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Home Documentation Junos OS Junos CLI Reference CLI Reference D

Junos CLI Reference

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Junos CLI Reference
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dhcp-security

date_range 19-Nov-23
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Syntax

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dhcp-security {
    arp-inspection; 
    dhcpv6-options {
        light-weight-dhcpv6-relay;
        option-16 {
            use-string string;
        }
        option-18 {
            prefix {
                host-name;
                logical-system-name;
                routing-instance-name;
                vlan-id;
                vlan-name;
            }
            use-interface-mac;
            use-interface-index (device | logical);
            use-interface-description (device | logical); 
            use-interface-name (device | logical);
            use-string string;
        }
        option-37{
            prefix {
                host-name;
                logical-system-name;
                routing-instance-name;
                vlan-id;
                vlan-name;
            }
            use-interface-mac;
            use-interface-index (device | logical);
            use-interface-description (device | logical); 
            use-interface-name (device | logical);
            use-string string;
        }
        option-79; 
    }
    group group-name {
        interface interface-name {
            static-ip ip-address {
                mac mac-address;
            }
            static-ipv6 ip-address {
                mac mac-address;
            }
        }
        overrides {
            no-dhcpv6-options;
            no-option16;
            no-option18;
            no-option37;
            no-option82;
            trusted;
            untrusted;
        }
    }
    ip-source-guard; 
    ipv6-source-guard;
    mine-dhcp-client-options;
    mine-dhcpv6-client-options;
    neighbor-discovery-inspection;
    no-dhcp-snooping; 
    no-dhcpv6-snooping; 
    option-82 {
        circuit-id {
            prefix {
                host-name; 
                logical-system-name; 
                routing-instance-name;
            }
            use-interface-description (device | logical); 
            use-vlan-id; 
        }
        remote-id {
            host-name hostname; 
            use-interface-description (device | logical); 
            mac;
            use-string string;
        }
        vendor-id {
            use-string string;
        }
    }
}

Hierarchy Level

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[edit vlans vlan-name forwarding-options]

Description

Configure DHCP or DHCPv6 snooping on the switch. DHCP snooping is also enabled automatically if you configure any of the following port security features within this hierarchy:

  • Dynamic ARP inspection (DAI)

  • IP source guard

  • DHCP option 82

  • Static IP

For switches that support DHCPv6, both DHCP snooping and DHCPv6 snooping are enabled automatically if you configure any of the afore-mentioned features or any of the following IPv6 features:

  • IPv6 neighbor discovery inspection

  • IPv6 source guard

  • Static IPv6

The remaining statements are explained separately.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 13.2X50-D10 .

Support for static-ipv6, neighbor-discovery-inspection, ipv6-source-guard, no-dhcpv6-snooping, and no-option37 introduced in Junos OS Release 13.2X51-D20 for EX Series switches.

Support for dhcpv6-options, option-16, option-18, option-37, no-dhcpv6-options, no-option16, no-option18, and no-option37 introduced in Junos OS Release 14.2 for EX Series switches.

Support for mine-dhcp-client-options and mine-dhcpv6-client-options introduced in Junos OS Release 23.1.

Related Documentation

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