User Manual

279
Users Manual of XGS-6350-24X4C
no Ip-source trust Resumes an interface to the one with a
distrusted source IP address.
Configuring the TFTP Server for Backing up Interface Binding
After the switch configuration is rebooted, the previously-configured interface binding will be lost. In this case,
there is no binding relationship on this interface. After source IP address monitoring is enabled, the switch
rejected forwarding all IP packets. After the TFTP server is configured for interface binding backup, the
binding relationship will be backed up to the server through the TFTP protocol. After the switch is restarted,
the switch automatically downloads the binding list from the TFTP server, securing the normal running of the
network.
Run the following commands in global configuration mode.
Command Purpose
ip dhcp-relay snooping database-agent
ip-address
Configures the IP address of the TFTP server
which is to back up interface binding.
no ip dhcp-relay snooping database-agent
Cancels the TFTP Server for backing up
interface binding.
Configuring a File Name for Interface Binding Backup
When backing up the interface binding relationship, the corresponding file name will be saved on the TFTP
server. In this way, different switches can back up their own interface binding relationships to the same TFTP
server.
Run the following commands in global configuration mode.
Command Purpose
ip dhcp-relay snooping db-file name
Configures a file name for interface binding
backup.
no ip dhcp-relay snooping db-file Cancels a file name for interface binding
backup.
Configuring the Interval for Checking Interface Binding Backup
The MAC-to-IP binding relationship on an interface changes dynamically. Hence, you need check whether the
binding relationship updates after a certain interval. If the binding relationship updates, it need be backed up
again. The default interval is 30 minutes.
Run the following commands in global configuration mode.
Command Purpose
ip dhcp-relay snooping write num
Configures the interval for checking interface
binding backup.