Dhcp Relay Configuration Example - 3Com 3C13636 Configuration Manual

Router 3000 ethernet family

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3Com Router 3000 Ethernet Family

Configuration Guide

[3Com-dhcp-1] expired day 10 hour 12

# Configure attributes for DHCP address pool 2 (address pool range, egress gateway

address, NetBIOS address and address lease limit).

[3Com] dhcp server ip-pool 2

[3Com-dhcp-2] network 10.1.1.128 mask 255.255.255.128

[3Com-dhcp-2] expired day 5

[3Com-dhcp-2] nbns-list 10.1.1.4

[3Com-dhcp-2] gateway-list 10.1.1.254

9.9.2 DHCP Relay Configuration Example

I. Network requirements

The segment for DHCP client is 10.110.0.0 and that for DHCP server is 202.38.0.0. A

router which supports DHCP relay function is required for forwarding DHCP messages,

so that DHCP client can request configuration information (for example IP address)

successfully from DHCP server.

DHCP server is configured with an IP address pool whose segment is 10.110.0.0, so

the IP addresses can be allocated to the DHCP clients on this segment. DHCP server is

also configured with routes to the segment 10.110.0.0.

II. Networking topology

Figure 9-7 DHCP relay configuration

III. Configuration procedure

Configurations on the router:

# Enable DHCP services

[3Com] dhcp enable

# Enter an interface where DHCP relay function has been enabled, configure IP

address and mask for it, and ensure that the interface and DHCP client are in the same

[3Com] interface ethernet 6/0/0

3Com Corporation

Chapter 9 DHCP Configuration

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3c13636-us - router 3036 3000 series