Dell S6000–ON - BFD Packet Format

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NOTE: A session state change from Up to Down is the only state change that triggers a link state

change in the routing protocol client.

BFD Packet Format

Control packets are encapsulated in user datagram protocol (UDP) packets. The following illustration

shows the complete encapsulation of a BFD control packet inside an IPv4 packet.

Figure 9. BFD in IPv4 Packet Format

Field Description

Diagnostic Code The reason that the last session failed.

State The current local session state. Refer to BFD Sessions.

Flag A bit that indicates packet function. If the poll bit is set, the receiving system must

respond as soon as possible, without regard to its transmit interval. The responding

128

Bidirectional Forwarding Detection (BFD)

Main Page

Default Chapter3
- Table of Contents3
About this Guide34
- Audience34
- Conventions34
- Related Documents34
Configuration Fundamentals35
- Accessing the Command Line35
- CLI Modes35
  - Navigating CLI Modes37
- The Do Command40
- Undoing Commands41
- Obtaining Help41
- Entering and Editing Commands42
- Command History43
- Filtering Show Command Outputs43
- Multiple Users in Configuration Mode44
Getting Started45
- Console Access45
  - Serial Console45
- Default Configuration46
- Configuring a Host Name46
- Accessing the System Remotely47
- Configuring the Enable Password48
- Configuration File Management49
- Managing the File System53
- View Command History54
- Upgrading Dell Networking os54
- Using HTTP for File Transfers54
- Using Hashes to Verify Software Images before Installation55
Management57
- Configuring Privilege Levels57
- Configuring Logging60
- Log Messages in the Internal Buffer64
  - Configuration Task List for System Log Management64
- Disabling System Logging64
- Sending System Messages to a Syslog Server65
  - Configuring a UNIX System as a Syslog Server65
- Track Login Activity65
- Limit Concurrent Login Sessions67
- Changing System Logging Settings69
- Display the Logging Buffer and the Logging Configuration70
- Configuring a UNIX Logging Facility Level70
- Synchronizing Log Messages72
- Enabling Timestamp on Syslog Messages72
- File Transfer Services73
- Terminal Lines75
  - Denying and Permitting Access to a Terminal Line75
  - Configuring Login Authentication for Terminal Lines76
- Setting Timeout for EXEC Privilege Mode77
- Using Telnet to Get to Another Network Device78
- Lock CONFIGURATION Mode78
  - Viewing the Configuration Lock Status79
- Restoring the Factory Default Settings79
  - Important Points to Remember79
  - Restoring Factory Default Environment Variables80
802.1X82
- Port-Authentication Process83
  - EAP over RADIUS85
- Configuring 802.1X85
  - Related Configuration Tasks85
- Important Points to Remember86
- Enabling 802.1X86
- Configuring Request Identity Re-Transmissions88
  - Configuring a Quiet Period after a Failed Authentication88
- Forcibly Authorizing or Unauthorizing a Port89
- Re-Authenticating a Port90
- Configuring Timeouts91
- Configuring Dynamic VLAN Assignment with Port Authentication92
- Guest and Authentication-Fail Vlans93
  - Configuring a Guest VLAN94
  - Configuring an Authentication-Fail VLAN94
Access Control Lists (Acls)96
- IP Access Control Lists (Acls)96
  - CAM Usage97
  - Implementing Acls on Dell Networking os98
- Important Points to Remember99
- IP Fragment Handling106
  - IP Fragments ACL Examples106
  - Layer 4 ACL Rules Examples107
- Configure a Standard IP ACL108
  - Configuring a Standard IP ACL Filter109
- Configure an Extended IP ACL110
  - Configuring Filters with a Sequence Number110
  - Configuring Filters Without a Sequence Number111
- Configure Layer 2 and Layer 3 Acls112
- Assign an IP ACL to an Interface113
- Applying an IP ACL113
  - Counting ACL Hits114
- Configure Ingress Acls114
- Configure Egress Acls115
  - Applying Egress Layer 3 Acls (Control-Plane)116
- IP Prefix Lists116
  - Implementation Information117
  - Configuration Task List for Prefix Lists117
- ACL Resequencing121
  - Resequencing an ACL or Prefix List121
- Route Maps123
  - Implementation Information123
- Flow-Based Monitoring Support for Acls123
  - Behavior of Flow-Based Monitoring123
  - Enabling Flow-Based Monitoring125
Bidirectional Forwarding Detection (BFD)127
- How BFD Works127
- Important Points to Remember132
- Configure BFD132
Border Gateway Protocol Ipv4 (Bgpv4)157
- Autonomous Systems (AS)157
- Sessions and Peers159
  - Establish a Session160
- Route Reflectors160
- BGP Attributes161
- Multiprotocol BGP168
- Implement BGP with Dell Networking os168
- Configuration Information174
- BGP Configuration174
- Enabling MBGP Configurations210
- BGP Regular Expression Optimization211
- Debugging BGP211
- Sample Configurations214
Content Addressable Memory (CAM)221
- CAM Allocation221
- Test CAM Usage223
- View CAM Profiles223
- View CAM-ACL Settings224
- View CAM Usage226
- CAM Optimization227
- Troubleshoot CAM Profiling227
- Unified Forwarding Table (UFT) Modes228
  - Configuring UFT Modes228
Control Plane Policing (Copp)230
- Configure Control Plane Policing231
Data Center Bridging (DCB)237
- Ethernet Enhancements in Data Center Bridging237
  - Priority-Based Flow Control238
  - Enhanced Transmission Selection240
  - Data Center Bridging Exchange Protocol (Dcbx)241
  - Data Center Bridging in a Traffic Flow241
- Enabling Data Center Bridging242
  - DCB Maps and Its Attributes242
- Data Center Bridging: Default Configuration243
- Configuring Priority-Based Flow Control244
  - Configuring Lossless Queues245
- Configuring PFC in a DCB Map246
  - PFC Configuration Notes246
  - PFC Prerequisites and Restrictions247
- Applying a DCB Map on a Port248
- Configuring PFC Without a DCB Map248
  - Configuring Lossless Queuesexample249
- Priority-Based Flow Control Using Dynamic Buffer Method250
  - Pause and Resume of Traffic251
  - Buffer Sizes for Lossless or PFC Packets251
- Behavior of Tagged Packets252
- Configuration Example for DSCP and PFC Priorities252
- SNMP Support for PFC and Buffer Statistics Tracking253
- Performing PFC Using DSCP Bits Instead of 802.1P Bits254
- PFC and ETS Configuration Examples255
- Using PFC to Manage Converged Ethernet Traffic255
- Operations on Untagged Packets255
- Generation of PFC for a Priority for Untagged Packets255
- Configure Enhanced Transmission Selection256
  - ETS Prerequisites and Restrictions256
  - Creating an ETS Priority Group256
  - ETS Operation with Dcbx257
  - Configuring Bandwidth Allocation for Dcbx CIN258
  - Configuring ETS in a DCB Map259
- Hierarchical Scheduling in ETS Output Policies260
- Using ETS to Manage Converged Ethernet Traffic261
- Applying DCB Policies in a Switch Stack261
- Configure a Dcbx Operation261
  - Dcbx Operation262
  - Dcbx Port Roles262
  - DCB Configuration Exchange264
  - Configuration Source Election264
  - Propagation of DCB Information265
  - Auto-Detection and Manual Configuration of the Dcbx Version265
  - Dcbx Example266
  - Dcbx Prerequisites and Restrictions266
  - Configuring Dcbx266
- Verifying the DCB Configuration270
- Qos Dot1P Traffic Classification and Queue Assignment281
- Configuring the Dynamic Buffer Method282
- Sample DCB Configuration283
  - PFC and ETS Configuration Command Examples285
Dynamic Host Configuration Protocol (DHCP)286
- DHCP Packet Format and Options286
- Assign an IP Address Using DHCP288
- Implementation Information289
- Configure the System to be a DHCP Server289
- Configure the System to be a DHCP Client293
- Configure the System for User Port Stacking (Option 230)297
- Configure Secure DHCP297
- Source Address Validation304
Equal Cost Multi-Path (ECMP)308
- ECMP for Flow-Based Affinity308
- Link Bundle Monitoring309
Fcoe Transit313
- Fibre Channel over Ethernet313
- Ensure Robustness in a Converged Ethernet Network313
- FIP Snooping on Ethernet Bridges315
- FIP Snooping in a Switch Stack317
- Using FIP Snooping317
- Displaying FIP Snooping Information321
- Fcoe Transit Configuration Example327
Flex Hash and Optimized Boot-Up329
- Flex Hash Capability Overview329
- Configuring the Flex Hash Mechanism329
- Configuring Fast Boot and LACP Fast Switchover330
- Optimizing the Boot Time330
  - Booting Process When Optimized Boot Time Mechanism Is Enabled331
  - Guidelines for Configuring Optimized Booting Mechanism331
- Interoperation of Applications with Fast Boot and System States332
- RDMA over Converged Ethernet (Roce) Overview335
- Preserving 802.1Q VLAN Tag Value for Lite Subinterfaces336
Force10 Resilient Ring Protocol (FRRP)337
- Protocol Overview337
- Implementing FRRP342
- FRRP Configuration342
- Troubleshooting FRRP347
  - Configuration Checks347
- Sample Configuration and Topology347
GARP VLAN Registration Protocol (GVRP)349
- Important Points to Remember349
- Configure GVRP350
  - Related Configuration Tasks350
- Enabling GVRP Globally351
- Enabling GVRP on a Layer 2 Interface351
- Configure GVRP Registration351
- Configure a GARP Timer352
Internet Group Management Protocol (IGMP)354
- IGMP Implementation Information354
- IGMP Protocol Overview354
  - IGMP Version 2354
  - IGMP Version 3356
- Configure IGMP359
  - Related Configuration Tasks359
- Viewing IGMP Enabled Interfaces360
- Selecting an IGMP Version360
- Viewing IGMP Groups361
- Adjusting Timers361
  - Adjusting Query and Response Timers361
- Enabling IGMP Immediate-Leave362
- IGMP Snooping362
- Fast Convergence after MSTP Topology Changes365
- Egress Interface Selection (EIS) for HTTP and IGMP Applications365
- Designating a Multicast Router Interface374
Interfaces375
- Basic Interface Configuration375
- Advanced Interface Configuration375
- Interface Types376
- View Basic Interface Information376
- Resetting an Interface to Its Factory Default State378
- Enabling a Physical Interface379
- Physical Interfaces379
  - Configuration Task List for Physical Interfaces379
  - 40G to 1G Breakout Cable Adaptor380
  - Overview of Layer Modes380
  - Configuring Layer 2 (Data Link) Mode381
  - Configuring Layer 2 (Interface) Mode381
  - Configuring Layer 3 (Network) Mode381
- Configuring Layer 3 (Interface) Mode382
- Egress Interface Selection (EIS)383
  - Important Points to Remember383
  - Configuring EIS383
- Management Interfaces384
  - Configuring Management Interfaces384
  - Configuring a Management Interface on an Ethernet Port386
- VLAN Interfaces387
- Loopback Interfaces387
- Null Interfaces388
- Port Channel Interfaces388
  - Port Channel Definition and Standards388
  - Port Channel Benefits389
  - Port Channel Implementation389
  - Interfaces in Port Channels389
  - Configuration Tasks for Port Channel Interfaces390
  - Creating a Port Channel390
  - Adding a Physical Interface to a Port Channel390
  - Reassigning an Interface to a New Port Channel392
  - Configuring the Minimum Oper up Links in a Port Channel393
  - Adding or Removing a Port Channel from a VLAN393
  - Assigning an IP Address to a Port Channel395
  - Deleting or Disabling a Port Channel395
  - Load Balancing through Port Channels395
  - Changing the Hash Algorithm395
- Bulk Configuration397
  - Interface Range397
  - Bulk Configuration Examples397
- Defining Interface Range Macros399
  - Define the Interface Range399
  - Choosing an Interface-Range Macro399
- Monitoring and Maintaining Interfaces399
  - Maintenance Using TDR401
- Fanning out 40G Ports Dynamically401
- Splitting QSFP Ports to SFP+ Ports402
- Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port403
  - Important Points to Remember404
  - Example Scenarios404
- Link Dampening406
  - Important Points to Remember406
  - Enabling Link Dampening406
- Link Bundle Monitoring408
  - Using Ethernet Pause Frames for Flow Control408
    - Enabling Pause Frames409
  - Configure the MTU Size on an Interface409
  - Port-Pipes410
  - Auto-Negotiation on Ethernet Interfaces411
    - Setting the Speed and Duplex Mode of Ethernet Interfaces411
    - Set Auto-Negotiation Options412
  - View Advanced Interface Information413
    - Configuring the Interface Sampling Size414
  - Dynamic Counters415
    - Clearing Interface Counters416
  - Compressing Configuration Files416
Ipv4 Routing420
- IP Addresses420
  - Implementation Information420
- Configuration Tasks for IP Addresses421
- Assigning IP Addresses to an Interface421
- Configuring Static Routes422
- Configure Static Routes for the Management Interface423
- Using the Configured Source IP Address in ICMP Messages423
  - Configuring the ICMP Source Interface424
- Configuring the Duration to Establish a TCP Connection424
- Enabling Directed Broadcast425
- Resolution of Host Names425
- Enabling Dynamic Resolution of Host Names425
- Specifying the Local System Domain and a List of Domains426
- Configuring DNS with Traceroute426
- Arp427
- Configuration Tasks for ARP427
- Configuring Static ARP Entries428
- Enabling Proxy ARP428
- Clearing ARP Cache429
- ARP Learning Via Gratuitous ARP429
- Enabling ARP Learning Via Gratuitous ARP429
- ARP Learning Via ARP Request430
- Configuring ARP Retries430
- Icmp431
- Configuration Tasks for ICMP431
- Enabling ICMP Unreachable Messages431
- UDP Helper432
  - Configure UDP Helper432
  - Important Points to Remember432
- Enabling UDP Helper432
- Configuring a Broadcast Address433
- Configurations Using UDP Helper433
- UDP Helper with Broadcast-All Addresses433
- UDP Helper with Subnet Broadcast Addresses434
- UDP Helper with Configured Broadcast Addresses435
- UDP Helper with no Configured Broadcast Addresses435
- Troubleshooting UDP Helper436
Ipv6 Routing437
- Protocol Overview437
- Implementing Ipv6 with Dell Networking os444
- Icmpv6446
- Path MTU Discovery446
- Ipv6 Neighbor Discovery447
- Secure Shell (SSH) over an Ipv6 Transport450
- Configuration Tasks for Ipv6450
- Configuring Ipv6 RA Guard457
  - Configuring Ipv6 RA Guard on an Interface459
  - Monitoring Ipv6 RA Guard459
Iscsi Optimization460
- Iscsi Optimization Overview460
- Default Iscsi Optimization Values465
- Iscsi Optimization Prerequisites466
- Configuring Iscsi Optimization466
- Displaying Iscsi Optimization Information468
Intermediate System to Intermediate System470
- IS-IS Protocol Overview470
- IS-IS Addressing470
- Multi-Topology IS-IS471
- Graceful Restart472
  - Timers472
- Implementation Information473
- Configuration Information474
- IS-IS Metric Styles490
- Configure Metric Values490
- Sample Configurations493
Link Aggregation Control Protocol (LACP)496
- Introduction to Dynamic Lags and LACP496
- LACP Configuration Tasks498
- Shared LAG State Tracking500
  - Configuring Shared LAG State Tracking501
  - Important Points about Shared LAG State Tracking502
- LACP Basic Configuration Example503
  - Configure a LAG on ALPHA503
Layer 2511
- Manage the MAC Address Table511
- MAC Learning Limit512
- NIC Teaming516
- Configure Redundant Pairs517
  - Important Points about Configuring Redundant Pairs519
- Far-End Failure Detection520
Link Layer Discovery Protocol (LLDP)526
- 802.1AB (LLDP) Overview526
  - Protocol Data Units526
- Optional Tlvs527
  - Management Tlvs527
- TIA-1057 (LLDP-MED) Overview529
  - TIA Organizationally Specific Tlvs530
- Configure LLDP534
- CONFIGURATION Versus INTERFACE Configurations535
- Enabling LLDP536
  - Disabling and Undoing LLDP536
- Enabling LLDP on Management Ports536
  - Disabling and Undoing LLDP on Management Ports536
- Advertising Tlvs537
- Viewing the LLDP Configuration538
- Viewing Information Advertised by Adjacent LLDP Agents539
- Configuring LLDPDU Intervals540
- Configuring Transmit and Receive Mode540
- Configuring the Time to Live Value541
- Debugging LLDP542
- Relevant Management Objects543
Microsoft Network Load Balancing549
- NLB Unicast Mode Scenario549
- NLB Multicast Mode Scenario550
- Limitations of the NLB Feature550
- Microsoft Clustering550
- Enable and Disable VLAN Flooding551
- Configuring a Switch for NLB551
  - Enabling a Switch for Multicast NLB551
Multicast Source Discovery Protocol (MSDP)553
- Protocol Overview553
- Anycast RP555
- Implementation Information555
- Configure Multicast Source Discovery Protocol555
  - Related Configuration Tasks555
- Enable MSDP559
- Manage the Source-Active Cache560
- Accept Source-Active Messages that Fail the RFP Check561
- Specifying Source-Active Messages565
- Limiting the Source-Active Messages from a Peer566
- Preventing MSDP from Caching a Local Source566
- Preventing MSDP from Caching a Remote Source567
- Preventing MSDP from Advertising a Local Source568
- Logging Changes in Peership States568
- Terminating a Peership569
- Clearing Peer Statistics569
- Debugging MSDP570
- MSDP with Anycast RP570
- Configuring Anycast RP571
  - Reducing Source-Active Message Flooding572
  - Specifying the RP Address Used in SA Messages572
- MSDP Sample Configurations575
Multiple Spanning Tree Protocol (MSTP)578
- Protocol Overview578
- Spanning Tree Variations579
  - Implementation Information579
- Configure Multiple Spanning Tree Protocol579
  - Related Configuration Tasks579
- Enable Multiple Spanning Tree Globally580
- Adding and Removing Interfaces580
- Creating Multiple Spanning Tree Instances580
- Influencing MSTP Root Selection582
- Interoperate with Non-Dell Bridges582
- Changing the Region Name or Revision583
- Modifying Global Parameters583
- Modifying the Interface Parameters584
- Configuring an Edgeport585
- Flush MAC Addresses after a Topology Change586
- MSTP Sample Configurations586
  - Router 1 Running-Configurationrouter 2 Running-Configurationrouter 3 Running-Configurationsftos Example Running-Configuration587
- Debugging and Verifying MSTP Configurations590
Multicast Features593
- Enabling IP Multicast593
- Implementation Information593
- Multicast Policies594
  - Ipv4 Multicast Policies594
Object Tracking602
- Object Tracking Overview602
- Object Tracking Configuration605
- Displaying Tracked Objects612
Open Shortest Path First (Ospfv2 and Ospfv3)614
- Protocol Overview614
- OSPF with Dell Networking os620
- Configuration Information625
  - Configuration Task List for Ospfv2 (OSPF for Ipv4)625
- Configuration Task List for Ospfv3 (OSPF for Ipv6)641
Policy-Based Routing (PBR)657
- Overview657
- Implementing Policy-Based Routing with Dell Networking os658
- Configuration Task List for Policy-Based Routing659
- Sample Configuration664
PIM Sparse-Mode (PIM-SM)666
- Implementation Information666
- Protocol Overview666
- Configuring PIM-SM668
  - Related Configuration Tasks668
- Enable PIM-SM668
- Configuring S,G Expiry Timers669
- Configuring a Static Rendezvous Point670
  - Overriding Bootstrap Router Updates670
- Configuring a Designated Router671
- Creating Multicast Boundaries and Domains671
PIM Source-Specific Mode (PIM-SSM)673
- Implementation Information673
  - Important Points to Remember673
- Configure PIM-SSM674
  - Related Configuration Tasks674
- Enabling PIM-SSM674
- Use PIM-SSM with IGMP Version 2 Hosts674
  - Configuring PIM-SSM with Igmpv2675
Port Monitoring677
- Important Points to Remember677
- Port Monitoring678
- Configuring Port Monitoring679
- Configuring Monitor Multicast Queue681
- Enabling Flow-Based Monitoring682
- Remote Port Mirroring683
- Encapsulated Remote Port Monitoring690
  - Changes to Default Behaviorconfiguration Steps for ERPM690
- ERPM Behavior on a Typical Dell Networking os692
  - Decapsulation of ERPM Packets at the Destination IP/ Analyzer692
Per-VLAN Spanning Tree Plus (PVST+)694
- Protocol Overview694
- Implementation Information695
- Configure Per-VLAN Spanning Tree Plus695
  - Related Configuration Tasks695
- Enabling PVST695
- Disabling PVST696
- Influencing PVST+ Root Selection696
- Modifying Global PVST+ Parameters698
- Modifying Interface PVST+ Parameters699
- Configuring an Edgeport700
- PVST+ in Multi-Vendor Networks700
- Enabling PVST+ Extend System ID701
- PVST+ Sample Configurations702
Quality of Service (Qos)704
- Implementation Information706
- Port-Based Qos Configurations706
- Policy-Based Qos Configurations710
- Enabling Qos Rate Adjustment723
- Enabling Strict-Priority Queueing724
- Queue Classification Requirements for PFC Functionality724
- Support for Marking Dot1P Value in L3 Input Qos Policy725
- Weighted Random Early Detection726
- Pre-Calculating Available Qos CAM Space728
- Specifying Policy-Based Rate Shaping in Packets Per Second729
- Configuring Policy-Based Rate Shaping730
- Configuring Weights and ECN for WRED731
  - Global Service Pools with WRED and ECN Settings732
- Configuring WRED and ECN Attributes733
- Guidelines for Configuring ECN for Classifying and Color-Marking Packets734
- Applying Layer 2 Match Criteria on a Layer 3 Interface738
  - Managing Hardware Buffer Statistics739
- Enabling Buffer Statistics Tracking739
Routing Information Protocol (RIP)742
- Protocol Overview742
  - Ripv1742
  - Ripv2742
- Implementation Information743
- Configuration Information743
  - Configuration Task List743
  - RIP Configuration Example750
Remote Monitoring (RMON)756
- Implementation Information756
- Fault Recovery756
Rapid Spanning Tree Protocol (RSTP)760
- Protocol Overview760
- Configuring Rapid Spanning Tree760
  - Related Configuration Tasks760
- Important Points to Remember761
  - RSTP and VLT761
- Configuring Interfaces for Layer 2 Mode761
- Enabling Rapid Spanning Tree Protocol Globally762
- Adding and Removing Interfaces764
- Modifying Global Parameters765
  - Enabling SNMP Traps for Root Elections and Topology Changes766
- Modifying Interface Parameters766
- Enabling SNMP Traps for Root Elections and Topology Changes767
- Influencing RSTP Root Selection767
- Configuring an Edgeport767
- Configuring Fast Hellos for Link State Detection768
Software-Defined Networking (SDN)770
Security771
- AAA Accounting771
  - Configuration Task List for AAA Accounting771
- AAA Authentication773
  - Configuration Task List for AAA Authentication774
- Obscuring Passwords and Keys776
- AAA Authorization777
  - Privilege Levels Overview777
  - Configuration Task List for Privilege Levels777
- Radius781
  - RADIUS Authentication782
  - Configuration Task List for RADIUS783
- Tacacs786
- Protection from TCP Tiny and Overlapping Fragment Attacks789
- Enabling SCP and SSH789
- Telnet797
- VTY Line and Access-Class Configuration797
- Role-Based Access Control799
Service Provider Bridging812
- VLAN Stacking812
- VLAN Stacking Packet Drop Precedence820
- Dynamic Mode Cos for VLAN Stacking822
  - Mapping C-Tag to S-Tag Dot1P Values824
- Layer 2 Protocol Tunneling824
- Provider Backbone Bridging828
Sflow829
- Overview829
- Implementation Information829
  - Important Points to Remember830
- Enabling Extended Sflow830
- Enabling and Disabling Sflow on an Interface831
- Enabling Sflow Max-Header Size Extended831
- Sflow Show Commands833
- Configuring Specify Collectors834
- Changing the Polling Intervals834
- Back-Off Mechanism835
- Sflow on LAG Ports835
- Enabling Extended Sflow835
  - Important Points to Remember836
Simple Network Management Protocol (SNMP)838
- Protocol Overview838
- Implementation Information838
- Snmpv3 Compliance with FIPS838
- Configuration Task List for SNMP840
  - Related Configuration Tasks840
- Important Points to Remember840
- Set up SNMP840
  - Creating a Community841
  - Setting up User-Based Security (Snmpv3)841
- Reading Managed Object Values842
- Writing Managed Object Values843
- Configuring Contact and Location Information Using SNMP844
- Subscribing to Managed Object Value Updates Using SNMP845
- Enabling a Subset of SNMP Traps846
- Enabling an SNMP Agent to Notify Syslog Server Failure848
- Copy Configuration Files Using SNMP849
  - Copying a Configuration File851
  - Copying Configuration Files Via SNMP851
  - Copying the Startup-Config Files to the Running-Config852
  - Copying the Startup-Config Files to the Server Via FTP852
  - Copying the Startup-Config Files to the Server Via TFTP853
  - Copy a Binary File to the Startup-Configuration853
  - Additional MIB Objects to View Copy Statistics854
  - Obtaining a Value for MIB Objects854
- MIB Support to Display the Available Memory Size on Flash855
  - Viewing the Available Flash Memory Size855
- MIB Support to Display the Software Core Files Generated by the System856
  - Viewing the Software Core Files Generated by the System856
- Manage Vlans Using SNMP857
  - Creating a VLAN857
  - Assigning a VLAN Alias857
  - Displaying the Ports in a VLAN858
  - Add Tagged and Untagged Ports to a VLAN858
- Managing Overload on Startup859
- Enabling and Disabling a Port Using SNMP859
- Fetch Dynamic MAC Entries Using SNMP860
- Deriving Interface Indices861
- Monitor Port-Channels862
- Troubleshooting SNMP Operation864
Storm Control865
- Configure Storm Control865
  - Configuring Storm Control from INTERFACE Mode865
  - Configuring Storm Control from CONFIGURATION Mode866
Spanning Tree Protocol (STP)867
- Protocol Overview867
- Configure Spanning Tree867
  - Related Configuration Tasks867
- Important Points to Remember868
- Configuring Interfaces for Layer 2 Mode868
- Enabling Spanning Tree Protocol Globally869
- Adding an Interface to the Spanning Tree Group871
- Modifying Global Parameters872
- Modifying Interface STP Parameters873
- Enabling Portfast873
  - Prevent Network Disruptions with BPDU Guard874
- Selecting STP Root876
- STP Root Guard877
  - Root Guard Scenario877
  - Configuring Root Guard878
- Enabling SNMP Traps for Root Elections and Topology Changes879
- Configuring Spanning Trees as Hitless879
- STP Loop Guard880
  - Configuring Loop Guard881
- Displaying STP Guard Configuration882
Supportassist883
- Configuring Supportassist Using a Configuration Wizard884
- Configuring Supportassist Manually884
- Configuring Supportassist Activity886
- Configuring Supportassist Company887
- Configuring Supportassist Person888
- Configuring Supportassist Server889
- Viewing Supportassist Configuration890
System Time and Date892
- Network Time Protocol892
- Dell Networking os Time and Date899
Tunneling903
- Configuring a Tunnel903
- Configuring Tunnel Keepalive Settings904
- Configuring a Tunnel Interface905
- Configuring Tunnel Allow-Remote Decapsulation905
- Configuring Tunnel Source Anylocal Decapsulation906
- Guidelines for Configuring Multipoint Receive-Only Tunnels906
- Multipoint Receive-Only Tunnels907
Upgrade Procedures908
- Get Help with Upgrades908
Virtual Lans (Vlans)909
- Default VLAN909
- Port-Based Vlans910
- Vlans and Port Tagging910
- Configuration Task List911
- Configuring Native Vlans915
- Enabling Null VLAN as the Default VLAN916
VLT Proxy Gateway917
- Proxy Gateway in VLT Domains917
- Configuring a Static VLT Proxy Gateway922
- Configuring an LLDP VLT Proxy Gateway922
Virtual Link Trunking (VLT)924
- Overview924
  - VLT on Core Switches925
  - Enhanced VLT925
- VLT Terminology926
- Configure Virtual Link Trunking927
- RSTP Configuration937
- PVST+ Configuration950
  - Sample PVST+ Configuration951
- Evlt Configuration Example951
  - Evlt Configuration Step Examples952
- PIM-Sparse Mode Configuration Example954
- Verifying a VLT Configuration954
- Additional VLT Sample Configurations958
- Troubleshooting VLT960
- Reconfiguring Stacked Switches as VLT962
- Specifying VLT Nodes in a PVLAN962
- Configuring a VLT VLAN or LAG in a PVLAN966
  - Creating a VLT LAG or a VLT VLAN966
  - Associating the VLT LAG or VLT VLAN in a PVLAN967
- Proxy ARP Capability on VLT Peer Nodes968
  - Working of Proxy ARP for VLT Peer Nodes969
- VLT Nodes as Rendezvous Points for Multicast Resiliency970
- Configuring VLAN-Stack over VLT971
Virtual Extensible LAN (VXLAN)975
- Overview975
- Components of VXLAN Network976
- Functional Overview of VXLAN Gateway977
- VXLAN Frame Format977
  - Components of VXLAN Frame Format978
- Configuring and Controlling VXLAN from the NVP Controller GUI979
- Configuring Vxlan Gateway981
  - Connecting to an NVP Controller981
  - Advertising VXLAN Access Ports to Controller982
- Displaying VXLAN Configurations984
- VXLAN Service Nodes for BFD985
  - Examples of the Show Bfd Neighbors Command985
Virtual Routing and Forwarding (VRF)986
- VRF Overview986
- VRF Configuration Notes987
  - Dhcp990
- VRF Configuration990
- Sample VRF Configuration994
- Route Leaking Vrfs1002
- Dynamic Route Leaking1002
  - Configuring Route Leaking Without Filtering Criteria1002
  - Configuring Route Leaking with Filtering1006
Virtual Router Redundancy Protocol (VRRP)1009
- VRRP Overview1009
- VRRP Benefits1010
- VRRP Implementation1010
- VRRP Configuration1011
  - Configuration Task List1011
  - Setting VRRP Initialization Delay1021
- Sample Configurations1021
Debugging and Diagnostics1036
- Offline Diagnostics1036
  - Important Points to Remember1036
  - Running Offline Diagnostics1036
- Trace Logs1041
- Auto Save on Crash or Rollover1041
- Hardware Watchdog Timer1041
- Enabling Environmental Monitoring1041
- Buffer Tuning1043
- Troubleshooting Packet Loss1049
- Enabling Application Core Dumps1062
- Mini Core Dumps1063
- Enabling TCP Dumps1064
Standards Compliance1065
- IEEE Compliance1065
- RFC and I-D Compliance1066
- MIB Location1080

Dell S6000–ON - BFD Packet Format

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