 bits)
      2. Convert it to hex: 0xb8
      3. Create a filter, masking out the ECN bits:

        • ip[1] & 0xfc == 0xb8

...

dscp (last edited 2010-09-24 21:11:25 by PieterSmit)