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Sun Ethernet Fabric Operating System

DHCP Administration Guide

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Document Information

Using This Documentation

Product Notes

Related Documentation

Acronyms and Abbreviations

CLI Command Modes

Feedback

Support and Accessibility

Protocol Description

DHCP Server

DHCP Client

DHCP Relay Agent

Configuring DHCP

Two-Switch Configuration

Multiple-Switch Configuration

Configuration Guidelines

Default Configurations

Enabling and Disabling the DHCP Server

Enable the DHCP Server

Disable the DHCP Server

Enable ICMP Echo

Specify the Amount of Time After Which an IP Address Is Made Available

Configure the Next Server

Configure the Boot File Name

Configuring DHCP Global Options

Configure DHCP Global Options

Delete DHCP Global Options

Configuring Address Pools

Configure DHCP Address Pools

Configure the End IP for the Address Pool

Configure the Lease Time

Configure the Utilization Threshold

Create an Excluded Address in the Pool

Configuring Pool-Specific Options

Configure a Domain Name Option

Configure the DNS Option

Configure the NetBIOS Name Server

Configure the NetBIOS Node Type

Configure the Default Router

Remove a Configured Default Router Subnet Option

Configure Options Specific to Address Pools

Configure Host-Specific Options

Enabling and Disabling Debug Traces for the DHCP Server

Enable Debug Traces for the DHCP Server

Disable Debug Traces for the DHCP Server

Configuring an Interface to Acquire or Use an IP Address

Configure an Interface to Acquire a Dynamic IP Address

Delete a Binding Entry From the Server

Configure an Interface to Use a Manual IP Address

Enable DHCP Relay

Configure a DHCP Server Address

Configuring Relay Agent Options

Enable the Relay Agent Information

Configure Relay Agent Suboptions

Enable Traces for the DHCP Relay Agent

Acquire an IP Address From a Server Residing Outside the Client Network

Configure the Next Server

You can configure the IP address for the next server so the client avoids unnecessary broadcast packets if the server that offered the IP address is currently unavailable for renewal. In this example, the next server in the DHCP configuration is assigned an IP address of 12.0.0.5.

  1. Configure the server's IP address in switch 1.
    SEFOS# configure terminal
    SEFOS(config)# ip dhcp next-server 12.0.0.5
    SEFOS(config)# end
  2. View the changes to the configuration in switch 1.
    SEFOS# show ip dhcp server information
     
    DHCP server status                         : Enable
    Send Ping Packets                          : Enable
    Debug level                                : None
    Server Address Reuse Timeout               : 10 secs
    Next Server Address                        : 12.0.0.5
    Boot file name                             :