dhcp snooping check mac-address

Use dhcp snooping check mac-address to enable MAC address check for DHCP snooping.

Use undo dhcp snooping check mac-address to disable MAC address check for DHCP snooping.

Syntax

dhcp snooping check mac-address

undo dhcp snooping check mac-address

Default

MAC address check for DHCP snooping is disabled.

Views

Layer 2 Ethernet interface/Layer 2 aggregate interface view

S-channel interface/S-channel aggregate interface view

VSI interface/VSI aggregate interface view

Predefined user roles

network-admin

Usage guidelines

With MAC address check enabled, DHCP snooping compares the chaddr field of a received DHCP request with the source MAC address field in the frame header. If they are the same, DHCP snooping considers this request valid and forwards it to the DHCP server. If they are not the same, DHCP snooping discards the DHCP request.

Examples

# Enable MAC address check for DHCP snooping.

<Sysname> system-view
[Sysname] interface Ten-GigabitEthernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] dhcp snooping check mac-address