Forum Discussion

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

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.

application delivery
BIG-IP
tcpdump
TMOS

5 Replies

Sort By
    • lmiestc_26212's avatar
      lmiestc_26212
      Icon for Cirrus rankCirrus
      May 29, 2018

      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
      May 29, 2018

      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
      Jun 15, 2018

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

       

      Any help?