Installation guide

Command Line Interface
4-158
4
show web-auth summary
This command displays a summary of web authentication port parameters and
statistics.
Command Mode
Privileged Exec
Example
DHCP Snooping Commands
DHCP snooping allows a switch to protect a network from rogue DHCP servers or
other devices which send port-related information to a DHCP server. This
information can be useful in tracking an IP address back to a physical port. This
section describes commands used to configure DHCP snooping.
Console#show web-auth summary
Global Web-Auth Parameters
System Auth Control : Enabled
Port Status Authenticated Host Count
---- ------ ------------------------
1/ 1 Disabled 0
1/ 2 Enabled 8
1/ 3 Disabled 0
1/ 4 Disabled 0
1/ 5 Disabled 0
.
.
.
Table 4-45 DHCP Snooping Commands
Command Function Mode Page
ip dhcp snooping Enables DHCP snooping globally GC 4-159
ip dhcp snooping vlan Enables DHCP snooping on the specified VLAN GC 4-160
ip dhcp snooping trust Configures the specified interface as trusted IC 4-161
ip dhcp snooping verify
mac-address
Verifies the client’s hardware address stored in the DHCP
packet against the source MAC address in the Ethernet header
GC 4-162
ip dhcp snooping
information option
Enables or disables DHCP Option 82 information relay GC 4-163
ip dhcp snooping
information policy
Sets the information option policy for DHCP client packets that
include Option 82 information
GC 4-164
ip dhcp snooping
database flash
Writes all dynamically learned snooping entries to flash
memory
PE 4-164
clear ip dhcp snooping
database flash
Removes all dynamically learned snooping entries from flash
memory.
PE 4-165
show ip dhcp snooping Shows the DHCP snooping configuration settings PE 4-165
show ip dhcp snooping
binding
Shows the DHCP snooping binding table entries PE 4-165