Cisco Catalyst 3560X-24P Command Reference Manual page 649

Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands
Table 2-36
DHCP Snooping Statistic
Interface Down
Unknown output interface
Reply output port equal to input port
Packet denied by platform
Related Commands Command
clear ip dhcp snooping
OL-21522-02
DHCP Snooping Statistics (continued)
Description
Clears the DHCP snooping binding database, the DHCP
snooping binding database agent statistics, or the DHCP
snooping statistics counters.
Description
Number of times the packet is a reply to the DHCP relay
agent, but the SVI interface for the relay agent is down.
This is an unlikely error that occurs if the SVI goes down
between sending the client request to the DHCP server and
receiving the response.
Number of times the output interface for a DHCP reply
packet cannot be determined by either option-82 data or a
lookup in the MAC address table. The packet is dropped.
This can happen if option 82 is not used and the client
MAC address has aged out. If IPSG is enabled with the
port-security option and option 82 is not enabled, the MAC
address of the client is not learned, and the reply packets
will be dropped.
Number of times the output port for a DHCP reply packet
is the same as the input port, causing a possible loop.
Indicates a possible network misconfiguration or misuse of
trust settings on ports.
Number of times the packet has been denied by a
platform-specific registry.
Catalyst 3750-X and 3560-X Switch Command Reference
show ip dhcp snooping statistics
2-617