fc or fcoe: that is not the question4 © 2010 cisco and/or its affiliates. all rights reserved....
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1© 2010 Cisco and/or its affiliates. All rights reserved.
J Metz, Ph.D - Product Manager, FCoE
FC or FCoE: That is Not the Question
2© 2010 Cisco and/or its affiliates. All rights reserved.
Understanding FCoE
Fibre Channel is to FCoE
as is to
3© 2010 Cisco and/or its affiliates. All rights reserved.
Fibre Channel over Ethernet (FCoE)
Benefits
Fewer adapters needed
Fewer cables
Both block I/O and Ethernet traffic co-exist on same cable
Fewer switches needed
Less power needed
Less heat generated
Less cooling needed
Less rack space needed
Interoperates with existing SANs
No gateway - stateless
FCoE
Mapping of FC frames over Ethernet
Enables FC to run on a lossless Ethernet network
Fibre
Channel
Traffic
Ethernet
4© 2010 Cisco and/or its affiliates. All rights reserved.
Fibre Channel over Ethernet (FCoE)
CNA
Unified Fabric Access Switch
(e.g., Nexus 5000)
To LAN To Storage
FCoE
Mapping of FC frames over Ethernet
Enables FC to run on a lossless Ethernet network
Fibre
Channel
Traffic
Ethernet
How Unified Fabrics Work
5
CNA
© 2010 Cisco and/or its affiliates. All rights reserved.
Network Topologies TodayGradual Shift to “Phase 1”
Core
Aggregation
Access
Core
Edge
Fabric „A‟ Fabric „B‟
Ether-channelMulti-pathingNIC
HBA
FC
Ethernet
Fibre Channel
FCoE only
DCB
NIC HBA
L2
L3
6© 2010 Cisco and/or its affiliates. All rights reserved.
It Can’t Be That Easy
VM
oti
on
VM
oti
on
ESX Host
w/HBA
ESX Host
w/CNA
ESX Host
w/iSCSI
FCoE
FC
Ethernet
Nexus 2148T
FEX
Nexus 5020
MDS 9222i
MDS 950610GbE w/ Port Channel
iSCSI over GbE
from dual-speed
N5020 port
•Converting Virtualized Servers from FC to FCoE
Now Convert Fabric “B” Edge
7© 2010 Cisco and/or its affiliates. All rights reserved.
This is called Unified Fabric – Phase 1
Evolving to Unified Fabric
Core
Aggregation
Access
Core
Edge
Fabric „A‟ Fabric „B‟
Ether-channel
Multi-pathing
FC
Ethernet
Fibre Channel
FCoE only
DCB
NIC
CNA HBA
CNA
L2
L3
8© 2010 Cisco and/or its affiliates. All rights reserved.
Catch Your Breath, Get Comfortable
9© 2010 Cisco and/or its affiliates. All rights reserved.
Evolving to Unified Fabric
Core
Aggregation
Access
Core
Edge
Fabric „A‟ Fabric „B‟
Ether-channel
Multi-pathing
FC
Ethernet
Fibre Channel
FCoE only
DCB
CNA
CNA
Moving Beyond Phase 1
FCoE
L2
L3
10© 2010 Cisco and/or its affiliates. All rights reserved.
Network TopologiesEvolving Further
Core
Aggregation
Shared Access
Core
Fabric „A‟ Fabric „B‟
CNA
FCoE FC
Ethernet
Fibre Channel
FCoE only
DCB
L2
L3
11© 2010 Cisco and/or its affiliates. All rights reserved.
Network TopologiesConnecting Unified Storage
Core
Aggregation
Shared Access
Core
Fabric „A‟ Fabric „B‟
CNA
FCoE FC
Ethernet
Fibre Channel
FCoE only
DCB
Unified
L2
L3
12© 2010 Cisco and/or its affiliates. All rights reserved.
FC
+
Ethernet
13© 2010 Cisco and/or its affiliates. All rights reserved.