154Step Command Remarks2. Set the DSCP value for DHCPpackets sent by the DHCPclient.dhcp client dscpdscp-valueBy default, the DSCP value in DHCPpackets sent by the DHCP client is 56.Display and maintenance commands for DHCPclientExecute display command in any view.Task CommandDisplay DHCP client information. display dhcp client [ verbose ] [ interface interface-typeinterface-number ]DHCP client configuration examplesExample: Configuring DHCP clientNetwork configurationAs shown in Figure 44, Router B contacts the DHCP server through GigabitEthernet 1/0/1 to obtainan IP address, a DNS server address, and static route information. The DHCP client's IP addressresides on subnet 10.1.1.0/24. The DNS server address is 20.1.1.1. The next hop of the static routeto subnet 20.1.1.0/24 is 10.1.1.2.The DHCP server uses Option 121 to assign static route information to DHCP clients. Figure 43shows the Option 121 format. The destination descriptor field contains the following parts: subnetmask length and destination network address, both in hexadecimal notation. In this example, thedestination descriptor is 18 14 01 01 (the subnet mask length is 24 and the network address is20.1.1.0 in dotted decimal notation). The next hop address is 0A 01 01 02 (10.1.1.2 in dotted decimalnotation).Figure 43 Option 121 formatFigure 44 Network diagramRouter BDHCP ClientDNS serverRouter ADHCP serverGE1/0/110.1.1.1/24GE1/0/1 Router C10.1.1.2/24 20.1.1.2/2420.1.1.1/24
