3-7
Examples
# Configure the remote ID of Option 82 in DHCP packets to
abc
on the port Ethernet 1/0/1.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Ethernet1/0/1
[Sysname-Ethernet1/0/1] dhcp-snooping information remote-id string abc
dhcp-snooping trust
Syntax
dhcp-snooping trust
undo dhcp-snooping trust
View
Ethernet port view
Parameters
None
Description
Use the
dhcp-snooping trust
command to set an Ethernet port to a DHCP-snooping trusted port.
Use the
undo dhcp-snooping trust
command to restore an Ethernet port to a DHCP-snooping
untrusted port.
By default, with the DHCP snooping enabled, all the ports of a switch are untrusted ports.
Note that:
After DHCP snooping is enabled, you need to specify the port connected to a valid DHCP server as
trusted to ensure that DHCP clients can obtain valid IP addresses. The trusted port and the ports
connected to DHCP clients must be in the same VLAN.
Related commands:
display dhcp-snooping trust
.
Examples
# Enter system view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
# Set the Ethernet 1/0/1 port to a trusted port.
[Sysname] interface Ethernet1/0/1
[Sysname-Ethernet1/0/1] dhcp-snooping trust
display dhcp-snooping
Syntax
display dhcp-snooping
[
unit unit-id
]
View
Any view
Summary of Contents for 5500-EI PWR
Page 43: ...2 6...
Page 76: ...1 17...
Page 228: ...ii stp transmit limit 1 44 vlan mapping modulo 1 45 vlan vpn tunnel 1 46...
Page 477: ...5 24 Sysname vlan 2 Sysname vlan2 service type multicast...
Page 503: ...2 3 System View return to User View with Ctrl Z Sysname dot1x url http 192 168 19 23...
Page 519: ...iii...
Page 597: ...2 2 security policy server 192 168 0 1 user name format without domain...
Page 648: ...1 9 Examples Clear static ARP entries Sysname reset arp static...
Page 663: ...4 3 Sysname resilient arp interface vlan interface 2...
Page 767: ...1 28 From 12 00 Jan 1 2008 to 12 00 Jun 1 2008...
Page 1111: ...ii xmodem get 3 18...
Page 1314: ...A 44 Z...