Juniper Networks J-Series manual Verifying the Dhcp Binding Database

J-series™ Services Router Administration Guide

[edit]

user@host# show system services dhcp pool 192.168.2.0/24 {

address-range low 192.168.2.2 high 192.168.2.254; exclude-address {

192.168.2.33;

}

maximum-lease-time 2419200; default-lease-time 1209600; name-server {

192.168.10.2;

}

domain-search { mycompany.net; mylab.net;

}

option 16 ip-address 192.168.2.33;

}

static-binding 01.03.05.07.09.0b { fixed-address {

192.168.2.50;

}

}

Meaning Verify that the output shows the intended configuration of the DHCP server.

Related Topics For more information about the format of a configuration file, see the J-series Services Router Basic LAN and WAN Access Configuration Guide.

Verifying the DHCP Binding Database

Purpose Verify that the DHCP binding database reflects your DHCP server configuration.

Action From operational mode in the CLI, to display all active bindings in the database, enter the show system services dhcp binding command. To display all bindings in the database, including their current binding state, enter the show system services dhcp binding detail command. To display more information about a client, including its DHCP options, enter the show system services dhcp binding ip-addressdetail command, replacing ip-addresswith the IP address of the client.

The DHCP binding database resulting from the configuration defined in “Configuring the DHCP Server with a Configuration Editor” on page 72 is displayed in the following sample output.

To clear the DHCP binding database, enter the clear system services dhcp binding command. To remove a specific entry from the DHCP binding database, enter the clear system services dhcp binding ip-addresscommand, replacing ip-addresswith the IP address of the client.

You can also use the J-Web interface to view information in the DHCP binding database. For more information, see “Monitoring DHCP” on page 143.

user@host> show system services dhcp binding

76■ Verifying the DHCP Binding Database