8.3.17.0 - Force10 Networks

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www.dell.com | support.dell.com Figure 7-6 shows an example of the packet- and event-level debug messages displayed for the packet transmissions and state transitions on a DHCP client interface when you release and renew a DHCP client. Figure 7-6. DHCP Client: Debug Messages Logged during DHCP Client Release/Renew FTOS# release dhcp interface managementethernet 0/0 May 27 15:55:22: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT: Interface Ma 0/0 : DHCP RELEASE CMD Received in state BOUND May 27 15:55:22: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_PKT: DHCP RELEASE sent in Interface Ma 0/0 May 27 15:55:22: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT: Interface Ma 0/0 : Transitioned to state STOPPED May 27 15:55:22: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT: Interface Ma 0/0 : DHCP IP RELEASED CMD sent to FTOS in state STOPPED FTOS# renew dhcp interface tengigabitethernet 0/1 FTOS#May 27 15:55:28: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT: Interface Ma 0/0 : DHCP RENEW CMD Received in state STOPPED May 27 15:55:31: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT: Interface Ma 0/0 : Transitioned to state SELECTING May 27 15:55:31: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_PKT: DHCP DISCOVER sent in Interface Ma 0/0 May 27 15:55:31: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_PKT: Received DHCPOFFER packet in Interface Ma 0/0 with Lease-Ip:10.16.134.250, Mask:255.255.0.0,Server-Id:10.16.134.249 How DHCP Client is Implemented The Aggregator is enabled by default to receive DHCP server-assigned dynamic IP addresses on an interface. This setting persists after a switch reboot. If you enter the shutdown command on the interface, DHCP transactions are stopped and the dynamically-acquired IP address is saved. Use the show interface type slot/port command to display the dynamic IP address and DHCP as the mode of IP address assignment. If you later enter the no shutdown command and the lease timer for the dynamic IP address has expired, the IP address is unconfigured and the interface tries to acquire a new dynamic address from DHCP server. If you later enter the no shutdown command and the lease timer for the dynamic IP address has expired, the IP address is released. When you enter the release dhcp command, although the IP address that was dynamically-acquired from a DHCP server is released from an interface, the ability to acquire a new DHCP server-assigned address remains in the running configuration for the interface. To acquire a new IP address, enter either the renew dhcp command at the EXEC privilege level or the ip address dhcp command at the interface configuration level. If you enter renew dhcp command on an interface already configured with a dynamic IP address, the lease time of the dynamically acquired IP address is renewed. Important: To verify the currently configured dynamic IP address on an interface, enter the show ip dhcp lease command. The show running-configuration command output only displays ip address dhcp; the currently assigned dynamic IP address is not displayed. 88 | Dynamic Host Configuration Protocol (DHCP)
DHCP Client on a Management Interface The following conditions apply on a management interface that operates as a DHCP client: • The management default route is added with the gateway as the router IP address received in the DHCP ACK packet. This is required to send and receive traffic to and from other subnets on the external network. This route is added irrespective both when the DHCP client and server are in the same or different subnets. The management default route is deleted if the management IP address is released like other management routes added by the DHCP client. • If "ip route for 0.0.0.0" is present or added later, it will take precedence. • Management routes added by a DHCP client are displayed with Route Source as DHCP in show ip management route and show ip management-route dynamic command output. • If a static IP route configured with the ip route command replaces a management route added by the DHCP client and then if the statically-configured IP route is removed (no ip route command), the management route added by DHCP is automatically re-installed. The management routes added by the DHCP client must be manually deleted. • If a management route added by the DHCP client is removed or replaced by the same statically-configured management route, it is not re-installed unless you release the DHCP IP address and renew it on the management interface. • A management route added by the DHCP client has higher precedence over the same statically-configured management route. If a dynamically-acquired management route added by the DHCP client overwrites a static management route, the static route is not removed from the running configuration. • Management routes added by the DHCP client are not added to the running configuration. Note: Management routes added by the DHCP client include the specific routes to reach a DHCP server in a different subnet and the default management route. Dynamic Host Configuration Protocol (DHCP) | 89
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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
Page 51 and 52: Figure 4-14. Alternative Storage Lo
Page 53 and 54: Aggregator Management This chapter
Page 55 and 56: Changing System Logging Settings Yo
Page 57 and 58: Configuring a UNIX Logging Facility
Page 59 and 60: Enabling the FTP Server To enable t
Page 61 and 62: Recovering from a Forgotten Passwor
Page 63 and 64: Figure 5-5. Recovering from a Faile
Page 65 and 66: Data Center Bridging (DCB) 6 On an
Page 67 and 68: Figure 6-1. Priority-Based Flow Con
Page 69 and 70: Data Center Bridging Exchange Proto
Page 71 and 72: QoS dot1p Traffic Classification an
Page 73 and 74: How Enhanced Transmission Selection
Page 75 and 76: DCB Policies in a Switch Stack A DC
Page 77 and 78: Note: On a DCBX port, application p
Page 79 and 80: Auto-Detection of the DCBX Version
Page 81 and 82: DCBX Error Messages An error in DCB
Page 83 and 84: Figure 6-7. show interfaces pfc sum
Page 85 and 86: Table 6-3. show interface pfc summa
Page 87 and 88: Table 6-4. show interface ets detai
Page 89 and 90: Figure 6-12. show interface dcbx de
Page 91 and 92: Example: PFC and ETS Operation This
Page 93 and 94: Table 6-8. Example: priority group-
Page 95 and 96: Skippy812 Dynamic Host Configuratio
Page 97 and 98: Assigning an IP Address Using DHCP
Page 99 and 100: Releasing and Renewing DHCP-based I
Page 101: Figure 7-5. DHCP Client: Debug Mess
Page 105 and 106: FIP Snooping 8 FIP snooping is auto
Page 107 and 108: Figure 8-1. FIP discovery and login
Page 109 and 110: The following sections describe how
Page 111 and 112: FIP Snooping Prerequisites On an Ag
Page 113 and 114: Figure 8-3. show fip-snooping sessi
Page 115 and 116: Figure 8-7. show fip-snooping stati
Page 117 and 118: Table 8-5. show fip-snooping statis
Page 119 and 120: FIP Snooping Example Figure 8-11 sh
Page 121 and 122: Internet Group Management Protocol
Page 123 and 124: IGMP Version 3 Conceptually, IGMP v
Page 125 and 126: Leaving and Staying in Groups Figur
Page 127 and 128: Figure 9-6. show ip igmp groups Com
Page 129 and 130: Interfaces 10 This chapter describe
Page 131 and 132: Viewing Interface Information You c
Page 133 and 134: Disabling and Re-enabling a Physica
Page 135 and 136: The Aggregator supports the managem
Page 137 and 138: Configuring a Static Route for a Ma
Page 139 and 140: Port-Based VLANs Port-based VLANs a
Page 141 and 142: Displaying VLAN Membership To view
Page 143 and 144: Adding an Interface to an Untagged
Page 145 and 146: Port channels can contain a mix of
Page 147 and 148: Figure 10-12. show interface port-c
Page 149 and 150: Create a Multiple-Range Figure 10-1
Page 151 and 152: 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
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Debugging LLDP The debug lldp comma
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Table 14-8. LLDP System MIB Objects
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Table 14-10. LLDP-MED System MIB Ob
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Port Monitoring 15 The Aggregator s
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Figure 15-2 shows ports 0/25 and 0/
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In Figure 15-4, the host and server
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16 Simple Network Management Protoc
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Dell Force10 supports RFC 4001, Tex
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Figure 16-6 shows the output for an
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Use dot3aCurAggFdbTable to fetch th
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Monitor Port-channels To check the
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The status of the MIBS is as follow
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Stacking Overview 17 An Aggregator
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Stack Master Election The stack ele
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Stacking Port Numbers By default, e
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Cabling Procedure The following cab
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Resetting a Unit on a Stack Use the
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Figure 17-19. show system Command E
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Troubleshooting a Switch Stack Trou
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Figure 17-27. show hardware stack-u
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Stack Unit in Card-Problem State Du
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Upgrading a Single Stack Unit Upgra
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Broadcast Storm Control 18 On the A
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System Time and Date 19 The Aggrega
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Setting the Time Zone Universal tim
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Setting Recurring Daylight Saving T
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Uplink Failure Detection (UFD) Upli
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Figure 20-2. Uplink Failure Detecti
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Show Command Syntax Description sho
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Debugging UFD on an Interface To en
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Upgrade Procedures 21 To view the r
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Debugging and Diagnostics The chapt
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Broadcast, unknown multicast, and D
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Auto-configured VLANs do not exist
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Figure 22-2. show system stack-unit
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Figure 22-3. Taking a Stack Unit Of
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Table 22-2. show hardware Commands
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Recognize an Over-Temperature Condi
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The simple network management proto
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Deciding to Tune Buffers Dell Force
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Figure 22-11. Displaying Buffer Pro
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Sample Buffer Profile Configuration
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Figure 22-14. Displaying Buffer Sta
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Displaying Stack Port Statistics Th
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Figure 22-19. Mini application core
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Standards Compliance This chapter c
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General IPv4 Protocols RFC# Full Na
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Network Management (continued) RFC#
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