Dell PowerEdge FX2/FX2s Manual de usuario Pagina 208
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– For an example of debug log message, refer to Clearing a UFD-Disabled Interface.
Uplink Failure Detection (SMUX mode)
In Standalone or VLT modes, by default, all the server-facing ports are tracked by the operational status
of the uplink LAG. If the uplink LAG goes down, the aggregator loses its connectivity and is no longer
operational. All the server-facing ports are brought down after the specified defer-timer interval, which is
10 seconds by default. If you have configured VLAN, you can reduce the defer time by changing the
defer-timer value or remove it by using the
no defer-timer command.
1. View the Uplink status group.
EXEC Privilege mode
show uplink-state-group
Dell#show uplink-state-group
Uplink State Group: 1 Status: Enabled, Down
2. Enable the uplink group tracking.
UPLINK-STATE-GROUP mode
enable
Dell(conf)#uplink-state-group 1
Dell(conf-uplink-state-group-1)#enable
To disable the uplink group tracking, use the no enable command.
3. Change the default timer.
UPLINK-STATE-GROUP mode
defer-timer seconds
Dell(conf)#uplink-state-group 1
Dell(conf-uplink-state-group-1)#defer-timer 20
Dell(conf-uplink-state-group-1)#show config
!
uplink-state-group 1
downstream TenGigabitEthernet 0/1-12
upstream Port-channel 128
defer-timer 20
Configuring Uplink Failure Detection (PMUX mode)
To configure UFD, use the following commands.
1. Create an uplink-state group and enable the tracking of upstream links on the switch/router.
CONFIGURATION mode
uplink-state-group group-id
• group-id: values are from 1 to 16.
To delete an uplink-state group, use the no uplink-state-group group-id command.
2. Assign a port or port-channel to the uplink-state group as an upstream or downstream interface.
208
Uplink Failure Detection (UFD)
- 9.6(0.0) 1
- Notes, Cautions, and Warnings 2
- Contents 3
- About this Guide 13
- Information Symbols 14
- 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
- DCBX Operation 39
- DCBx Operation 40
- DCBx Port Roles 40
- DCB Configuration Exchange 41
- Configuration Source Election 42
- DCBX Example 43
- DCBX Error Messages 45
- DHCP Client 63
- DHCP Client on a VLAN 64
- Figure 6. DHCP packet Format 65
- Option 82 66
- FIP Snooping 69
- FIP Snooping on VLANs 73
- FC-MAP Value 73
- Bridge-to-FCF Links 73
- FIP Snooping Prerequisites 73
- Configuring FIP Snooping 74
- FIP Snooping Example 81
- Debugging FIP Snooping 82
- IGMP Overview 83
- IGMP Version 3 84
- Leaving and Staying in Groups 86
- IGMP Snooping 87
- Displaying IGMP Information 87
- Interface Types 91
- Layer 2 Mode 93
- Management Interfaces 94
- VLAN Membership 96
- Configuring VLAN Membership 97
- Displaying VLAN Membership 98
- Port Channel Interfaces 99
- Port Channel Benefits 100
- Port Channel Implementation 100
- Interfaces 101
- Interface Range 102
- Bulk Configuration Examples 103
- MTU Size 106
- Viewing Interface Information 109
- Clearing Interface Counters 110
- Fibre Channel Interface 111
- VLT-Peer 114
- Link Aggregation 119
- LACP Modes 120
- Auto-Configured LACP Timeout 120
- Creating a Port Channel 121
- Configuring Auto LAG 125
- Uplink LAGs to be Active 127
- Switches in VLT Mode 128
- LAG Bundle 129
- MAC Address Station Move 135
- MAC Move Optimization 136
- Protocol Data Units 137
- Optional TLVs 138
- Management TLVs 139
- LLDP-MED Capabilities TLV 141
- LLDP-MED Network Policies TLV 142
- Extended Power via MDI TLV 143
- LLDP Operation 144
- Clearing LLDP Counters 146
- Debugging LLDP 146
- Relevant Management Objects 147
- Port Monitoring 153
- Important Points to Remember 154
- Security 157
- AAA Accounting 158
- AAA Authentication 160
- Enabling AAA Authentication 162
- RADIUS Authentication 163
- Monitoring RADIUS 166
- TACACS+ Remote Authentication 168
- Enabling SCP and SSH 170
- Secure Shell Authentication 171
- Troubleshooting SSH 174
- Table 17. VTY Access 175
- VTY MAC-SA Filter Support 176
- Implementation Information 178
- Reading Managed Object Values 179
- Deriving Interface Indices 183
- Monitor Port-Channels 184
- Entity MIBS 185
- SNMP Traps for Link Status 186
- Standard VLAN MIB 186
- Configuration 187
- Stacking 188
- Cabling the Switch Stack 190
- Accessing the CLI 190
- Adding a Stack Unit 191
- Resetting a Unit on a Stack 192
- Using Show Commands 193
- Failure Scenarios 194
- Master Switch Fails 195
- Stack-Link Flapping Error 195
- Upgrading a Switch Stack 196
- Upgrading a Single Stack Unit 197
- Broadcast Storm Control 199
- System Time and Date 200
- Setting Daylight Savings Time 201
- Feature Description 204
- UFD and NIC Teaming 207
- Configure LLDP 218
- Enabling LLDP 219
- Advertising TLVs 219
- Figure 29. Configuring LLDP 220
- Configuring LLDPDU Intervals 222
- Configuring a Time to Live 223
- Idle Time 225
- Monitoring TACACS+ 229
- Configuring Storm Control 231
- Virtual Link Trunking (VLT) 236
- VLT Terminology 237
- Configuration Notes 238
- VLT Port Delayed Restoration 241
- Non-VLT ARP Sync 241
- VLT Bandwidth Monitoring 241
- VLT and IGMP Snooping 241
- Verifying a VLT Configuration 242
- VLT Sample Configurations 245
- Troubleshooting VLT 247
- NPIV Proxy Gateway 249
- Creating a DCB Map 254
- Creating an FCoE VLAN 256
- Creating an FCoE Map 256
- Sample Configuration 259
- Upgrade Procedures 266
- Debugging and Diagnostics 267
- Software show Commands 269
- Offline Diagnostics 270
- Trace Logs 271
- Environmental Monitoring 273
- Table 29. SNMP Traps and OIDs 275
- Buffer Tuning 276
- Deciding to Tune Buffers 278
- Troubleshooting Packet Loss 281
- Displaying Drop Counters 282
- Dataplane Statistics 283
- Power-cycling the unit(s) 286
- Standards Compliance 287
- General Internet Protocols 288
- General IPv4 Protocols 288
- Network Management 289
- MIB Location 291
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