8.3.17.0 - Force10 Networks

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www.dell.com | support.dell.com QoS Traffic Classification: On the Aggregator, the service-class dynamic dot1p command has been used in Global Configuration mode to map ingress dot1p frames to the queues shown in Table 6-6. For more information, refer to QoS dot1p Traffic Classification and Queue Assignment. Table 6-6. Example: dot1p-Queue Assignment dot1p Value in Incoming Frame Queue Assignment Lossless SAN traffic with dot1p priority 3 is assigned to queue 1. Other traffic types are assigned the 802.1p priorities shown in Table 6-7 and the bandwidth allocations shown in Table 6-8. Table 6-7. Example: dot1p-priority class group Assignment 78 | Data Center Bridging (DCB) 0 0 1 0 2 0 3 1 4 2 5 3 6 3 7 3 dot1p Value in Incoming Frame Priority Group Assignment 0 LAN 1 LAN 2 LAN 3 SAN 4 IPC 5 LAN 6 LAN 7 LAN
Table 6-8. Example: priority group-bandwidth Assignment Priority Group Bandwidth Assignment IPC 5% SAN 50% LAN 45% Hierarchical Scheduling in ETS Output Policies On an Aggregator, ETS supports up to three levels of hierarchical scheduling. For example, ETS output policies with the following configurations can be applied: • Priority group 1 assigns traffic to one priority queue with 20% of the link bandwidth and strict-priority scheduling. • Priority group 2 assigns traffic to one priority queue with 30% of the link bandwidth. • Priority group 3 assigns traffic to two priority queues with 50% of the link bandwidth and strict-priority scheduling. In this example, ETS bandwidth allocation and scheduler behavior is as follows: • Unused bandwidth usage: Normally, if there is no traffic or unused bandwidth for a priority group, the bandwidth allocated to the group is distributed to the other priority groups according to the bandwidth percentage allocated to each group. However, when three priority groups with different bandwidth allocations are used on an interface: • If priority group 3 has free bandwidth, it is distributed as follows: 20% of the free bandwidth to priority group 1 and 30% of the free bandwidth to priority group 2. • If priority group 1 or 2 has free bandwidth, (20 + 30)% of the free bandwidth is distributed to priority group 3. Priority groups 1 and 2 retain whatever free bandwidth remains up to the (20+ 30)%. • Strict-priority groups: If two priority groups have strict-priority scheduling, traffic assigned from the priority group with the higher priority-queue number is scheduled first. However, when three priority groups are used and two groups have strict-priority scheduling (such as groups 1 and 3 in the example), the strict priority group whose traffic is mapped to one queue takes precedence over the strict priority group whose traffic is mapped to two queues. Therefore, in the example, scheduling traffic to priority group 1 (mapped to one strict-priority queue) takes precedence over scheduling traffic to priority group 3 (mapped to two strict-priority queues). Data Center Bridging (DCB) | 79
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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
Page 41 and 42: Figure 4-6. Completed Boot Process
Page 43 and 44: Access the Aggregator Remotely Conf
Page 45 and 46: Dell Force10 recommends using the e
Page 47 and 48: Figure 4-10 shows an example of usi
Page 49 and 50: 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: Example: PFC and ETS Operation This
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 and 102: Figure 7-5. DHCP Client: Debug Mess
Page 103 and 104: DHCP Client on a Management Interfa
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
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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
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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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