Operation Manual – DHCP
H3C S3100 Series Ethernet Switches Chapter 2 DHCP Snooping Configuration
2-14
Operation Command Description
Enable IP filtering
ip check source
ip-address
[ mac-address ]
Required
By default, this function is
disabled.
Create an IP static binding
entry
ip source static binding
ip-address ip-address
[ mac-address
mac-address ]
Optional
By default, no static
binding entry is created.
 Note:
z Enable DHCP snooping and specify trusted ports on the switch before configuring
IP filtering.
z You are not recommended to configure IP filtering on the ports of an aggregation
group.
z To create a static binding after IP filtering is enabled with the mac-address keyword
specified on a port, the mac-address argument must be specified; otherwise, the
packets sent from this IP address cannot pass the IP filtering.
z A static entry has a higher priority than the dynamic DHCP snooping entry that has
the same IP address as the static one. That is, if the static entry is configured after
the dynamic entry is recorded, the static entry overwrites the dynamic entry; if the
static entry is configured before DHCP snooping is enabled, no DHCP client can
obtain the IP address of the static entry.
z The VLAN ID of the IP static binding configured on a port is the default VLAN ID of
the port.
2.4 Displaying DHCP Snooping Configuration
After the above configurations, you can verify the configurations by executing the
display command in any view.
To Next Page
Loading...
Need help?
General