Digi TransPort WR21 - Delete a Neighbor Discovery Protocol (NDP) Cache

Digi TransPort WR21

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Configuring network interfaces Configure IPv6 addressing support

Digi TransPort® Routers User Guide

352

Delete a Neighbor Discovery Protocol (NDP) cache

Command line

Use the command ndp -d <entity> <instance>. Omitting the <entity> and <instance> parameters

deletes all NDP caches for all interfaces.

ndp - d et h 0

Table of Contents

Default Chapter4
- Table of Contents4
Digi Transport® Routers15
- Transport WR1115
- Transport WR2117
- Transport WR3118
- Transport WR4120
- Transport WR44 / WR44 R21
- Transport WR44 RR22
Hardware Features23
- Transport WR11 Hardware Features24
- Transport WR21 Hardware Features35
- Transport WR31 Hardware Features45
- Transport WR41 Hardware Features64
- Transport WR44 / WR44 R Hardware Features76
- Transport WR44 RR Hardware Features91
- Signal Strength Indicators102
- Antenna Specifications for Wi-Fi 2.4 Ghz Modules103
Using the Web Interface104
- Log in to the Device105
- Log out and Return to the Login Page107
- Execute a Command from the Web Interface108
- Signal Strength Indicators on the Mobile Status Page109
- Use the Web Interface Wizards110
Using the Command-Line Interface118
- About the Digi Transport Command Line Interface119
- Supported Command Types120
- Required Software for Using the Command Line121
- Connect to the Transport Router from a PC122
- Log in to the Command Line Interface123
- Exit the Command Line Interface124
- Commands and the Active Port125
- When Commands Take Effect126
- View Current Configuration Changes127
- Save Changes128
- Configure Network Settings129
- Establish a Remote Connection131
- Application Commands132
- AT Commands152
Configuring Network Interfaces179
- Configure Ethernet Interfaces179
- Configure Wi-Fi Interfaces208
- Configure Mobile (Cellular) Interfaces223
- Configure DSL Interfaces257
- Configure Generic Routing Encapsulation (GRE) Interfaces267
  - Configure GRE Tunnel Parameters268
  - Configure Advanced GRE Parameters271
- Configure ISDN Interfaces273
- Configure PSTN Interfaces293
  - Configure Advanced PSTN Parameters298
- Configure Dialserv Interfaces302
  - Configure Dialserv Network Settings303
  - Configure Advanced Dialserv Parameters307
- Configure Serial Interfaces311
- Configure Ipv6 Addressing Support335
- Configure PPP and External Modems357
Configuring DHCP Servers396
- About DHCP Servers397
- Configure DHCP Server for Ethernet Interfaces398
- Configure Advanced DHCP Parameters401
- Configure Advanced DHCP Options402
- Configure DHCP Options404
- Configure Static Lease Reservations406
Configuring Network Services408
- Configure Network Services409
Configuring DNS414
- Configure DNS Servers415
  - DNS Server N Parameters415
- DNS Server Update Parameters416
- Configure Dynamic DNS (Dyndns)420
  - Dynamic DNS Parameters420
  - Advanced Dynamic DNS Parameters423
Configuring IP Routing and Forwarding425
- Supported Routes426
- View the Transport Routing Table428
- Configure Route Metrics429
- Configure IP Routing Parameters430
- Configure Static Routes433
  - Advanced Static Route Parameters434
  - Related CLI Commands437
- Configure Default IP Routes441
  - Advanced Default Route Parameters442
- Configure Routing Information Protocol (RIP) Settings447
- Configure Open Shortest Path First (OSPF) Parameters453
- Configure Border Gateway Protocol (BGP) Settings456
- Configure IP Port Forwarding and Static NAT Mappings458
- Configure Multicast Routes460
- Configure Virtual Routing and Forwarding (VRF)462
Configuring Virtual Private Networking (VPN)468
- Virtual Private Networks (Vpns)469
- Configure Internet Protocol Security (Ipsec)470
- Configure Point-To-Point Tunneling Protocol (PPTP)525
- Configure Openvpn527
  - Additional Information on Openvpn Configuration527
  - Supported Cipher and Digest Values for Openvpn534
Configuring Secure Sockets Layer (SSL)535
- About the Secure Sockets Layer (SSL)536
- Configure the SSL Server537
- Configure SSL Clients539
Configuring Secure Shell (SSH) Server and Client541
- About the Secure Shell (SSH) Server542
- Configure SSH Servers543
- Configure the SSH Client548
- Generate SSH Private Keys553
- Perform SSH Authentication with a Public/Private Key Pair555
Configuring FTP Relay556
- Configure FTP Relay557
Configuring IP Passthrough562
- Configure IP Passthrough563
Configuring UDP Echo566
- Configure a UDP Echo Client567
Configuring Quality of Service (Qos)569
- Configure Quality of Service (Qos)570
Configuring Time Bands577
- Configure a Time Band578
- Enable and Disable Time Bands for a PPP or Wi-Fi Interface580
Configuring Advanced Network Settings582
- Configure Advanced Network Settings583
  - Configure First Settings Group583
Configuring Legacy Protocols590
- About Legacy Protocols590
- Configure Systems Network Architecture over IP (SNAIP)591
  - Forcing SNAIP to Use a Specific Instance598
- Configure TPAD Parameters599
  - Set TPAD Parameters604
- Configure X.25 Parameters613
- Configure a MODBUS Gateway657
- Configure Protocol Switch Software661
Configuring Alarms680
- Configure Events to Trigger Alarms681
- Edit Event Descriptions697
  - Configure Event Logcodes699
  - Configure Handling of the Reasons for an Event702
- Configure an SMTP Email Account to Send Alarms704
Configuring System Settings707
- Set Device Identity Parameters708
- Set System Date and Time710
- Set Commands to Run Automatically at Bootup721
- Set Web and Command Line Interface Options722
- Set Miscellaneous System Options725
- Set Power Control Options727
- Set Temperature Monitoring731
Configuring Remote Management732
- Use Digi Remote Manager to Manage Devices733
- Use SNMP for Remote Management743
Configuring Security751
- Configure System Security Settings752
- Configure User Security Settings754
  - Configure Advanced User Settings756
  - Change the Default Username and Password for a User758
- Firewall759
- Use a RADIUS Client for Authentication801
  - Configure Advanced RADIUS Client Parameters804
- Use TACACS+ to Control Access to the Router805
- Use Command Filtering810
  - Enable Command Filtering811
  - Set Calling Numbers to Answer or Reject812
Configuring Telemetry (GPS)814
- Configure GPS Parameters815
- Configure WR31 Cellular GPS820
- Configure GPS Support for the GOBI3000 Module822
Managing Applications and Programs823
- Manage Scriptbasic Applications823
- Manage Python Applications825
Managing Networks and Connections827
- Show Network Interface Status827
- Manage Connections871
- Show GPS Data881
- View and Manage the Event Log883
- Analyze Data Traffic885
- Use the Top Talkers Monitor894
  - Configure Top Talkers Monitor895
  - Show the Top Talkers Trace896
Performing Device Administration Tasks897
- View System Information897
- Manage Files900
- Manage X.509 Certificates and Host Key Pairs920
- Back up and Restore Configuration Settings932
- Update Firmware934
- Reset the Router to Factory Defaults936
  - Using the Web Interface936
  - Using the Reset Button on the Router937
- Save Configuration Settings to a File938
  - Save the Current Configuration938
  - Save All: Save the Entire Configuration938
- Execute a Command from the Web Interface940
- Reboot the Router941
Troubleshooting942
- Troubleshooting Resources943
- Download the Debug.txt File944
- Cannot Open the Web Interface946
- Cannot Log into the Web Interface947
- Troubleshoot the LTE-MIMO Antenna Orientation948

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