8.3.17.0 - Force10 Networks

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www.dell.com | support.dell.com 148 | iSCSI Optimization Figure 11-1. iSCSI Optimization Example Monitoring iSCSI Traffic Flows The switch snoops iSCSI session-establishment and termination packets by installing classifier rules that trap iSCSI protocol packets to the CPU for examination. Devices that initiate iSCSI sessions usually use well-known TCP ports 3260 or 860 to contact targets. When you enable iSCSI optimization, by default the switch identifies IP packets to or from these ports as iSCSI traffic. You can configure the switch to monitor traffic for additional port numbers or a combination of port number and target IP address, and you can remove the well-known port numbers from monitoring. Information Monitored in iSCSI Traffic Flows iSCSI optimization examines the following data in packets and uses the data to track the session and create the classifier entries that enable QoS treatment: • Initiator’s IP Address • Target’s IP Address • ISID (Initiator defined session identifier) • Initiator’s IQN (iSCSI qualified name) • Target’s IQN • Initiator’s TCP Port • Target’s TCP Port
If no iSCSI traffic is detected for a session during a user-configurable aging period, the session data is cleared. Detection and Autoconfiguration for Dell EqualLogic Arrays The iSCSI optimization feature includes auto-provisioning support with the ability to detect directly connected Dell EqualLogic storage arrays and automatically reconfigure the switch to enhance storage traffic flows. The Aggregator uses the link layer discovery protocol (LLDP) to discover Dell EqualLogic devices on the network. LLDP is enabled by default. For more information about LLDP, see Link Layer Discovery Protocol (LLDP). The following message is displayed the first time a Dell EqualLogic array is detected and describes the configuration changes that are automatically performed: %STKUNIT0-M:CP %IFMGR-5-IFM_ISCSI_AUTO_CONFIG: This switch is being configured for optimal conditions to support iSCSI traffic which will cause some automatic configuration to occur including jumbo frames and flow-control on all ports; no storm control to be enabled on the port of detection. The following syslog message is generated the first time an EqualLogic array is detected: %STKUNIT0-M:CP %LLDP-5-LLDP_EQL_DETECTED: EqualLogic Storage Array detected on interface Te 1/43 • At the first detection of an EqualLogic array, an MTU of 12000 is enabled on all ports and port-channels (if it is has not already been enabled). • Spanning-tree portfast is enabled on the interface identified by LLDP if the port is in L2 mode. • Unicast storm control is disabled on the interface identified by LLDP. Detection and Port Configuration for Dell Compellent Arrays An Aggregator auto-configures a port connected to a Dell Compellent storage array for the best iSCSI traffic conditions. The following message is displayed the first time a Dell Compellent array is detected and describes the configuration changes that are automatically performed: %STKUNIT0-M:CP %IFMGR-5-IFM_ISCSI_AUTO_CONFIG: This switch is being configured for optimal conditions to support iSCSI traffic which will cause some automatic configuration to occur including jumbo frames and flow-control on all ports; no storm control to be enabled on the port of detection. iSCSI Optimization | 149
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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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Page 117 and 118: Table 8-5. show fip-snooping statis
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Page 125 and 126: Leaving and Staying in Groups Figur
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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
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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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Page 157 and 158: Figure 10-21 shows the auto-negotia
Page 159 and 160: Clearing Interface Counters The cou
Page 161: iSCSI Optimization 11 An Aggregator
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Page 169 and 170: LACP Example Figure 12-1 shows an e
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Page 183 and 184: TIA Organizationally Specific TLVs
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Page 191 and 192: Debugging LLDP The debug lldp comma
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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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