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3
Planning Considerations for Fibre Channel Topologies
3-7
Planning Considerations for Fibre Channel Topologies
• Private device - A loop device that cannot transmit an FLOGI
command to the switch nor communicate with fabric-attached
devices is a private device. As shown in Figure 3-4, device D
2
is a
private loop device connected to a Sphereon 4500 Fabric Switch
and cannot communicate with any fabric-attached device.
However, device D
2
can communicate with switch-attached
server S
2
(using private addressing mode).
Public and private devices are partitioned into two separate
address spaces defined in the Fibre Channel address. Private
address spaces are isolated from a switched fabric. The switch
does not support any other form of Fibre Channel address
conversion (spoofing) that would allow private device-to-fabric
device communication.
NOTE: A private device can connect to the switch (loop) while a public
device is connected and using an E_Port to communicate with a switched
fabric.
Figure 3-4 Private Device Connectivity
- Products in a SAN 1
- Environment 1
- Planning Manual 1
- Contents 3
- Chapter 2 Product Management 4
- Appendix B Firmware Summary 7
- Introduction to McDATA 27
- Multi-Protocol Products 27
- Product Overview 28
- Cabinet-Mount McDATA Products 30
- SAN Management 31
- Applications 31
- Directors 32
- Director 33
- Performance 33
- Intrepid 6064 34
- Intrepid 6064 Director 35
- Intrepid 6140 36
- Intrepid 6140 Director 37
- Intrepid 10000 38
- Fabric Switches 40
- Fabric Switch 41
- Sphereon 3232 41
- Sphereon 4300 42
- Sphereon 4400 44
- Sphereon 4500 45
- Sphereon 4700 47
- SAN Routers 48
- SAN Router 49
- Eclipse 1620 SAN 50
- Eclipse 1620 SAN Router 51
- Eclipse 2640 SAN 52
- Product Features 54
- Security Features 57
- Serviceability 58
- Features 58
- Product Management 63
- Interface Summary 68
- Management Server Support 69
- Specifications 70
- Ethernet Hub 72
- Product Firmware 73
- Firmware Services 74
- Backup and Restore Features 75
- SAN Management Applications 77
- Sphereon 4300 Fabric Switch 78
- Hardware View 79
- SANvergence 80
- Manager 80
- EFCM Basic Edition Interface 82
- Command Line Interface 83
- Planning Considerations 85
- Topologies 85
- Fibre Channel Topologies 85
- Shared Mode Versus 87
- Switched Mode 87
- Switched Mode Operation 88
- Public Versus Private 90
- Private Device Connectivity 91
- Public Loop Connectivity 93
- Private Loop Connectivity 93
- FL_Port Connectivity 94
- Connecting FC-AL 95
- Devices to a 95
- Switched Fabric 95
- Tape Device 97
- Fabric Topologies 98
- Full Mesh Fabric 99
- Core-to-Edge 100
- 2-by-14 Core-to-Edge Fabric 101
- SAN Islands 102
- Fabric Topology 103
- Factors to Consider 104
- When Implementing 104
- Fabric Initialization 113
- Fabric Performance 114
- ISL Oversubscription 116
- High Device Locality 118
- Low Device Locality 118
- Interswitch Link 119
- Fabric Connection 119
- Device Fan-Out Ratio: 10 to 1 119
- Tier 2 Storage 120
- Tier 2 Servers 120
- Fabric Availability 121
- Fabric Scalability 123
- Obtaining 124
- Professional 124
- Services 124
- FCP and FICON in a 125
- Single Fabric 125
- CTP - 1 Card 127
- CTP - 0 Card 127
- SBAR - 1 Module 128
- SBAR - 0 Module 128
- Multiple Data 135
- Transmission Speeds 135
- FICON Cascading 136
- High-Integrity 137
- Minimum 137
- Requirements 137
- Best Practices 138
- Implementing SAN 143
- Internetworking Solutions 143
- SAN Island Consolidation 144
- Flexible Partitioning 146
- Technology 146
- SAN Routing 150
- SAN Routing Hierarchy 151
- SAN Routing Concepts 152
- Table 4-1 mSAN Routing Domain 160
- Figure 4-6 iFCP WAN Extension 166
- Table 4-3 mFCP Versus iFCP 170
- Inter-FlexPar Routing 171
- Implementing BC/DR Solutions 178
- Extended-Distance 179
- Operational Modes 179
- SAN Extension 181
- Transport 181
- Technologies 181
- Distance Extension 191
- Through BB_Credit 191
- Intelligent Port 193
- Consolidation 202
- Physical Planning 205
- Considerations 205
- Port Requirements 206
- SFP Optical 208
- Transceivers 208
- High-Availability 210
- Fibre Channel 211
- Cables and 211
- Connectors 211
- Routing Fiber-Optic 212
- Management 214
- Remote User 215
- Workstations 215
- SNMP Management 217
- EFCM Basic Edition 218
- Interface 218
- Security Provisions 219
- SANtegrity 220
- Authentication 220
- SANtegrity Binding 223
- PDCM Arrays 224
- PDCM Array - Example Problem 226
- Preferred Path 227
- Director Zoning 229
- Server and 233
- Storage-Level 233
- Access Control 233
- Security Best 234
- Practices 234
- Optional Feature Keys 237
- Flexport Technology 240
- OpenTrunking 241
- Full Volatility 242
- Full Fabric 242
- Remote Fabric 243
- N_Port ID 243
- Virtualization 243
- Element Manager 243
- Application 243
- Configuration Planning 245
- Task 1: Prepare a Site Plan 246
- Configuration Planning Tasks 247
- Task 5: Plan Ethernet Access 251
- Rules for Port Names 257
- Rules for Nicknames 258
- Task 14: Plan AC Power 272
- Product Specifications 283
- Power Requirements 285
- Heat Dissipation 287
- Clearances 287
- Operating 289
- Dimensions 290
- Cabinet Footprint 290
- Fabricenter Cabinet Footprint 291
- Firmware Summary 293
- System-Related Differences 293
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