Dell PowerConnect B-FCXs Configuration Manual page 910

Powerconnect b-series fcx

Hide thumbs Also See for PowerConnect B-FCXs:

Table of Contents

Configuring IP parameters – Layer 2 Switches

The DHCP relay function of the connecting router must be turned on.

DHCP Server extracts the gateway

address from each packet and

assigns IP addresses for each

host within the appropriate

DHCP response with IP addresses

for Subnets 1, 2, 3 and 4

IP addresses are distributed

to the appropriate hosts.

When DHCP Assist is enabled on any port, Layer 2 broadcast packets are forwarded by the CPU.

Unknown unicast and multicast packets are still forwarded in hardware, although selective packets

such as IGMP are sent to the CPU for analysis. When DHCP Assist is not enabled, Layer 2 broadcast

packets are forwarded in hardware.

Configuring DHCP Assist

You can associate a gateway list with a port. You must configure a gateway list when DHCP Assist is

enabled on a Layer 2 Switch. The gateway list contains a gateway address for each subnet that will

be requesting addresses from a DHCP server. The list allows the stamping process to occur. Each

gateway address defined on the Layer 2 Switch corresponds to an IP address of the router interface

or other router involved.

DHCP offers are forwarded back toward the requestors

Layer 2 Switch

PowerConnect B-Series FCX Configuration Guide

53-1002266-01

Troubleshooting