8.3.17.0 - Force10 Networks

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www.dell.com | support.dell.com Command Syntax Command Mode Purpose 228 | System Time and Date • end-week: If you entered a start-week, enter one of the following as the week that daylight savings ends: • week-number: enter a number from 1 to 4 as the number of the week to end daylight savings time. • first: enter the keyword first to end daylight savings time in the first week of the month. • last: enter the keyword last to end daylight savings time in the last week of the month. • end-month: Enter the name of one of the 12 months in English. You can enter the name of a day to change the order of the display to time day month year. • end-day: Enter the number of the day. Range: 1 to 31. You can enter the name of a day to change the order of the display to time day month year. • end-year: Enter a four-digit number as the year. Range: 1993 to 2035. • end-time: Enter the time in hours:minutes. For the hour variable, use the 24-hour format, example, 17:15 is 5:15 pm. • offset: (OPTIONAL) Enter the number of minutes to add during the summer-time period. Range: 1 to1440. Default: 60 minutes FTOS(conf)#clock summer-time pacific recurring Mar 14 2012 00:00 Nov 7 2012 00:00 FTOS(conf)# Note: If you enter after entering the recurring command parameter, and you have already set a one-time daylight saving time/date, the system uses that time and date as the recurring setting. FTOS(conf)#clock summer-time pacific recurring ? Week number to start first Week number to start last Week number to start FTOS(conf)#clock summer-time pacific recurring FTOS(conf)#
Uplink Failure Detection (UFD) Uplink failure detection (UFD) is enabled by default on the Aggregator. Note: Uplink failure detection is also referred to as link tracking. 20 UFD provides detection of the loss of upstream connectivity and, if used with NIC teaming, automatic recovery from a failed link. An Aggregator auto-configures with UFD enabled. You can use CLI commands to display the status and configuration of uplink-state groups, and enable UFD debugging. Feature Description A switch provides upstream connectivity for devices, such as servers. If a switch loses its upstream connectivity, downstream devices also lose their connectivity. However, the devices do not receive a direct indication that upstream connectivity is lost since connectivity to the switch is still operational. UFD allows a switch to associate downstream interfaces with upstream interfaces. When upstream connectivity fails, the switch disables the downstream links. Failures on the downstream links allow downstream devices to recognize the loss of upstream connectivity. For example, in Figure 20-1 Switches S1 and S2 both have upstream connectivity to Router R1 and downstream connectivity to the server. UFD operation is shown in Steps A through C: • In Step A, the server configuration uses the connection to S1 as the primary path. Network traffic flows from the server to S1 and then upstream to R1. • In Step B, the upstream link between S1 and R1 fails. The server continues to use the link to S1 for its network traffic, but the traffic is not successfully switched through S1 because the upstream link is down. • In Step C, UFD on S1 disables the link to the server. The server then stops using the link to S1 and switches to using its link to S2 to send traffic upstream to R1. Uplink Failure Detection (UFD) | 229
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Dell PowerEdge Configuration Guide
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October 2012 | iii
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1 About this Guide . . . . . . . .
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Data Center Bridging Exchange Proto
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Displaying VLAN Membership . . . .
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Read Managed Object Values . . . .
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Troubleshooting Packet Loss . . . .
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About this Guide Objectives 1 This
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Before You Start Default Settings 2
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DCB Support DCB enhancements for da
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The untagged VLAN of a server-facin
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Configuration Fundamentals 3 The De
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Navigating CLI Modes The FTOS promp
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Figure 3-5. Undoing a command with
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Table 3-2. Short-Cut Keys and their
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Multiple Users in Configuration Mod
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Getting Started This chapter contai
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Uplink Ports Ports 33 to 56 are ext
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Step Task (continued) Note: Termina
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Figure 4-4. Completed Boot Process
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Figure 4-6. Completed Boot Process
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Access the Aggregator Remotely Conf
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Dell Force10 recommends using the e
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Figure 4-10 shows an example of usi
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To view the contents of a file, fol
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Figure 4-14. Alternative Storage Lo
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Aggregator Management This chapter
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Changing System Logging Settings Yo
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Configuring a UNIX Logging Facility
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Enabling the FTP Server To enable t
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Recovering from a Forgotten Passwor
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Figure 5-5. Recovering from a Faile
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Data Center Bridging (DCB) 6 On an
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Figure 6-1. Priority-Based Flow Con
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Data Center Bridging Exchange Proto
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QoS dot1p Traffic Classification an
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How Enhanced Transmission Selection
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DCB Policies in a Switch Stack A DC
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Note: On a DCBX port, application p
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Auto-Detection of the DCBX Version
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DCBX Error Messages An error in DCB
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Figure 6-7. show interfaces pfc sum
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Table 6-3. show interface pfc summa
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Table 6-4. show interface ets detai
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Figure 6-12. show interface dcbx de
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Example: PFC and ETS Operation This
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Table 6-8. Example: priority group-
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Skippy812 Dynamic Host Configuratio
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Assigning an IP Address Using DHCP
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Releasing and Renewing DHCP-based I
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Figure 7-5. DHCP Client: Debug Mess
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DHCP Client on a Management Interfa
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FIP Snooping 8 FIP snooping is auto
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Figure 8-1. FIP discovery and login
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The following sections describe how
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FIP Snooping Prerequisites On an Ag
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Figure 8-3. show fip-snooping sessi
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Figure 8-7. show fip-snooping stati
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Table 8-5. show fip-snooping statis
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FIP Snooping Example Figure 8-11 sh
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Internet Group Management Protocol
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IGMP Version 3 Conceptually, IGMP v
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Leaving and Staying in Groups Figur
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Figure 9-6. show ip igmp groups Com
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Interfaces 10 This chapter describe
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Viewing Interface Information You c
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Disabling and Re-enabling a Physica
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The Aggregator supports the managem
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Configuring a Static Route for a Ma
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Port-Based VLANs Port-based VLANs a
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Displaying VLAN Membership To view
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Adding an Interface to an Untagged
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Port channels can contain a mix of
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Figure 10-12. show interface port-c
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Create a Multiple-Range Figure 10-1
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Maintenance Using TDR The time doma
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MTU Size The Aggregator auto-config
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Figure 10-19. show interfaces statu
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Figure 10-21 shows the auto-negotia
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Clearing Interface Counters The cou
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iSCSI Optimization 11 An Aggregator
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If no iSCSI traffic is detected for
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Displaying iSCSI Optimization Infor
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Link Aggregation The Aggregator aut
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LACP Example Figure 12-1 shows an e
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Figure 12-3. show lacp 128 Command
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Figure 12-5. show interfaces port-c
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Layer 2 The Aggregator supports CLI
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Figure 13-1. Redundant NICs with NI
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Link Layer Discovery Protocol (LLDP
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Organizationally Specific TLVs Orga
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TIA Organizationally Specific TLVs
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LLDP-MED Network Policies TLV A net
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LLDP Operation On an Aggregator, LL
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Figure 14-10. Viewing All Informati
Page 191 and 192: Debugging LLDP The debug lldp comma
Page 193 and 194: Table 14-8. LLDP System MIB Objects
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Page 197 and 198: Port Monitoring 15 The Aggregator s
Page 199 and 200: Figure 15-2 shows ports 0/25 and 0/
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Page 203 and 204: 16 Simple Network Management Protoc
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Page 209 and 210: Use dot3aCurAggFdbTable to fetch th
Page 211 and 212: Monitor Port-channels To check the
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Page 215 and 216: Stacking Overview 17 An Aggregator
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Page 223 and 224: Resetting a Unit on a Stack Use the
Page 225 and 226: Figure 17-19. show system Command E
Page 227 and 228: Troubleshooting a Switch Stack Trou
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Page 231 and 232: Stack Unit in Card-Problem State Du
Page 233 and 234: Upgrading a Single Stack Unit Upgra
Page 235 and 236: Broadcast Storm Control 18 On the A
Page 237 and 238: System Time and Date 19 The Aggrega
Page 239 and 240: Setting the Time Zone Universal tim
Page 241: Setting Recurring Daylight Saving T
Page 245 and 246: Figure 20-2. Uplink Failure Detecti
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Page 249 and 250: Debugging UFD on an Interface To en
Page 251 and 252: Upgrade Procedures 21 To view the r
Page 253 and 254: Debugging and Diagnostics The chapt
Page 255 and 256: Broadcast, unknown multicast, and D
Page 257 and 258: Auto-configured VLANs do not exist
Page 259 and 260: Figure 22-2. show system stack-unit
Page 261 and 262: Figure 22-3. Taking a Stack Unit Of
Page 263 and 264: Table 22-2. show hardware Commands
Page 265 and 266: Recognize an Over-Temperature Condi
Page 267 and 268: The simple network management proto
Page 269 and 270: Deciding to Tune Buffers Dell Force
Page 271 and 272: Figure 22-11. Displaying Buffer Pro
Page 273 and 274: Sample Buffer Profile Configuration
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Page 277 and 278: Displaying Stack Port Statistics Th
Page 279 and 280: Figure 22-19. Mini application core
Page 281 and 282: Standards Compliance This chapter c
Page 283 and 284: General IPv4 Protocols RFC# Full Na
Page 285 and 286: Network Management (continued) RFC#
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