Dhcp Snooping Configuration; Configuring Dhcp Snooping; Configuring Dhcp Snooping Trusted/Untrusted Ports - H3C S3100 8C SI Operation Manual

Operation Manual – DHCP
H3C S3100 Series Ethernet Switches
table or static binding table, the switch regards the packet as a valid packet and
forwards it; otherwise, the switch drops it directly.

2.2 DHCP Snooping Configuration

2.2.1 Configuring DHCP Snooping

Table 2-3 Configure DHCP snooping
Operation
Enter system view
Enable DHCP
snooping
Note:
After DHCP snooping is enabled on an S3100 Ethernet switch, clients connected
with this switch cannot obtain IP addresses dynamically through BOOTP.
You are not recommended to configure both the DHCP snooping and selective
Q-in-Q function on an S3100-EI switch, which may result in the DHCP snooping to
function abnormally.

2.2.2 Configuring DHCP Snooping Trusted/Untrusted Ports

Table 2-4 Configure DHCP Snooping Trusted/Untrusted Ports
Operation
Enter system view
Enter Ethernet port
view
Specify the current
port as a trusted port
Command
system-view
dhcp-snooping
Command
system-view
interface interface-type
interface-number
dhcp-snooping trust
2-7
Chapter 2 DHCP Snooping Configuration
Description
—
Required
By default, the DHCP snooping
function is disabled.
Description
—
—
Required
By default, after DHCP snooping
is enabled, all ports of the
S3100-EI switch are untrusted
ports.