3Com 4210G Series, Configuration Manual, Page: 11 / 1133

2-3
IP Services Volume
Table 2-2
Features in the IP Services volume
Features Description
IP Address
An IP address is a 32-bit address allocated to a network interface on a
device that is attached to the Internet. This document describes:
z
Introduction to IP addresses
z
IP address configuration
ARP
Address Resolution Protocol (ARP) is used to resolve an IP address into a
data link layer address. This document describes:
z
ARP Overview
z
Configuring ARP
z
Configuring Gratuitous ARP
z
Proxy ARP and Local Proxy ARP configuration
Proxy ARP
If a host sends an ARP request for the MAC address of another host that
actually resides on another network , the device in between must be able
to respond to the request with the MAC address of the receiving interface
to allow Layer 3 communication between the two hosts. This is achieved
by proxy ARP. This document describes:
z
Proxy ARP Overview
z
Configuring Proxy ARP
ARP Attack Defense
Currently, ARP attacks and viruses are threatening LAN security. The
device can provide multiple features to detect and prevent such attacks.
This document describes:
z
Configuring ARP Source Suppression
z
Configuring ARP Defense Against IP Packet Attacks
z
Configuring ARP Active Acknowledgement
z
Configuring Source MAC Address Based ARP Attack Detection
z
Configuring ARP Packet Source MAC Address Consistency Check
z
Configuring ARP Packet Rate Limit
z
Configuring ARP Detection
DHCP Overview
DHCP is built on a client-server model, in which the client sends a
configuration request and then the server returns a reply to send
configuration parameters such as an IP address to the client. This
document describes:
z
Introduction to DHCP
z
DHCP Address Allocation
z
DHCP Message Format
z
DHCP Options
z
Protocols and Standards
DHCP Relay Agent
Via a relay agent, DHCP clients communicate with a DHCP server on
another subnet to obtain configuration parameters. Thus, DHCP clients on
different subnets can contact the same DHCP server for ease of
centralized management and cost reduction. This document describes:
z
Introduction to DHCP Relay Agent
z
Configuring the DHCP Relay Agent
DHCP Client
With the DHCP client enabled on an interface, the interface will use DHCP
to obtain configuration parameters such as an IP address from the DHCP
server. This document describes:
z
Introduction to DHCP Client
z
Enabling the DHCP Client on an Interface