Specifications

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Catalyst 4500 Se ries S wit ch C is co IO S C om mand R efer ence —Re lease I OS XE 3 .3.0 XO(1 5.1 (1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ip dhcp snooping limit rate
ip dhcp snoopi ng limit rat e
To configure the number of the DHCP messages that an interface can receive per second, use the ip dhcp
snooping limit rate command. To disable the DHCP snooping rate limiting, use the no form of this
command .
ip dhcp snooping limit rate rate
no ip dhcp snooping limit rate
Syntax Description
Defaults DHCP snooping rate limiting is disabled.
Command Modes Interface configur ation mode
Usage Guidelines Typically, the rate limit applies to the untrusted interfaces. If you want to set up rate limiting for the
trusted interfaces, note that the trusted interfaces aggregate all DHCP traffic in the switch, and you will
need to adjust the rate limit of the interfaces to a higher value.
Examples This example shows how to enable the DHCP message rate limiting:
Switch(config-if)# ip dhcp snooping limit rate 150
Switch(config)#
This example shows how to disable the DHCP message r ate limiting:
Switch(config-if)# no ip dhcp snooping limit rate
Switch(config)#
Related Commands
rate Number of DHCP messages a switch can r eceive per second.
Command Description
ip dhcp snooping Globally enables DHCP snooping.
ip dhcp snooping information opt ion Enables DHCP option 82 data insertion.
ip dhcp snooping trust Enables DHCP snooping on a trusted VLAN.
ip dhcp snooping vlan Enables DHCP snooping on a VLAN or a gr oup of VLANs.
show ip dhcp snooping Displays the DHCP snooping configuration.
show ip dhcp snooping binding Displays the DHCP snooping binding entries.