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You cannot directly filter PROTO protocols while capturing. However, if you know the ["TCP"] port used (see above), you can filter on that one.

Fibre Channel Over Ethernet (FCoE)

Fibre Channel over Ethernet (FCoE) is a proposed mapping of Fibre Channel over selected full duplex IEEE 802.3 networks.


This protocol proposal is led by Cisco and is under discussion in the T11 FC-BB Working group.

Protocol dependencies

  • ["Ethernet"]: FCoE uses ["Ethernet"] as its transport protocol. The IEEE-assigned Ethertype for FCoE traffic is 0x8906.

Example traffic



The FCoE dissector is fully functional.

Preference Settings


Example capture file

  • attachment:SampleCaptures/fcoe1.cap

Display Filter

  • Show only the FCoE based traffic:
    Show only FCoE traffic with start-of-frame value SOFn3:
     fcoe.sof == SOFn3 
    Show only FCoE traffic with bad CRCs:
     fcoe.crc_bad == True 

Capture Filter

  • Capture only the FCoE traffic over the standard Ethertype (0x8906):
     eth.type == 0x8906 


FCoE (last edited 2008-04-12 17:50:20 by localhost)