Dell C9000 Series Networking Configuration Manual page 392

specify the parameters that they require, and the server sends only those parameters. Some common options
are shown in the following illustration.
Figure 33. DHCP packet Format
The following table lists common DHCP options.
Option Number and Description
Subnet Mask Option 1
Specifies the client's subnet mask.
Router Option 3
Specifies the router IP addresses that may serve as the client's default gateway.
Domain Name Option 6
Server
Specifies the domain name servers (DNSs) that are available to the client.
Domain Name Option 15
Specifies the domain name that clients should use when resolving hostnames via DNS.
IP Address Lease Option 51
Time
Specifies the amount of time that the client is allowed to use an assigned IP address.
DHCP Message Option 53
Type
Parameter Request Option 55
List
• 1: DHCPDISCOVER
• 2: DHCPOFFER
• 3: DHCPREQUEST
• 4: DHCPDECLINE
• 5: DHCPACK
• 6: DHCPNACK
• 7: DHCPRELEASE
• 8: DHCPINFORM
Dynamic Host Configuration Protocol (DHCP) 392