7-8
Default Level
2: System level
Parameters
no-user-binding
: Specifies the port not to record the clients’ IP-to-MAC bindings in DHCP requests it
receives. The command without this keyword records the IP-to-MAC bindings of clients.
Description
Use the
dhcp-snooping trust
command to configure a port as a trusted port.
Use the
undo dhcp-snooping trust
command to restore the default state of a port.
All ports are untrusted by default.
After enabling DHCP snooping, you need to specify the ports connected to the valid DHCP servers as
trusted to ensure that DHCP clients can obtain valid IP addresses.
Related commands:
display dhcp-snooping trust
.
Examples
# Specify GigabiEthernet 1/0/1 as a trusted port and enable it to record the IP-to-MAC bindings of
clients.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabiEthernet1/0/1] dhcp-snooping trust
display dhcp-snooping
Syntax
display dhcp-snooping
[
ip ip-address
]
View
Any view
Default Level
1: Monitor level
Parameters
ip
ip-address
: Displays the DHCP snooping entries corresponding to the specified IP address.
Description
Use the
display dhcp-snooping
command to display DHCP snooping entries.
Only the DHCP snooping entries containing IP-to-MAC bindings that are present both in the
DHCP-ACK and DHCP-REQUEST messages are displayed by using the
display dhcp-snooping
command.
Summary of Contents for E4510-48G
Page 109: ...2 18 Sysname interface bridge aggregation 1 Sysname Bridge Aggregation1 shutdown ...
Page 309: ...6 4 Sysname interface vlan interface 1 Sysname Vlan interface1 ip address dhcp alloc ...
Page 324: ...8 3 Sysname interface vlan interface 1 Sysname Vlan interface1 ip address bootp alloc ...
Page 530: ...2 5 Sysname mvlan 100 subvlan 10 to 15 ...
Page 739: ...8 15 Sysname system view Sysname port security trap addresslearned ...
Page 819: ...13 11 Sysname system view Sysname public key peer key2 import sshkey key pub ...
Page 914: ...5 17 Sysname reset oam ...
Page 1064: ...5 30 Slot 2 Set next configuration file successfully ...
Page 1325: ...21 13 Examples Redirect to member 2 Sysname irf switch to 2 Sysname Slave 2 ...