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DarioGB_339840's avatar
DarioGB_339840
Icon for Altostratus rankAltostratus
May 29, 2018

tcpdump 'h' noise amplifier

Does anyone know the definition of 'h' noise amplifier in tcpdump?

It's possible to use this amplifier when I sniff TMM traffic or CMI traffic, so I think it's just to sniff internal processes traffic. Could anyone verify this?

 tcpdump -nnei tmm:h host 127.1.1.2 and host 127.1.1.254
 tcpdump -nnei VLAN_HA:h host 1.1.1.1 and port 6699

Is there any official doc related?

KR, Dario.

5 Replies

    • lmiestc_26212's avatar
      lmiestc_26212
      Icon for Cirrus rankCirrus

      Notes about the wireshark plugin

       

      As of Wireshark 2.6.0 (rel. 4/24/2018) the 1.11 version of the f5ethtrailer dissector is included as a built-in. It is no longer necessasary to use the plugin do decode f5ethtrailer information.

       

      It is disabled by default. To enable it, from the menu select "Anyalyze" : "Enabled Protocols...". Then search for f5ethtrailer and enable the dissector. https://www.wireshark.org/news/20180424.html

       

    • DarioGB_339840's avatar
      DarioGB_339840
      Icon for Altostratus rankAltostratus

      Hello Imiestc, thanks for your response ;-).

       

      Actually, I'm asking for 'h' option (not for 'nnn'), which is not included in this KB.

       

      Do you know any other which talks about 'h' option?

       

      KR, Dario.

       

    • DarioGB_339840's avatar
      DarioGB_339840
      Icon for Altostratus rankAltostratus

      Just to clarify. With "noise amplifier" i mean "noise amplitude".

       

      Any help?