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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

Configuration Guidelines

The guidelines in this section apply to SEFOS DHCP configurations.

Refer to the Sun Ethernet Fabric Operating System CLI Base Reference Manual for the complete set of commands and the various options available for configuring DHCP.

DHCP Client

The DHCP server must assign an IP address to the router interface. If it does not, the DHCP renew command fails and displays the following error message:

Interface does not have a DHCP originated address

DHCP Relay Agent

The following requirements must be satisfied for the DHCP relay agent to work properly:

Once the relay agent becomes active, it forwards the packets from the client to a DHCP server. The relay agent also performs any processing related to relay agent information options, such as inserting the necessary options while relaying a packet from a client to a server, and examining or stripping options when relaying a packet from a server to a client.

DHCP Server

The DHCP server has the following requirement and assumption about pool address assignment: