Module 7: IP SAN, FCoE, NVMe-OF (FCoE Overview) Flashcards
What is FCoE?
enables FC SAN traffic to run directly over a converged enhanced ethernet using existing connections
What does FCoE do?
converges FC and Ethernet protocols over a single interface adapter and cable
What is the use case for implementing FCoE?
consolidate networking connectivity points
reduce number of cables/NICs/ports
reduce switch infrastructure
What piece of hardware do you need for FCoE?
FCoE Switch - gave GB Ethernet and FC ports
special converged network adapter (CNA) - installed in each host system that requires LAN and FC SAN connectivity
What is the role of the CNA in FCoE?
replaces the NIC and FC HBA adapters - connects to both FC SAN and Ethernet LAN through single port connected to FCoE Switch
How is data shipped over FCoE?
converged LAN and SAN traffic separated before forwarded to host OS and applications
How does FCoE encapsulation work?
FCoE encapsulates unchanged FC Frames into Ethernet frames as the payload
What is the difference between NICs and HBAs?
NICs are for Ethernet connections to connect to existing LAN
HBAs are used to connect out to a SAN - mostly in FC networks - there to give host block level LUNs (technically a NIC as well)
What are CNAs attached to?
hosts
What are the two software configurations we put on CNAs?
vHBAs
vNICs
What are vHBAs?
software makes it look like normal FC HBA
uses code to assign the CNAs FC network names and than transports block IO
What is a vNIC?
assign the CNAs MAC addresses to transport file IO
What happens once data from CNA Host reaches FCoE Switch?
switch will examine header of packet to determine where data should go - will connect to both LAN w/ Ethernet and FC SAN
