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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

Notes, cautions, and warnings
About this Guide
- Audience
- Conventions
- Related Documents
Configuration Fundamentals
- Accessing the Command Line
- CLI Modes
  - Navigating CLI Modes
- The do Command
- Undoing Commands
- Obtaining Help
- Entering and Editing Commands
- Command History
- Filtering show Command Outputs
- Multiple Users in Configuration Mode
Getting Started
- Console Access
  - Serial Console
    - Accessing the Console Port
    - Pin Assignments
- Accessing the CLI Interface and Running Scripts Using SSH
- Default Configuration
- Configuring a Host Name
- Accessing the System Remotely
- Configuring the Enable Password
- Configuration File Management
- Managing the File System
- Enabling Software Features on Devices Using a Command Option
- View Command History
- Upgrading Dell EMC Networking OS
- Verify Software Images Before Installation
- Using HTTP for File Transfers
Management
- Configuring Privilege Levels
  - Removing a Command from EXEC Mode
  - Moving a Command from EXEC Privilege Mode to EXEC Mode
  - Allowing Access to CONFIGURATION Mode Commands
  - Allowing Access to Different Modes
  - Applying a Privilege Level to a Username
  - Applying a Privilege Level to a Terminal Line
- Configuring Logging
  - Audit and Security Logs
  - Configuring Logging Format
  - Display the Logging Buffer and the Logging Configuration
  - Setting Up a Secure Connection to a Syslog Server
  - Sending System Messages to a Syslog Server
- Track Login Activity
  - Restrictions for Tracking Login Activity
  - Configuring Login Activity Tracking
  - Display Login Statistics
- Limit Concurrent Login Sessions
  - Restrictions for Limiting the Number of Concurrent Sessions
  - Configuring Concurrent Session Limit
  - Enabling the System to Clear Existing Sessions
- Enabling Secured CLI Mode
- Log Messages in the Internal Buffer
- Disabling System Logging
- Sending System Messages to a Syslog Server
  - Configuring a UNIX System as a Syslog Server
- Changing System Logging Settings
- Display the Logging Buffer and the Logging Configuration
- Configuring a UNIX Logging Facility Level
- Synchronizing Log Messages
- Enabling Timestamp on Syslog Messages
- File Transfer Services
  - Enabling the FTP Server
  - Configuring FTP Server Parameters
  - Configuring FTP Client Parameters
- Terminal Lines
  - Denying and Permitting Access to a Terminal Line
  - Configuring Login Authentication for Terminal Lines
- Setting Timeout for EXEC Privilege Mode
- Using Telnet to get to Another Network Device
- Lock CONFIGURATION Mode
- LPC Bus Quality Degradation
- Restoring the Factory Default Settings
  - Restoring Factory Default Environment Variables
- Viewing the Reason for Last System Reboot
802.1X
- Port-Authentication Process
  - EAP over RADIUS
- Configuring 802.1X
- Important Points to Remember
- Enabling 802.1X
- Configuring Request Identity Re-Transmissions
  - Configuring a Quiet Period after a Failed Authentication
- Forcibly Authorizing or Unauthorizing a Port
- Re-Authenticating a Port
- Configuring Timeouts
- Configuring Dynamic VLAN Assignment with Port Authentication
- Guest and Authentication-Fail VLANs
  - Configuring a Guest VLAN
  - Configuring an Authentication-Fail VLAN
Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)
- Optimizing CAM Utilization During the Attachment of ACLs to VLANs
- Guidelines for Configuring ACL VLAN Groups
- Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters
- Viewing CAM Usage
- Allocating FP Blocks for VLAN Processes
- Unified Forwarding Table (UFT) Modes
  - Configuring UFT Modes
Access Control Lists (ACLs)
- IP Access Control Lists (ACLs)
  - CAM Usage
  - Implementing ACLs on Dell EMC Networking OS
- Important Points to Remember
- IP Fragment Handling
  - IP Fragments ACL Examples
  - Layer 4 ACL Rules Examples
- Configure a Standard IP ACL
  - Configuring a Standard IP ACL Filter
- Configure an Extended IP ACL
  - Configuring Filters with a Sequence Number
    - Configure Filters, TCP Packets
    - Configure Filters, UDP Packets
  - Configuring Filters Without a Sequence Number
- Configure Layer 2 and Layer 3 ACLs
- Assign an IP ACL to an Interface
- Applying an IP ACL
  - Counting ACL Hits
- Configure Ingress ACLs
- Configure Egress ACLs
  - Applying Egress Layer 3 ACLs (Control-Plane)
- IP Prefix Lists
  - Configuration Task List for Prefix Lists
- ACL Remarks
  - Configuring a Remark
  - Deleting a Remark
- ACL Resequencing
  - Resequencing an ACL or Prefix List
- Route Maps
- Logging of ACL Processes
  - Guidelines for Configuring ACL Logging
  - Configuring ACL Logging
- Flow-Based Monitoring
  - Enabling Flow-Based Monitoring
- Configuring UDF ACL
- Configuring IP Mirror Access Group
Bidirectional Forwarding Detection (BFD)
- How BFD Works
- Important Points to Remember
- Configure BFD
Border Gateway Protocol (BGP)
- BGP IP version 4 (BGPv4) Overview
- Basic BGP configuration tasks
- Advanced BGP configuration tasks
Content Addressable Memory (CAM)
- CAM Allocation
- Test CAM Usage
- View CAM-ACL Settings
- View CAM Usage
- Configuring CAM Threshold and Silence Period
- CAM Optimization
- Troubleshoot CAM Profiling
  - QoS CAM Region Limitation
Control Plane Policing (CoPP)
- Configure Control Plane Policing
Data Center Bridging (DCB)
- Ethernet Enhancements in Data Center Bridging
  - Priority-Based Flow Control
  - Enhanced Transmission Selection
  - Data Center Bridging Exchange Protocol (DCBx)
  - Data Center Bridging in a Traffic Flow
- Enabling Data Center Bridging
  - DCB Maps and its Attributes
- Data Center Bridging: Default Configuration
- Configuring Priority-Based Flow Control
  - Configuring Lossless Queues
- Configuring PFC in a DCB Map
- Applying a DCB Map on a Port
- Configuring PFC without a DCB Map
- Priority-Based Flow Control Using Dynamic Buffer Method
- Behavior of Tagged Packets
- Configuration Example for DSCP and PFC Priorities
- Using PFC to Manage Converged Ethernet Traffic
- Configure Enhanced Transmission Selection
  - ETS Prerequisites and Restrictions
  - Creating an ETS Priority Group
  - ETS Operation with DCBx
  - Configuring Bandwidth Allocation for DCBx CIN
  - Configuring ETS in a DCB Map
- Hierarchical Scheduling in ETS Output Policies
- Using ETS to Manage Converged Ethernet Traffic
- Applying DCB Policies in a Switch Stack
- Configure a DCBx Operation
  - DCBx Operation
  - DCBx Port Roles
  - DCB Configuration Exchange
  - Configuration Source Election
  - Propagation of DCB Information
  - Auto-Detection and Manual Configuration of the DCBx Version
  - DCBx Example
  - DCBx Prerequisites and Restrictions
  - Configuring DCBx
- Verifying the DCB Configuration
- QoS dot1p Traffic Classification and Queue Assignment
- Configuring the Dynamic Buffer Method
- Sample DCB Configuration
Dynamic Host Configuration Protocol (DHCP)
- DHCP Packet Format and Options
- Assign an IP Address using DHCP
- Implementation Information
- Configure the System to be a DHCP Server
- Configure the System to be a Relay Agent
- Configure the System to be a DHCP Client
- DHCP Relay When DHCP Server and Client are in Different VRFs
  - Configuring Route Leaking between VRFs on DHCP Relay Agent
- Non-default VRF configuration for DHCPv6 helper address
- Configuring DHCP relay source interface
  - Global DHCP relay source IPv4 or IPv6 configuration
  - Interface level DHCP relay source IPv4 or IPv6 configuration
- Configure the System for User Port Stacking (Option 230)
- Configure Secure DHCP
- Source Address Validation
Equal Cost Multi-Path (ECMP)
- ECMP for Flow-Based Affinity
- Link Bundle Monitoring
- RTAG7
- Flow-based Hashing for ECMP
FIP Snooping
- Fibre Channel over Ethernet
- Ensure Robustness in a Converged Ethernet Network
- FIP Snooping on Ethernet Bridges
- FIP Snooping in a Switch Stack
- Using FIP Snooping
- Displaying FIP Snooping Information
- FCoE Transit Configuration Example
FIPS Cryptography
- Configuration Tasks
- Preparing the System
- Enabling FIPS Mode
- Generating Host-Keys
- Monitoring FIPS Mode Status
- Disabling FIPS Mode
Force10 Resilient Ring Protocol (FRRP)
- Protocol Overview
- Implementing FRRP
- FRRP Configuration
- Troubleshooting FRRP
- Sample Configuration and Topology
- FRRP Support on VLT
GARP VLAN Registration Protocol (GVRP)
- Configure GVRP
- Enabling GVRP Globally
- Enabling GVRP on a Layer 2 Interface
- Configure GVRP Registration
- Configure a GARP Timer
- RPM Redundancy
High Availability (HA)
- Component Redundancy
- Pre-Configuring a Stack Unit Slot
- Removing a Provisioned Logical Stack Unit
- Hitless Behavior
- Graceful Restart
- Software Resiliency
- Hot-Lock Behavior
Internet Group Management Protocol (IGMP)
- IGMP Protocol Overview
  - IGMP Version 2
    - Join a Multicast Group
      - Responding to an IGMP Query
      - Sending an Unsolicited IGMP Report
    - Leaving a Multicast Group
  - IGMP Version 3
    - Joining and Filtering Groups and Sources
    - Leaving and Staying in Groups
- Configure IGMP
- Viewing IGMP Enabled Interfaces
- Selecting an IGMP Version
- Viewing IGMP Groups
- Adjusting Timers
  - Adjusting Query and Response Timers
- Preventing a Host from Joining a Group
- Enabling IGMP Immediate-Leave
- IGMP Snooping
- Fast Convergence after MSTP Topology Changes
- Egress Interface Selection (EIS) for HTTP and IGMP Applications
- Designating a Multicast Router Interface
Interfaces
- Interface Types
- View Basic Interface Information
- Resetting an Interface to its Factory Default State
- Enabling a Physical Interface
- Physical Interfaces
  - Configuration Task List for Physical Interfaces
  - Overview of Layer Modes
  - Configuring Layer 2 (Data Link) Mode
  - Configuring Layer 2 (Interface) Mode
  - Configuring Layer 3 (Network) Mode
  - Configuring Layer 3 (Interface) Mode
- Automatic recovery of an Err-disabled interface
  - Configuring an automatic recovery for an Err-disabled interface
- Egress Interface Selection (EIS)
  - Configuring EIS
- Management Interfaces
  - Configuring Management Interfaces
  - Configuring a Management Interface on an Ethernet Port
- VLAN Interfaces
- Loopback Interfaces
- Null Interfaces
- Configuring Port Delay
- Port Channel Interfaces
  - Port Channel Definition and Standards
  - Port Channel Benefits
  - Port Channel Implementation
  - Interfaces in Port Channels
  - Configuration Tasks for Port Channel Interfaces
  - Creating a Port Channel
  - Adding a Physical Interface to a Port Channel
  - Reassigning an Interface to a New Port Channel
  - Configuring the Minimum Oper Up Links in a Port Channel
  - Adding or Removing a Port Channel from a VLAN
  - Assigning an IP Address to a Port Channel
  - Deleting or Disabling a Port Channel
  - Load Balancing Through Port Channels
  - Changing the Hash Algorithm
- Bulk Configuration
  - Interface Range
  - Bulk Configuration Examples
- Defining Interface Range Macros
  - Define the Interface Range
  - Choosing an Interface-Range Macro
- Monitoring and Maintaining Interfaces
  - Maintenance Using TDR
- Non Dell-Qualified Transceivers
- Splitting 40G Ports without Reload
- Splitting QSFP Ports to SFP+ Ports
- Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port
- Link Dampening
  - Enabling Link Dampening
- Link Bundle Monitoring
- Using Ethernet Pause Frames for Flow Control
  - Enabling Pause Frames
- Configure the MTU Size on an Interface
- Port-Pipes
- Auto-Negotiation on Ethernet Interfaces
  - Setting the Speed of Ethernet Interfaces
  - Set Auto-Negotiation Options
    - Adjusting the Keepalive Timer
- View Advanced Interface Information
  - Configuring the Interface Sampling Size
- Configuring the Traffic Sampling Size Globally
- Dynamic Counters
  - Clearing Interface Counters
- Discard Counters
  - Display discard counters
Internet Protocol Security (IPSec)
- Configuring IPSec
IPv4 Routing
- IP Addresses
- Configuration Tasks for IP Addresses
- Assigning IP Addresses to an Interface
- Configuring Static Routes
  - Adding description for IPv4 and IPv6 static routes
- Configure Static Routes for the Management Interface
- IPv4 Path MTU Discovery Overview
- Using the Configured Source IP Address in ICMP Messages
- Configuring the Duration to Establish a TCP Connection
- Enabling Directed Broadcast
- Resolution of Host Names
- Enabling Dynamic Resolution of Host Names
- Specifying the Local System Domain and a List of Domains
- Configuring DNS with Traceroute
- ARP
- Configuration Tasks for ARP
- Configuring Static ARP Entries
- Enabling Proxy ARP
- Clearing ARP Cache
- ARP Learning via Gratuitous ARP
- Enabling ARP Learning via Gratuitous ARP
- ARP Learning via ARP Request
- Configuring ARP Retries
- ICMP
- Configuration Tasks for ICMP
- Enabling ICMP Unreachable Messages
- ICMP Redirects
- UDP Helper
- Enabling UDP Helper
- Configuring a Broadcast Address
- Configurations Using UDP Helper
- UDP Helper with Broadcast-All Addresses
- UDP Helper with Subnet Broadcast Addresses
- UDP Helper with Configured Broadcast Addresses
- UDP Helper with No Configured Broadcast Addresses
- Troubleshooting UDP Helper
IPv6 Routing
- Protocol Overview
- Implementing IPv6 with Dell EMC Networking OS
- ICMPv6
- Path MTU discovery
- IPv6 Neighbor Discovery
  - IPv6 Neighbor Discovery of MTU Packets
- Configuration Task List for IPv6 RDNSS
- Secure Shell (SSH) Over an IPv6 Transport
- Configuration Tasks for IPv6
- Configuring IPv6 RA Guard
  - Configuring IPv6 RA Guard on an Interface
  - Monitoring IPv6 RA Guard
iSCSI Optimization
- iSCSI Optimization Overview
- Default iSCSI Optimization Values
- iSCSI Optimization Prerequisites
- Configuring iSCSI Optimization
- Displaying iSCSI Optimization Information
Intermediate System to Intermediate System
- IS-IS Protocol Overview
- IS-IS Addressing
- Multi-Topology IS-IS
- Graceful Restart
  - Timers
- Implementation Information
- Configuration Information
- IS-IS Metric Styles
- Configure Metric Values
- Sample Configurations
Link Aggregation Control Protocol (LACP)
- Introduction to Dynamic LAGs and LACP
- LACP Configuration Tasks
- Shared LAG State Tracking
  - Configuring Shared LAG State Tracking
  - Important Points about Shared LAG State Tracking
- LACP Basic Configuration Example
  - Configure a LAG on ALPHA
Layer 2
- Manage the MAC Address Table
- MAC Learning Limit
- NIC Teaming
- Configure Redundant Pairs
- Far-End Failure Detection
Link Layer Discovery Protocol (LLDP)
- 802.1AB (LLDP) Overview
  - Protocol Data Units
- Optional TLVs
  - Management TLVs
    - IEEE Organizationally Specific TLVs
- TIA-1057 (LLDP-MED) Overview
  - TIA Organizationally Specific TLVs
- Configure LLDP
- CONFIGURATION versus INTERFACE Configurations
- Enabling LLDP
  - Disabling and Undoing LLDP
- Enabling LLDP on Management Ports
  - Disabling and Undoing LLDP on Management Ports
- Advertising TLVs
- Storing and Viewing Unrecognized LLDP TLVs
- Viewing the LLDP Configuration
- Viewing Information Advertised by Adjacent LLDP Neighbors
- Configuring LLDPDU Intervals
- Configuring LLDP Notification Interval
- Configuring LLDP Notification Interval
- Configuring Transmit and Receive Mode
- Configuring the Time to Live Value
- Debugging LLDP
- Relevant Management Objects
Microsoft Network Load Balancing
- Configuring a Switch for NLB
Multicast Source Discovery Protocol (MSDP)
- Anycast RP
- Implementation Information
- Configure Multicast Source Discovery Protocol
  - Related Configuration Tasks
- Enable MSDP
- Manage the Source-Active Cache
- Accept Source-Active Messages that Fail the RFP Check
- Specifying Source-Active Messages
- Limiting the Source-Active Messages from a Peer
- Preventing MSDP from Caching a Local Source
- Preventing MSDP from Caching a Remote Source
- Preventing MSDP from Advertising a Local Source
- Logging Changes in Peership States
- Terminating a Peership
- Clearing Peer Statistics
- Debugging MSDP
- MSDP with Anycast RP
- Configuring Anycast RP
  - Reducing Source-Active Message Flooding
  - Specifying the RP Address Used in SA Messages
- MSDP Sample Configurations
Multicast Listener Discovery Protocol
- MLD timers
  - Reducing Host Response Burstiness
- Configuring MLD Version
- Clearing MLD groups
- Debugging MLD
- Explicit Tracking
- Reducing Leave Latency
- Displaying MLD groups table
- Displaying MLD Interfaces
Multiple Spanning Tree Protocol (MSTP)
- Spanning Tree Variations
  - Implementation Information
- Configure Multiple Spanning Tree Protocol
  - Related Configuration Tasks
- Enable Multiple Spanning Tree Globally
- Adding and Removing Interfaces
- Creating Multiple Spanning Tree Instances
- Influencing MSTP Root Selection
- Interoperate with Non-Dell Bridges
- Changing the Region Name or Revision
- Modifying Global Parameters
- Modifying the Interface Parameters
- Setting STP path cost as constant
- Configuring an EdgePort
- Flush MAC Addresses after a Topology Change
- MSTP Sample Configurations
- Debugging and Verifying MSTP Configurations
Multicast Features
- Enabling IP Multicast
- Implementation Information
- Multicast Policies
  - IPv4 Multicast Policies
- Understanding Multicast Traceroute (mtrace)
- Printing Multicast Traceroute (mtrace) Paths
- Supported Error Codes
- mtrace Scenarios
Multicast Listener Discovery Protocol
- MLD timers
  - Reducing Host Response Burstiness
- Clearing MLD groups
- Debugging MLD
- Explicit Tracking
- Reducing Leave Latency
- Displaying MLD groups table
- Displaying MLD Interfaces
- MLD Snooping
Object Tracking
- Object Tracking Overview
- Object Tracking Configuration
- Displaying Tracked Objects
Open Shortest Path First (OSPFv2 and OSPFv3)
- Protocol Overview
- OSPF with Dell EMC Networking OS
- Configuration Information
- MIB Support for OSPFv3
  - Viewing the OSPFv3 MIB
- Configuration Task List for OSPFv3 (OSPF for IPv6)
Policy-based Routing (PBR)
- Overview
- Implementing PBR
- Configuration Task List for Policy-based Routing
- Sample Configuration
PIM Sparse-Mode (PIM-SM)
- Implementation Information
- Protocol Overview
- Configuring PIM-SM
  - Related Configuration Tasks
- Enable PIM-SM
- Configuring S,G Expiry Timers
- Configuring a Static Rendezvous Point
  - Overriding Bootstrap Router Updates
- Configuring a Designated Router
- Creating Multicast Boundaries and Domains
- Electing an RP using the BSR Mechanism
PIM Source-Specific Mode (PIM-SSM)
- Implementation Information
- Configure PIM-SSM
- Enabling PIM-SSM
- Use PIM-SSM with IGMP Version 2 Hosts
- Electing an RP using the BSR Mechanism
  - Enabling RP to Server Specific Multicast Groups
Port Monitoring
- Important Points to Remember
- Port Monitoring
- Configuring Port Monitoring
- Configuring Monitor Multicast Queue
- Enabling Flow-Based Monitoring
- Remote Port Mirroring
- Encapsulated Remote Port Monitoring
- ERPM Behavior on a typical Dell EMC Networking OS
- Port Monitoring on VLT
Private VLANs (PVLAN)
- Private VLAN Concepts
- Using the Private VLAN Commands
- Configuration Task List
- Private VLAN Configuration Example
- Inspecting the Private VLAN Configuration
Per-VLAN Spanning Tree Plus (PVST+)
- Protocol Overview
- Implementation Information
- Configure Per-VLAN Spanning Tree Plus
- Enabling PVST+
- Disabling PVST+
- Influencing PVST+ Root Selection
- Modifying Global PVST+ Parameters
- Modifying Interface PVST+ Parameters
- Configuring an EdgePort
- PVST+ in Multi-Vendor Networks
- Enabling PVST+ Extend System ID
- PVST+ Sample Configurations
Quality of Service (QoS)
- Implementation Information
- Port-Based QoS Configurations
- Policy-Based QoS Configurations
- DSCP Color Maps
- Enabling QoS Rate Adjustment
- Enabling Strict-Priority Queueing
- Weighted Random Early Detection
- Pre-Calculating Available QoS CAM Space
- Configuring Weights and ECN for WRED
- Configuring WRED and ECN Attributes
- Guidelines for Configuring ECN for Classifying and Color-Marking Packets
- Applying Layer 2 Match Criteria on a Layer 3 Interface
- Applying DSCP and VLAN Match Criteria on a Service Queue
- Classifying Incoming Packets Using ECN and Color-Marking
- Guidelines for Configuring ECN for Classifying and Color-Marking Packets
- Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class
- Sample configuration to mark non-ecn packets as “yellow” with single traffic class
- Enabling Buffer Statistics Tracking
Routing Information Protocol (RIP)
- Protocol Overview
  - RIPv1
  - RIPv2
- Implementation Information
- Configuration Information
  - Configuration Task List
  - RIP Configuration Example
Remote Monitoring (RMON)
- Implementation Information
- Fault Recovery
Rapid Spanning Tree Protocol (RSTP)
- Protocol Overview
- Configuring Rapid Spanning Tree
- Important Points to Remember
  - RSTP and VLT
- Configuring Interfaces for Layer 2 Mode
- Enabling Rapid Spanning Tree Protocol Globally
- Adding and Removing Interfaces
- Modifying Global Parameters
  - Enabling SNMP Traps for Root Elections and Topology Changes
- Modifying Interface Parameters
- Enabling SNMP Traps for Root Elections and Topology Changes
- Influencing RSTP Root Selection
- Configuring an EdgePort
- Configuring Fast Hellos for Link State Detection
Software-Defined Networking (SDN)
Security
- AAA Accounting
  - Configuration Task List for AAA Accounting
  - RADIUS Accounting
- AAA Authentication
  - Configuration Task List for AAA Authentication
- Obscuring Passwords and Keys
- AAA Authorization
  - Privilege Levels Overview
  - Configuration Task List for Privilege Levels
- RADIUS
- TACACS+
- Protection from TCP Tiny and Overlapping Fragment Attacks
- Enabling SCP and SSH
- Telnet
- VTY Line and Access-Class Configuration
- Role-Based Access Control
- Two Factor Authentication (2FA)
- Configuring the System to Drop Certain ICMP Reply Messages
- Dell EMC Networking OS Security Hardening
Service Provider Bridging
- VLAN Stacking
- VLAN Stacking Packet Drop Precedence
- Dynamic Mode CoS for VLAN Stacking
  - Mapping C-Tag to S-Tag dot1p Values
- Layer 2 Protocol Tunneling
- Provider Backbone Bridging
sFlow
- Overview
- Implementation Information
- Enabling Extended sFlow
- Enabling and Disabling sFlow on an Interface
- Enabling sFlow Max-Header Size Extended
- sFlow Show Commands
- Configuring Specify Collectors
- Changing the Polling Intervals
- Back-Off Mechanism
- sFlow on LAG ports
- Enabling Extended sFlow
  - Important Points to Remember
Simple Network Management Protocol (SNMP)
- Protocol Overview
- Implementation Information
- SNMPv3 Compliance With FIPS
- Configuration Task List for SNMP
- Important Points to Remember
- Set up SNMP
  - Creating a Community
  - Setting Up User-Based Security (SNMPv3)
  - Enable SNMPv3 traps
- Reading Managed Object Values
- Writing Managed Object Values
- Configuring Contact and Location Information using SNMP
- Subscribing to Managed Object Value Updates using SNMP
- Enabling a Subset of SNMP Traps
- Enabling an SNMP Agent to Notify Syslog Server Failure
- Copy Configuration Files Using SNMP
  - Copying a Configuration File
  - Copying Configuration Files via SNMP
  - Copying the Startup-Config Files to the Running-Config
  - Copying the Startup-Config Files to the Server via FTP
  - Copying the Startup-Config Files to the Server via TFTP
  - Copy a Binary File to the Startup-Configuration
  - Additional MIB Objects to View Copy Statistics
  - Obtaining a Value for MIB Objects
- MIB Support to Display Reason for Last System Reboot
  - Viewing the Reason for Last System Reboot Using SNMP
- MIB Support for Power Monitoring
- MIB Support to Display the Available Memory Size on Flash
  - Viewing the Available Flash Memory Size
- MIB Support to Display the Software Core Files Generated by the System
  - Viewing the Software Core Files Generated by the System
- MIB Support to Display the Available Partitions on Flash
  - Viewing the Available Partitions on Flash
- MIB Support to Display Egress Queue Statistics
- MIB Support to ECMP Group Count
  - Viewing the ECMP Group Count Information
- MIB Support for entAliasMappingTable
  - Viewing the entAliasMappingTable MIB
- MIB Support for LAG
  - Viewing the LAG MIB
- MIB Support to Display Unrecognized LLDP TLVs
  - MIB Support to Display Reserved Unrecognized LLDP TLVs
    - Viewing the Details of Reserved Unrecognized LLDP TLVs
  - MIB Support to Display Organizational Specific Unrecognized LLDP TLVs
    - Viewing the Details of Organizational Specific Unrecognized LLDP TLVs
- MIB Support for LLDP Notification Interval
- MIB support for Port Security
  - Global MIB objects for port security
  - MIB support for interface level port security
    - Enabling and viewing SNMP for port security
  - MIB objects for configuring MAC addresses
    - Enabling and viewing SNMP for static MAC addresses
  - MIB objects for configuring MAC addresses
    - Viewing the Details of MAC addresses
- Manage VLANs using SNMP
  - Creating a VLAN
  - Assigning a VLAN Alias
  - Displaying the Ports in a VLAN
  - Add Tagged and Untagged Ports to a VLAN
- Managing Overload on Startup
- Enabling and Disabling a Port using SNMP
- Fetch Dynamic MAC Entries using SNMP
- Example of Deriving the Interface Index Number
- Monitoring BGP sessions via SNMP
- Monitor Port-Channels
- Enabling an SNMP Agent to Notify Syslog Server Failure
- Troubleshooting SNMP Operation
- Transceiver Monitoring
- Configuring SNMP context name
Stacking
- Stacking Overview
- Important Points to Remember
- Stacking Installation Tasks
- Stacking Configuration Tasks
- Verify a Stack Configuration
  - Displaying the Status of Stacking Ports
- Remove Units or Front End Ports from a Stack
  - Removing a Unit from a Stack
  - Removing Front End Port Stacking
- Troubleshoot a Stack
  - Recover from Stack Link Flaps
  - Recover from a Card Problem State on a Stack
Storm Control
- Configure Storm Control
  - Configuring Storm Control from INTERFACE Mode
  - Configuring Storm Control from CONFIGURATION Mode
Spanning Tree Protocol (STP)
- Protocol Overview
- Configure Spanning Tree
- Important Points to Remember
- Configuring Interfaces for Layer 2 Mode
- Enabling Spanning Tree Protocol Globally
- Adding an Interface to the Spanning Tree Group
- Modifying Global Parameters
- Modifying Interface STP Parameters
- Enabling PortFast
  - Prevent Network Disruptions with BPDU Guard
- Selecting STP Root
- STP Root Guard
  - Root Guard Scenario
  - Configuring Root Guard
- Enabling SNMP Traps for Root Elections and Topology Changes
- Configuring Spanning Trees as Hitless
- STP Loop Guard
  - Configuring Loop Guard
- Displaying STP Guard Configuration
SupportAssist
- Configuring SupportAssist Using a Configuration Wizard
- Configuring SupportAssist Manually
- Configuring SupportAssist Activity
- Configuring SupportAssist Company
- Configuring SupportAssist Person
- Configuring SupportAssist Server
- Viewing SupportAssist Configuration
System Time and Date
- Network Time Protocol
- Dell EMC Networking OS Time and Date
Tunneling
- Configuring a Tunnel
- Configuring Tunnel Keepalive Settings
- Configuring a Tunnel Interface
- Configuring Tunnel Allow-Remote Decapsulation
- Configuring the Tunnel Source Anylocal
Uplink Failure Detection (UFD)
- Feature Description
- How Uplink Failure Detection Works
- UFD and NIC Teaming
- Important Points to Remember
- Configuring Uplink Failure Detection
- Clearing a UFD-Disabled Interface
- Displaying Uplink Failure Detection
- Sample Configuration: Uplink Failure Detection
Upgrade Procedures
Virtual LANs (VLANs)
- Default VLAN
- Port-Based VLANs
- VLANs and Port Tagging
- Configuration Task List
- Configuring Native VLANs
- Enabling Null VLAN as the Default VLAN
Virtual Link Trunking (VLT)
- Overview
- Configure Virtual Link Trunking
- RSTP Configuration
- PVST+ Configuration
- Peer Routing Configuration Example
- eVLT Configuration Example
- PIM-Sparse Mode Configuration Example
- Verifying a VLT Configuration
- Additional VLT Sample Configurations
- Troubleshooting VLT
- Reconfiguring Stacked Switches as VLT
- Specifying VLT Nodes in a PVLAN
- Configuring a VLT VLAN or LAG in a PVLAN
- Proxy ARP Capability on VLT Peer Nodes
- VLT Nodes as Rendezvous Points for Multicast Resiliency
- Configuring VLAN-Stack over VLT
- IPv6 Peer Routing in VLT Domains Overview
- Configure BFD in VLT Domain
  - Sample BFD configuration in VLT domain
- VXLAN on VLT
VLT Proxy Gateway
- Proxy Gateway in VLT Domains
- Configuring a Static VLT Proxy Gateway
- Configuring an LLDP VLT Proxy Gateway
- VLT Proxy Gateway Sample Topology
Virtual Extensible LAN (VXLAN)
- advertise-local-mac
- Components of VXLAN network
- Functional Overview of VXLAN Gateway
- VXLAN Frame Format
- Limitations on VXLAN
- Configuring and Controlling VXLAN from the NSX Controller GUI
- Configuring and Controling VXLAN from Nuage Controller GUI
- Configuring VxLAN Gateway
  - Connecting to an NVP Controller
  - Advertising VXLAN Access Ports to Controller
- Displaying VXLAN Configurations
- VXLAN Service nodes for BFD
- Static Virtual Extensible LAN (VXLAN)
- Preserving 802.1 p value across VXLAN tunnels
- VXLAN Scenario
- Routing in and out of VXLAN tunnels
  - Configuring VXLAN RIOT
  - VLT Scenario
- NSX Controller-based VXLAN for VLT
Virtual Routing and Forwarding (VRF)
- VRF Overview
- VRF Configuration Notes
  - DHCP
- VRF Configuration
- Sample VRF Configuration
- Route Leaking VRFs
- Dynamic Route Leaking
  - Configuring Route Leaking without Filtering Criteria
  - Configuring Route Leaking with Filtering
Virtual Router Redundancy Protocol (VRRP)
- VRRP Overview
- VRRP Benefits
- VRRP Implementation
- VRRP Configuration
  - Configuration Task List
  - Setting VRRP Initialization Delay
- Sample Configurations
  - VRRP in a VRF Configuration
    - VRRP in a VRF: Non-VLAN Scenario
    - VLAN Scenario
  - VRRP for IPv6 Configuration
- Proxy Gateway with VRRP
Debugging and Diagnostics
- Offline Diagnostics
  - Important Points to Remember
  - Running Offline Diagnostics
- Trace Logs
- Auto Save on Crash or Rollover
- Last Restart Reason
- Hardware Watchdog Timer
- Using the Show Hardware Commands
- Enabling Environmental Monitoring
- Troubleshooting Packet Loss
- Enabling Application Core Dumps
- Mini Core Dumps
- Enabling TCP Dumps
Standards Compliance
- IEEE Compliance
- RFC and I-D Compliance
- MIB Location
X.509v3
- Introduction to X.509v3 certificates
- X.509v3 support in
- Information about installing CA certificates
  - Installing CA certificate
- Information about Creating Certificate Signing Requests (CSR)
  - Creating Certificate Signing Requests (CSR)
- Information about installing trusted certificates
  - Installing trusted certificates
- Transport layer security (TLS)
  - Syslog over TLS
- Online Certificate Status Protocol (OSCP)
- Verifying certificates
  - Verifying Server certificates
  - Verifying Client Certificates
- Event logging

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Viewing Information Advertised by Adjacent LLDP Neighbors

To view brief information about adjacent devices or to view all the information that neighbors are advertising, use the following commands.

Display brief information about adjacent devices.
show lldp neighbors
Display all of the information that neighbors are advertising.
show lldp neighbors detail

Examples of Viewing Information Advertised by Neighbors

Example of Viewing Brief Information Advertised by Neighbors

DellEMC(conf-if-te-1/3-lldp)#end
DellEMC(conf-if-te-1/3)#do show lldp neighbors
Loc PortID  Rem Host Name  Rem Port Id           Rem Chassis Id
--------------------------------------------------------------------
Te 1/1       -             TenGigabitEthernet 1/5  00:01:e8:05:40:46
Te 1/2       -             TenGigabitEthernet 1/6  00:01:e8:05:40:46
Ma 1/1   swlab2-maa-tor-...TenGigabitEthernet 1/3  d8:9e:f3:b2:61:20
DellEMC(conf-if-te-1/3)#

The length of the LLDP neighbors (Remote host) name is truncated if it is above 15 characters. The full name can be checked in show lldp neighbors detail command as follows:

DellEMC#show lldp neighbors detail
========================================================================
Local Interface Ma 1/1 has 1 neighbor
  Total Frames Out: 83080
  Total Frames In: 86156
  Total Neighbor information Age outs: 0
  Total Multiple Neighbors Detected: 0
  Total Frames Discarded: 0
  Total In Error Frames: 0
  Total Unrecognized TLVs: 388448
  Total TLVs Discarded: 0
  Next packet will be sent after 15 seconds
  The neighbors are given below:
  -----------------------------------------------------------------------

    Remote Chassis ID Subtype: Mac address (4)
    Remote Chassis ID:  d8:9e:f3:b2:61:20
    Remote Port Subtype:  Interface name (5)
    Remote Port ID:  ethernet1/1/23
    Remote Port Description:  ethernet1/1/23
    Local Port ID: ManagementEthernet 1/1
    Locally assigned remote Neighbor Index: 2
    Remote TTL:  120
    Information valid for next 94 seconds
    Time since last information change of this neighbor:  5d5h9m
    Remote MTU:  1532
    Remote System Name:  swlab2-maa-tor-C4
    Remote Management Address (IPv4):  100.104.70.201
    Remote System Desc:  Dell EMC Networking OS10-Enterprise. Copyright
     (c) 1999-2019 by Dell Inc. All Rights Reserved. System Description: OS10
     Enterprise. OS Version: 10.4.3.4. System Type: S3048-ON
    Existing System Capabilities:  Repeater Bridge Router
    Enabled System Capabilities:  Repeater Bridge Router
    Remote Port Vlan ID:  2245
    MAC PHY Configuration:
      Auto-neg supported: 1
      Auto-neg enabled: 1
      Auto-neg advertised capabilities:
        1000BASE-T half duplex mode
      Operational MAU type:
        unknown
    UnknownTLVList:
    OrgUnknownTLVList:
          ((f8-b1-56), 24,  1)  ((f8-b1-56), 23,  1)  ((f8-b1-56), 22,  1)  ((f8-b1-56), 21,  7)  ((00-80-c2),  7,  5)
   ---------------------------------------------------------------------------

Following note is applicable only in platforms that support 25G interfaces:

NOTE Since different port types are shown in two letters, the 25G interface is represented as tf (Twentyfive) in show lldp neighbors output. But, in the configuration and show commands involving twentyFiveGigE interface, the keyword represented in Dell EMC Networking OS is twentyFiveGigE (in short tw).

Example of Viewing Detailed Information Advertised by Neighbors

DellEMC(conf)#do show lldp neighbors detail
========================================================================
Local Interface TenGigabitEthernet 1/1 has 2 neighbors
  Total Frames Out: 3
  Total Frames In: 8
  Total Neighbor information Age outs: 0
  Total Multiple Neighbors Detected: 0
  Total Frames Discarded: 0
  Total In Error Frames: 0
  Total Unrecognized TLVs: 960
  Total TLVs Discarded: 16
  Next packet will be sent after 9 seconds
  The neighbors are given below:
  -----------------------------------------------------------------------
 
    Remote Chassis ID Subtype: Mac address (4)
    Remote Chassis ID:  00:00:00:00:00:01
    Remote Port Subtype:  Interface name (5)
    Remote Port ID:  TenGigabitEthernEt 1/40
    Local Port ID: TenGigabitEthernet 1/1
    Locally assigned remote Neighbor Index: 1
    Remote TTL:  120
    Information valid for next 44 seconds
    Time since last information change of this neighbor:  00:01:16
    UnknownTLVList:
          (  9,  4) ( 10,  4) ( 11,  4) ( 12,  4) ( 13,  4) ( 14,  4) ( 15,  4) ( 16,  4) ( 17,  4) ( 18,  4)
          ( 19,  4) ( 20,  4) ( 21,  4) ( 22,  4) ( 23,  4) ( 24,  4) ( 25,  4) ( 26,  4) ( 27,  4) ( 28,  4)
          ( 29,  4) ( 30,  4) ( 31,  4) ( 32,  4) ( 33,  4) ( 34,  4) ( 35,  4) ( 36,  4) ( 37,  4) ( 38,  4)
          ( 39,  4) ( 40,  4) ( 41,  4) ( 42,  4) ( 43,  4) ( 44,  4) ( 45,  4) ( 46,  4) ( 47,  4) ( 48,  4)
          ( 49,  4) ( 50,  4) ( 51,  4) ( 52,  4) ( 53,  4) ( 54,  4) ( 55,  4) ( 56,  4) ( 57,  4) ( 58,  4)
          ( 59,  4) ( 60,  4) ( 61,  4) ( 62,  4) ( 63,  4) ( 64,  4) ( 65,  4) ( 66,  4) ( 67,  4) ( 68,  4)
          ( 69,  4) ( 70,  4) ( 71,  4) ( 72,  4) ( 73,  4) ( 74,  4) ( 75,  4) ( 76,  4) ( 77,  4) ( 78,  4)
          ( 79,  4) ( 80,  4) ( 81,  4) ( 82,  4) ( 83,  4) ( 84,  4) ( 85,  4) ( 86,  4) ( 87,  4) ( 88,  4)
          ( 89,  4) ( 90,  4) ( 91,  4) ( 92,  4) ( 93,  4) ( 94,  4) ( 95,  4) ( 96,  4) ( 97,  4) ( 98,  4)
          ( 99,  4) (100,  4) (101,  4) (102,  4) (103,  4) (104,  4) (105,  4) (106,  4) (107,  4) (108,  4)
          (109,  4) (110,  4) (111,  4) (112,  4) (113,  4) (114,  4) (115,  4) (116,  4) (117,  4) (118,  4)
          (119,  4) (120,  4) (121,  4) (122,  4) (123,  4) (124,  4) (125,  4) (126,  4)
    OrgUnknownTLVList:
   ---------------------------------------------------------------------------
 
    Remote Chassis ID Subtype: Mac address (4)
    Remote Chassis ID:  00:00:00:00:00:02
    Remote Port Subtype:  Interface name (5)
    Remote Port ID:  TenGigabitEthernEt 1/40
    Local Port ID: TenGigabitEthernet 1/1
    Locally assigned remote Neighbor Index: 2
    Remote TTL:  120
    Information valid for next 43 seconds
    Time since last information change of this neighbor:  00:01:17
    UnknownTLVList:
          (  9,  4) ( 10,  4) ( 11,  4) ( 12,  4) ( 13,  4) ( 14,  4) ( 15,  4) ( 16,  4) ( 17,  4) ( 18,  4)
          ( 19,  4) ( 20,  4) ( 21,  4) ( 22,  4) ( 23,  4) ( 24,  4) ( 25,  4) ( 26,  4) ( 27,  4) ( 28,  4)
          ( 29,  4) ( 30,  4) ( 31,  4) ( 32,  4) ( 33,  4) ( 34,  4) ( 35,  4) ( 36,  4) ( 37,  4) ( 38,  4)
          ( 39,  4) ( 40,  4) ( 41,  4) ( 42,  4) ( 43,  4) ( 44,  4) ( 45,  4) ( 46,  4) ( 47,  4) ( 48,  4)
          ( 49,  4) ( 50,  4) ( 51,  4) ( 52,  4) ( 53,  4) ( 54,  4) ( 55,  4) ( 56,  4) ( 57,  4) ( 58,  4)
          ( 59,  4) ( 60,  4) ( 61,  4) ( 62,  4) ( 63,  4) ( 64,  4) ( 65,  4) ( 66,  4) ( 67,  4) ( 68,  4)
          ( 69,  4) ( 70,  4) ( 71,  4) ( 72,  4) ( 73,  4) ( 74,  4) ( 75,  4) ( 76,  4) ( 77,  4) ( 78,  4)
          ( 79,  4) ( 80,  4) ( 81,  4) ( 82,  4) ( 83,  4) ( 84,  4) ( 85,  4) ( 86,  4) ( 87,  4) ( 88,  4)
          ( 89,  4) ( 90,  4) ( 91,  4) ( 92,  4) ( 93,  4) ( 94,  4) ( 95,  4) ( 96,  4) ( 97,  4) ( 98,  4)
          ( 99,  4) (100,  4) (101,  4) (102,  4) (103,  4) (104,  4) (105,  4) (106,  4) (107,  4) (108,  4)
          (109,  4) (110,  4) (111,  4) (112,  4) (113,  4) (114,  4) (115,  4) (116,  4) (117,  4) (118,  4)
          (119,  4) (120,  4) (121,  4) (122,  4) (123,  4) (124,  4) (125,  4) (126,  4)
    OrgUnknownTLVList:
   ---------------------------------------------------------------------------

========================================================================
Local Interface TenGigabitEthernet 1/2 has 3 neighbors
  Total Frames Out: 4
  Total Frames In: 8
  Total Neighbor information Age outs: 0
  Total Multiple Neighbors Detected: 0
  Total Frames Discarded: 0
  Total In Error Frames: 0
  Total Unrecognized TLVs: 1056
  Total TLVs Discarded: 0
  Next packet will be sent after 16 seconds
  The neighbors are given below:
  -----------------------------------------------------------------------
 
    Remote Chassis ID Subtype: Mac address (4)
    Remote Chassis ID:  4c:76:25:f4:ab:01
    Remote Port Subtype:  Interface name (5)
    Remote Port ID:  fortyGigE 1/2/8/1
    Local Port ID: TenGigabitEthernet 1/2
    Locally assigned remote Neighbor Index: 1
    Remote TTL:  300
    Information valid for next 201 seconds
    Time since last information change of this neighbor:  00:01:39
    UnknownTLVList:
    OrgUnknownTLVList:
         ((00-01-66),127,  4) ((00-01-66),126,  4) ((00-01-66),125,  4) ((00-01-66),124,  4) ((00-01-66),123,  4)
         ((00-01-66),122,  4) ((00-01-66),121,  4) ((00-01-66),120,  4) ((00-01-66),119,  4) ((00-01-66),118,  4)
   ---------------------------------------------------------------------------
 
    Remote Chassis ID Subtype: Mac address (4)
    Remote Chassis ID:  4c:76:25:f4:ab:02
    Remote Port Subtype:  Interface name (5)
    Remote Port ID:  fortyGigE 1/2/8/1
    Local Port ID: TenGigabitEthernet 1/2
    Locally assigned remote Neighbor Index: 2
    Remote TTL:  300
    Information valid for next 201 seconds
    Time since last information change of this neighbor:  00:01:39
    UnknownTLVList:
    OrgUnknownTLVList:
         ((00-01-66),127,  4) ((00-01-66),126,  4) ((00-01-66),125,  4) ((00-01-66),124,  4) ((00-01-66),123,  4)
         ((00-01-66),122,  4) ((00-01-66),121,  4) ((00-01-66),120,  4) ((00-01-66),119,  4) ((00-01-66),118,  4)
   ---------------------------------------------------------------------------

    Remote Chassis ID Subtype: Mac address (4)
    Remote Chassis ID:  4c:76:25:f4:ab:03
    Remote Port Subtype:  Interface name (5)
    Remote Port ID:  fortyGigE 1/2/8/1
    Local Port ID: TenGigabitEthernet 1/2
    Locally assigned remote Neighbor Index: 3
    Remote TTL:  300
    Information valid for next 199 seconds
    Time since last information change of this neighbor:  00:01:41
    UnknownTLVList:
    OrgUnknownTLVList:
         ((00-01-66),127,  4) ((00-01-66),126,  4) ((00-01-66),125,  4) ((00-01-66),124,  4) ((00-01-66),123,  4)
         ((00-01-66),122,  4) ((00-01-66),121,  4) ((00-01-66),120,  4) ((00-01-66),119,  4) ((00-01-66),118,  4)
   ---------------------------------------------------------------------------

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