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FCoE over TRILLdraft-mme-trill-fcoe-00http://tools.ietf.org/html/draft-mme-trill-fcoe-00
Informational
David Melman Marvell
Tal Mizrahi Marvell
Donald Eastlake, 3rd Huawei
IETF Meeting 81, July 2011
2
Background
FCoE – Fibre Channel over Ethernet (FCoE).
FCF – FCoE Forwarder.
ENode – FCoE end node.
FCF functionality is a bit similar to RBridge in terms of:Forwards Ethernet frames based on higher layer address.Modifies MAC addresses to reflect next hop.
FCoE Storage Array
(ENode)
Native FC
Server(ENode)
FCF
FCF FCF
FCF
FCF
FCoE Cloud
FC Storage Array
3
Background (2)
The TRILL topology is very similar.
RBridges play similar roles as FCFs.
Host
RBridge
RBridge RBridge
RBridge
RBridge
Host
Host
TRILL Cloud
4
FCoE with TRILL (1)
What happens when we have FCoE and TRILL in the same network?
Separate cloud approach:
HostEthernet /
FCoE
RBridge
RBridge RBridge
RBridge
RBridge
TRILL Cloud
Native FC
FC Storage Array
FCF
HostEthernet /
FCoE
• FCoE traffic between hosts must be forwarded through an FCF.
• With separate clouds: goes through more hops.
5
FCRB – FCF over RBridge
HostEthernet /
FCoE
Ethernet / FCoEover
TRILL Cloud
HostEthernet /
FCoE
FCF
RBridge
FCRB
6
Data Center Topology with FCRB Native FC
...Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Rack
FCRBToR
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Rack
FCRBToR
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Rack
FCRBToR
FCRBEoR
FCRBEoR
...
WAN
...
7
Next Steps
July 2011 – draft 00.
Receive feedbacks from WG.
Thanks
9
Data Center Topology with FCRB (2)
...Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Rack
FCRBToR
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Rack
FCRBToR
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Eth/FCoE Server
Rack
FCRBToR
RBridgeEoR
RBridgeEoR
...
TRILLCloud
• EoR are RBridge – not FCRB.• Traffic between FCRBs is forwarded
over TRILL cloud.
