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# Fibre Channel Over Ethernet (FCoE)
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Fibre Channel over Ethernet (FCoE) is a proposed mapping of Fibre Channel over selected full duplex IEEE 802.3 networks.
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## History
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This protocol proposal is led by Cisco and is under discussion in the T11 FC-BB Working group.
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## Protocol dependencies
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- [Ethernet](/Ethernet): FCoE uses [Ethernet](/Ethernet) as its transport protocol. The IEEE-assigned Ethertype for FCoE traffic is 0x8906.
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## Example traffic
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![fcoe-t11.png](uploads/__moin_import__/attachments/FCoE/fcoe-t11.png "fcoe-t11.png")
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## Wireshark
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The FCoE dissector is fully functional.
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## Preference Settings
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None.
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## Example capture files
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- [SampleCaptures/fcoe-t11.pcap](uploads/__moin_import__/attachments/SampleCaptures/fcoe-t11.pcap)
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- [SampleCaptures/fcoe-t11-short.cap](uploads/__moin_import__/attachments/SampleCaptures/fcoe-t11-short.cap)
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- [SampleCaptures/fcoe1.cap](uploads/__moin_import__/attachments/SampleCaptures/fcoe1.cap)
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## Display Filter
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Show only the FCoE based traffic:
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```
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fcoe
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```
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Show only FCoE traffic with start-of-frame value SOFn3:
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```
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fcoe.sof == SOFn3
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```
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Show only FCoE traffic with bad CRCs:
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```
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fcoe.crc_bad == True
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```
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## Capture Filter
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Capture only the FCoE traffic over the standard Ethertype (0x8906):
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```
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eth.type == 0x8906
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```
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## External links
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- <http://fcoe.com> - Primary site for FCoE information.
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- <http://www.t11.org/ftp/t11/pub/fc/bb-5/07-479v0.pdf> - presentation describing frame format.
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## Discussion
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---
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Imported from https://wiki.wireshark.org/FCoE on 2020-08-11 23:13:59 UTC |