Enabling The Dhcp Snooping Binding Database Agent - Cisco IE-3000-8TC Software Configuration Manual

Chapter 23 Configuring DHCP Features and IP Source Guard

Enabling the DHCP Snooping Binding Database Agent

Beginning in privileged EXEC mode, follow these steps to enable and configure the DHCP snooping
binding database agent on the switch:
Command
Step 1 configure terminal
Step 2 ip dhcp snooping database
{flash:/filename |
ftp://user:password@host/filename |
http://[[username:password]@]{hostna
me | host-ip}[/directory]
/image-name.tar |
rcp://user@host/filename}|
tftp://host/filename
Step 3
ip dhcp snooping database timeout
seconds
Step 4 ip dhcp snooping database write-delay
seconds
Step 5 end
Step 6
ip dhcp snooping binding mac-address
vlan vlan-id ip-address interface
interface-id expiry seconds
Step 7
show ip dhcp snooping database
[detail]
Step 8
copy running-config startup-config
To stop using the database agent and binding files, use the no ip dhcp snooping database global
configuration command. To reset the timeout or delay values, use the ip dhcp snooping database
timeout seconds or the ip dhcp snooping database write-delay seconds global configuration
command.
To clear the statistics of the DHCP snooping binding database agent, use the clear ip dhcp snooping
database statistics privileged EXEC command. To renew the database, use the renew ip dhcp snooping
database privileged EXEC command.
To delete binding entries from the DHCP snooping binding database, use the no ip dhcp snooping
binding mac-address vlan vlan-id ip-address interface interface-id privileged EXEC command. Enter
this command for each entry that you want to delete.
OL-13018-03
Purpose
Enter global configuration mode.
Specify the URL for the database agent or the binding file by using one
of these forms:
flash:/filename
•
ftp://user:password@host/filename
•
http://[[username:password]@]{hostname | host-ip}[/directory]
•
/image-name.tar
rcp://user@host/filename
•
tftp://host/filename
•
Specify (in seconds) how long to wait for the database transfer process to
finish before stopping the process.
The default is 300 seconds. The range is 0 to 86400. Use 0 to define an
infinite duration, which means to continue trying the transfer
indefinitely.
Specify the duration for which the transfer should be delayed after the
binding database changes. The range is from 15 to 86400 seconds. The
default is 300 seconds (5 minutes).
Return to privileged EXEC mode.
(Optional) Add binding entries to the DHCP snooping binding database.
The vlan-id range is from 1 to 4904. The seconds range is from 1 to
4294967295.
Enter this command for each entry that you add.
Use this command when you are testing or debugging the switch.
Note
Display the status and statistics of the DHCP snooping binding database
agent.
(Optional) Save your entries in the configuration file.
Cisco IE 3000 Switch Software Configuration Guide
Configuring DHCP Snooping
23-11