Dell S5148F-ON OS10 Enterprise Edition User Guide Release 10.3.2E-R1 - Page 326
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The table shows common options using DHCP packet formats. Subnet mask 1 - Client's subnet mask Router 3 - Router IP addresses that serve as the client's default gateway Domain name server 6 - Domain name servers (DNS) that are available to the client Domain name 15 - Domain name that clients use to resolve hostnames via DNS IP address lease time 51 - Amount of time that the client can use an assigned IP address DHCP message type 53: • 1 - DHCPDISCOVER • 2 - DHCPOFFER • 3 - DHCPREQUEST • 4 - DHCPDECLINE • 5 - DHCPACK • 6 - DHCPNACK • 7 - DHCPRELEASE • 8 - DHCPINFORM Parameter request list Renewal time Rebinding time Vendor class identifier User port stacking End 55 - Parameters the server requires for DHCP clients. This is a series of octets where each octet is a DHCP option code 58 - Amount of time, after the IP address is granted, that the client attempts to renew its lease with the original server 59 - Amount of time, after the IP address is granted, that the client attempts to renew its lease with any server, if the original server does not respond 60 - User-defined string the Relay Agent uses to forward DHCP client packets to a specific DHCP server 230 - Stacking option variable to provide DHCP server stack-port details when the DHCP offer is set. 255 - Signal of the last option in the DHCP packet Configure Server The DHCP server provides network configuration parameters to DHCP clients on request. A DHCP server dynamically allocates four required IP parameters to each computer on the virtual local area network (VLAN) - the IP address, network mask, default gateway, and name server address. DHCP IP address allocation works on a client/server model where the server assigns the client reusable IP information from an address pool. 326 System management
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