IBM NH2025-10 Address Resolution Protocol (ARP)

Configuring, Modifying, and Monitoring the Unit

26

To activate/deactivate bootp use the following commands:

set-bootp — Enables or disables the bootp process activation.

get-bootp — Retrieves the state of the bootp process.

Address Resolution Protocol (ARP)

To view the ARP commands, enter ARP at the CLI prompt. The following are the available

ARP commands.

get-arp-tbl

The get-arp-tbl command displays the ARP table. The ARP table contains information

relating IP addresses to MAC addresses and interface numbers. It also shows the TTL (Time-

To-Live) value for each entry.

Example

SYS_console>get-arp-tbl

If Ip MAC TTL

=============================================

01 194.090.136.254 08-00-87-1d-9b-32 1200

01 194.090.136.010 00-20-1a-01-3f-18 1200

01 194.090.136.028 08-00-09-9d-5e-30 900

SYS_console>

del-arp-entry

The del-arp-entry command deletes entries from the ARP table. If an IP address is specified,

the matching arp entry is deleted. If * is specified, the entire ARP table is flushed. This

command should be used if the network topology has physically changed, e.g. if a management

station has been moved from one segment to another, thus changing its interface number.

del-arp-entry {<IP address>|*}

add-arp-entry

The add-arp-entry command adds an entry to the ARP table.

add-arp-entry <IP address> <mac_address> <Interface>

Example

SYS_console>add-arp-entry 194.90.136.133 00-11-22-33-44-55 1

ARP Table Entry successfully added

SYS_console>

Contents

Main Page Standards Compliance FCC Notice CE Mark VCCI Page Contents Page Page Page Overview Applications Network Management Systems Feature Summary Performance/Configuration Management Page Installing and Setting Up the Unit Installing the Unit Rack Mounting Front Panel Rear Panel Installing Modules in the Unit Modules for NH 2025-10 EM2003-1GE EM2003-2FO EM2003-8TP Em2003-2GE* Connecting Power to the Unit Input Supply Grounding Connecting Ethernet Devices Connecting Your Network Page Getting Started Connecting to the Management Port Logging Into the Command Line Interface Setting the IP Address Verifying the Installation Accessing the Command Line Interface Remotely Using the Command Line Interface Command Conventions Command Line Help Getting Command Parameter Help Getting Command Group Help Using Command Wildcards Retrieving Command History Command Line Errors Nonexistent Command Incorrect Number of Parameters Configuring, Modifying, and Monitoring the Unit Console Commands Page Page System Commands Page Page IP Commands IP Configuration Setting an IP address Erasing an IP Configuration Configuring a Gateway Bootp Configuration Address Resolution Protocol (ARP) Port configuration Displaying the Port Configuration Setting the port configuration Setting the flow control EtherChannel Getting the EtherChannel Configuration Setting the EtherChannel Configuration Deleting the EtherChannel Configuration Port Priority Set Port Priority Get Port Priority VLAN Priority Modifying the Switch Policy Spanning Tree Protocol (STP) How the STP Topology Stabilizes Spanning Tree Parameters Root Bridge Manually Designating a Root Bridge Selecting a Designated Switch/Bridge Topology Change Notification BPDU Using STP to Manage Redundant Links Spanning Tree and VLAN restrictions Spanning Tree Commands Enabling/Disabling STP Viewing Bridge Parameters Configuring the Bridge Viewing the Port Configuration Setting Port Configuration Page Switching Commands Learning Table Aging Configuration Page Page Deleting Entries Adding Static Entries Virtual Broadcast Domain Viewing the VBC Mode Setting the VBC mode Creating VBC Domains Viewing VBC Matrix Deleting a VBC Virtual Networking Important Considerations Viewing the VLAN Mode Setting the VLAN Mode Inter-Switch VLAN or ISVLAN Tag Field Format Principles of ISVLAN Viewing the ISVLAN Mode Setting a Tagged Port Server Port Creating a Server Port Removing a Server Port VLAN Creating a VLAN Viewing VLAN Configuration Deleting a VLAN VLAN Management Viewing the Management Tag Modifying the Management Tag Deleting the Management from a VLAN Creating a VLAN with Port Management VLAN, Server-port, Example of Configuration Physical configuration schema VLAN Server Port Configuration: VLAN Configuration Payroll VLAN Configuration: Finance VLAN Configuration: Checking the Configuration: Utilities Commands Ping Commands Port mirroring Setting the Monitoring Port Monitoring with: monitor Saving the Configuration Stopping Monitoring Viewing the NVRAM Configuration Frame Generator Setting the Frame Generator Starting the Frame Generation Stopping the Frame Generation SNMP NBase-Xyplex SNMP Support SNMP basic configuration SNMP Community String Commands Viewing the Community String Setting the Read or Write Community SNMP Traps Setting Authentication Traps Viewing the Authentication Trap Status Setting the Authentication Trap Configuring the Trap Stations Statistics Clearing the Switch Counters Getting Collisions on a Port Rmon Statistics Getting Rmon Statistics Group for a Port Getting the Packet Size Distribution Getting the Management Counters Page Trouble Shooting Page Commands Quick Reference Console Commands System Commands IP Commands Ping Commands ARP Commands EtherChannel Commands SNMP Commands Switching Database Commands Virtual LAN Commands Port Monitoring Port Configuration Commands Switching Statistics Commands Spanning Tree Commands Page Appendix A System Default Values Page Appendix B Firmware Download Using TFTP Download Procedure - "Client Mode" Download Procedure - "Server mode" TFTP Recovery - Breaking into the BootROM Appendix C Technical Specifications