Dell PowerConnect 5548P System User's Manual page 584

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Configuring DHCP Snooping Trusted Interfaces Using CLI Commands
The following table summarizes the CLI commands for configuring DHCP
snooping trusted interfaces
DHCP Snooping Trusted Interfaces
Table 19-4.
CLI Command
ip dhcp snooping trust
no ip dhcp snooping
trust
The following is an example of some of the CLI commands:
console(config)# interface gi1/0/5
console(config-if)# ip dhcp snooping trust
Snooping Binding Database
Entries in the DHCP Snooping Binding database consist of pairs of MAC/IP
addresses.
In addition to the entries added by DHCP snooping, entries to the Snooping
Binding database can be manually added or deleted. These entries are added
to the Snooping Binding database and Snooping Binding file, if it exists, but
they are not added to the configuration files.
A manually-added entry can be either dynamic or a static. When configuring
a dynamic entry, an expiration date must be assigned.
The refresh time (in seconds) of the binding table is added in the Global
Parameters pages.
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Contax\CxUGSwitching_DHCP.fm
.
Description
Configures an interface as trusted for DHCP
snooping purposes.
Use the no form of this command to return to the
default setting.
Dell PowerConnect 55xx Systems User Guide
CLI Commands
583