Dynamic Host Configuration Protocol; Configuring Dhcp Relay Service - SMC Networks SMC8748ML3 Management Manual

Gigabit ethernet switch

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ONFIGURING THE

Dynamic Host Configuration Protocol

Dynamic Host Configuration Protocol (DHCP) can dynamically allocate

an IP address and other configuration information to network clients

when they boot up. If a subnet does not already include a BOOTP or

DHCP server, you can relay DHCP client requests to a DHCP server on

another subnet, or configure the DHCP server on this switch to support

that subnet.

When configuring the DHCP server on this switch, you can configure an

address pool for each unique IP interface, or manually assign a static IP

address to clients based on their hardware address or client identifier. The

DHCP server can provide the host's IP address, domain name, gateway

router and DNS server, information about the host's boot image including

the TFTP server to access for download and the name of the boot file, or

boot information for NetBIOS Windows Internet Naming Service

This switch supports

DHCP relay service for

attached host devices. If

DHCP relay is enabled,

and this switch sees a

DHCP request broadcast,

it inserts its own IP

address into the request

so that the DHCP server will know the subnet where the client is located.

Then, the switch forwards the packet to the DHCP server. When the

server receives the DHCP request, it allocates a free IP address for the

DHCP client from its defined scope for the DHCP client's subnet, and

sends a DHCP response back to the DHCP relay agent (i.e., this switch).

This switch then broadcasts the DHCP response received from the server

to the client.

Provides IP address

compatible with switch

segment to which client