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DCBX Example
The following figure shows how DCBX is used on an Aggregator installed in a Dell PowerEdge M I/O
Aggregator chassis in which servers are also installed.
The external 40GbE ports on the base module (ports 33 and 37) of two switches are used for uplinks
configured as DCBx auto-upstream ports. The Aggregator is connected to third-party, top-of-rack (ToR)
switches through 40GbE uplinks. The ToR switches are part of a Fibre Channel storage network.
The internal ports (ports 1-32) connected to the 10GbE backplane are configured as auto-downstream
ports.
On the Aggregator, PFC and ETS use DCBX to exchange link-level configuration with DCBX peer devices.
Figure 4. DCBx Sample Topology
48
Data Center Bridging (DCB)
- M I/O Aggregator 1
- 9.5(0.1) 1
- Notes, Cautions, and Warnings 2
- Contents 3
- About this Guide 13
- Related Documents 14
- Before You Start 15
- Default Settings 16
- Data Center Bridging Support 17
- Link Tracking 18
- Configuring VLANs 18
- Where to Go From Here 19
- Configuration Fundamentals 20
- Navigating CLI Modes 21
- The do Command 22
- Undoing Commands 23
- Obtaining Help 23
- Entering and Editing Commands 24
- Command History 25
- Data Center Bridging (DCB) 27
- Priority-Based Flow Control 28
- Applying a DCB Map on a Port 35
- Configuring Lossless Queues 36
- Enabling Data Center Bridging 38
- ETS Operation with DCBx 43
- DCBX Operation 44
- DCBx Port Roles 45
- DCB Configuration Exchange 46
- Configuration Source Election 46
- DCBX Example 48
- DCBX Error Messages 49
- DHCP Client 65
- DHCP Client on a VLAN 66
- Figure 6. DHCP packet Format 67
- Option 82 68
- FIP Snooping 71
- FIP Snooping on VLANs 75
- FC-MAP Value 75
- Bridge-to-FCF Links 76
- FIP Snooping Prerequisites 76
- FIP Snooping Restrictions 76
- FIP Snooping Example 83
- Debugging FIP Snooping 84
- IGMP Overview 85
- IGMP Version 2 85
- Joining a Multicast Group 86
- Leaving a Multicast Group 86
- IGMP Version 3 86
- Leaving and Staying in Groups 88
- IGMP Snooping 89
- Disabling Multicast Flooding 90
- Displaying IGMP Information 90
- Interface Types 93
- Layer 2 Mode 95
- Management Interfaces 96
- VLAN Membership 98
- VLANs and Port Tagging 99
- Configuring VLAN Membership 99
- Displaying VLAN Membership 100
- Interfaces 101
- Port Channel Interfaces 102
- Interface Range 105
- Overlap Port Ranges 106
- Create a Single-Range 106
- Create a Multiple-Range 106
- Exclude a Smaller Port Range 106
- Maintenance Using TDR 108
- MTU Size 109
- Viewing Interface Information 113
- Clearing Interface Counters 114
- Link Aggregation 122
- Uplink LAG 123
- Server-Facing LAGs 123
- LACP Modes 123
- Auto-Configured LACP Timeout 123
- LACP Example 124
- Creating a Port Channel 125
- Uplink LAGs to be Active 130
- MAC Address Station Move 139
- MAC Move Optimization 140
- Overview 141
- Optional TLVs 143
- LLDP Operation 143
- Clearing LLDP Counters 145
- Debugging LLDP 146
- Relevant Management Objects 147
- Port Monitoring 153
- Important Points to Remember 154
- Security for M I/O Aggregator 156
- AAA Authentication 157
- Enabling AAA Authentication 158
- Server-Side Configuration 159
- RADIUS Authentication 160
- Monitoring RADIUS 163
- AAA Accounting 165
- Enabling AAA Accounting 165
- Monitoring AAA Accounting 166
- TACACS+ Remote Authentication 167
- Enabling SCP and SSH 168
- Secure Shell Authentication 170
- Troubleshooting SSH 173
- VTY MAC-SA Filter Support 175
- Implementation Information 176
- Reading Managed Object Values 177
- Deriving Interface Indices 181
- Monitor Port-Channels 182
- Entity MIBS 183
- Standard VLAN MIB 185
- Configuration 186
- SNMP Traps for Link Status 187
- Stacking 188
- Stack Management Roles 189
- Stack Master Election 190
- Failover Roles 190
- MAC Addressing 191
- Stacking LAG 191
- Stacking VLANs 191
- Stacking Port Numbers 192
- Configuring a Switch Stack 194
- Accessing the CLI 195
- Adding a Stack Unit 196
- Resetting a Unit on a Stack 196
- Ethernet 197
- Using Show Commands 199
- Failure Scenarios 203
- Upgrading a Switch Stack 205
- Upgrading a Single Stack Unit 206
- Broadcast Storm Control 208
- System Time and Date 209
- Setting Daylight Savings Time 210
- Feature Description 213
- UFD and NIC Teaming 216
- Introduction 224
- Multiple Uplink LAGs 225
- Stacking in PMUX Mode 232
- Creating a DCB Map 234
- Creating an FCoE VLAN 235
- Creating an FCoE Map 235
- Sample Configuration 237
- Configure LLDP 238
- Enabling LLDP 239
- Advertising TLVs 240
- Figure 29. Configuring LLDP 241
- Configuring LLDPDU Intervals 243
- Configuring a Time to Live 243
- Virtual Link Trunking (VLT) 245
- VLT Terminology 247
- VLT Bandwidth Monitoring 250
- VLT and Stacking 251
- VLT and IGMP Snooping 251
- VLT Port Delayed Restoration 251
- VLT Routing 251
- Spanned VLANs 251
- Verifying a VLT Configuration 252
- Troubleshooting VLT 257
- FC Flex IO Modules 259
- Processing of Data Traffic 263
- Installation 266
- Unpacking the Switch 266
- NPIV Proxy Gateway Operation 270
- Terms and Definitions 271
- Upgrade Procedures 286
- Debugging and Diagnostics 287
- Software show Commands 289
- Offline Diagnostics 291
- Trace Logs 292
- Environmental Monitoring 294
- Table 26. SNMP Traps and OIDs 297
- Buffer Tuning 298
- Deciding to Tune Buffers 299
- Troubleshooting Packet Loss 303
- Dataplane Statistics 304
- Displaying Drop Counters 306
- Power-cycling the unit(s) 308
- Standards Compliance 309
- General Internet Protocols 310
- General IPv4 Protocols 310
- Network Management 311
- MIB Location 314
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