Dell FCX624-S Laptop User Manual


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PowerConnect B-Series FCX Configuration Guide 1353
53-1002266-01
DHCP snooping
39
To remove all entries from the DHCP binding database, enter the following command.
PowerConnect#clear dhcp
To clear entries for a specific IP address, enter a command such as the following.
PowerConnect#clear dhcp 10.10.102.4
Syntax: clear dhcp [<ip-addr>]
Displaying DHCP snooping status and ports
To display the DHCP snooping status for a VLAN and the trusted/untrusted port, use the show ip
dhcp snooping vlan command.
Syntax: show ip dhcp snooping [vlan <vlan-id>]
Displaying the DHCP snooping binding database
To display the DHCP snooping binding database, use the show ip dhcp snooping info command.
Syntax: show ip dhcp snooping info
Displaying DHCP binding entry and status
To display the DHCP binding entry and its current status, use the show arp command.
Syntax: show arp
For field definitions, refer to Table 161 on page 875.
DHCP snooping configuration example
The following example configures VLAN 2 and VLAN 20, and changes the CLI to the global
configuration level to enable DHCP snooping on the two VLANs. The commands are as follows.
PowerConnect#show ip dhcp snooping vlan 2
IP DHCP snooping VLAN 2: Enabled
PowerConnect#show ip dhcp snooping info
Dhcp snooping Info
Total learnt entries 1
SAVED DHCP ENTRIES IN FLASH
IP Address Mac Address Port vlan lease
0 10.10.10.20 0001.0002.0003 6/13 1112 361
PowerConnect#show arp
Total number of ARP entries: 2, maximum capacity: 6000
No. IP Address MAC Address Type Age Port Status
1 10.43.1.1 00e0.0001.c320 Dynamic 0 mgmt1 Valid
2 10.43.1.199 00e0.0002.b263 Dynamic 7 mgmt1 Valid