3-16
Catalyst 3750, 3560, 3550, 2975, 2970, and 2960 Switch System Message Guide
OL-8551-04
Chapter 3 Message and Recovery Proced ures
DHCP_SNOOPING Messages
Error Message DHCP_SNOOPING-4-NTP_NOT_RUNNING: NTP is not running; reloaded binding
lease expiration times are incorrect.
Explanation If the DHCP snooping database agent loads the DHCP snoop ing bindings and NTP is
not running, the calculated lease duration for the bindings is incorrect.
Recommended Action Configure NTP on the switch to provide an accurate time and date for the
system clock. Then disable and re-enable DHCP snooping to clear the DHCP snooping binding
database.
Error Message DHCP_SNOOPING-4-QUEUE_FULL: Fail to enqueue DHCP packet into
processing queue: [chars], the queue is most likely full and the packet will be
dropped.
Explanation The CPU is receiving DHCP at a higher rate than the DHCP snooping can process.
These DHCP packets are dropped to prevent a denial of service attack. [chars] is the warning.
Recommended Action No action is required.
Error Message DHCP_SNOOPING-4-STANDBY_AGENT_OPERATION_FAILED: DHCP snooping binding
transfer failed on the Standby Supervisor. [chars].
Explanation The DHCP snooping binding transfer process failed on a sta ndby supervisor engine.
[chars] is the standby supervisor engine.
Recommended Action No action is required.
Error Message DHCP_SNOOPING-5-DHCP_SNOOPING_UNTRUSTED_PORT: DHCP_SNOOPING drop
message on untrusted port, message type: [chars], MAC sa: [enet]
Explanation An untrusted port dropped a DHCP message. A host might be acting as a DHCP server.
[chars] is the message type (DHCPOFFER, DHCPACK, DHCPNAK, or DHCPLEASEQUERY),
and [enet] is the MAC address of the sending host.
Recommended Action No action is required.
Error Message DHCP_SNOOPING-6-AGENT_OPERATION_SUCCEEDED: DHCP snooping database
[chars] succeeded.
Explanation The DHCP binding transfer process succeeded. [chars] is the DCHP snooping database.
Recommended Action No action is required.
Error Message DHCP_SNOOPING-6-BINDING_COLLISION: Binding collision. [dec] bindings
ignored.
Explanation The specified number of bindings were ignored when the switch read the database file.
The bindings from the database file have MAC address and VLAN information that a configured
DHCP snooping binding already uses.
Recommended Action No action is required.