Concept Guide
10.1.1.11 00:00:a0:00:00:00 39736 S Vl 200 Po 10
10.1.1.25 00:00:a0:00:00:00 162 D Vl 200 Po 10
Displaying the Contents of the DHCPv6 Binding Table
To display the contents of the DHCP IPv6 binding table, use the following command.
• Display the contents of the binding table.
EXEC Privilege mode
show ipv6 dhcp snooping biniding
Example of the show ipv6 dhcp snooping binding Command
View the DHCP snooping statistics with the show ipv6 dhcp snooping command.
DellEMC#show ipv6 dhcp snooping binding
Codes : S - Static D – Dynamic
IPv6 Address MAC Address Expires(Sec) Type VLAN Interface
=========================================================================
11:11::22 11:22:11:22:11:22 120331 S Vl 100 Te 1/1
33::22 11:22:11:22:11:23 120331 S Vl 200 Te 1/1
333:22::22 11:22:11:22:11:24 120331 D Vl 300 Te 1/2
Debugging the IPv6 DHCP
To debug the IPv6 DHCP, use the following command.
• Display debug information for IPV6 DHCP.
EXEC Privilege mode
debug ipv6 dhcp
IPv6 DHCP Snooping MAC-Address Verication
Congure to enable verify source mac-address in the DHCP packet against the mac address stored in the snooping binding table.
• Enable IPV6 DHCP snooping .
CONFIGURATION mode
ipv6 dhcp snooping verify mac-address
Conguring the DHCP secondary-subnet
DHCP Secondary subnet feature is an extended feature of DHCP relay agent. After enabling DHCP Relay Secondary Subnet, relay agent
tries to get IP Address from secondary IP Address subnet pool, only when relay agent fails to get IP Address through primary IP Address.
1 To enable all the DHCP relay secondary — subnet interfaces.
CONFIGURATION mode
ip dhcp relay secondary-subnet
2 Sample Conguration:
Dell(conf)#ip dhcp relay secondary-subnet
Dell(conf)#interface TenGigabitEthernet 0/0
314
Dynamic Host Conguration Protocol (DHCP)