Cisco Catalyst 3750-X Message Manual page 37

Chapter 2 Message and Recovery Procedures
Error Message DHCP_SNOOPING-4-DHCP_SNOOPING_PVLAN_WARNING: DHCP Snooping
configuration may not take effect on secondary vlan [dec]. [chars]
Explanation
primary VLAN automatically propagates to all the secondary VLANs. [dec] is the VLAN ID of the
secondary VLAN, and [chars] is the warning.
Recommended Action
Error Message DHCP_SNOOPING-4-IP_SOURCE_BINDING_NON_EXISTING_VLAN_WARNING: IP
source binding is configured on non existing vlan [dec].
Explanation
is the VLAN.
Recommended Action
Error Message DHCP_SNOOPING-4-IP_SOURCE_BINDING_PVLAN_WARNING: IP source filter may
not take effect on secondary vlan [dec] where IP source binding is configured.
[chars].
Explanation
automatically propagates to all secondary VLANs. [dec] is the secondary VLAN, and [chars] is the
warning.
Recommended Action
Error Message DHCP_SNOOPING-4-NTP_NOT_RUNNING: NTP is not running; reloaded binding
lease expiration times are incorrect.
Explanation
Time Protocol (NTP) is not running, the calculated lease duration for the bindings is incorrect.
Recommended Action
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
These DHCP packets are dropped to prevent a denial of service attack. [chars] is the warning.
Recommended Action
OL-9772-05
If the private VLAN feature is configured, the DHCP snooping configuration on the
No action is required.
An IP source binding was configured on a VLAN that has not been configured yet. [dec]
No action is required.
If private VLANs are configured, the IP-source-guard filter on the primary VLAN
No action is required.
If the DHCP snooping database agent loads the DHCP snooping bindings and Network
Configure NTP on the switch to provide an accurate time and date for the
The CPU is receiving DHCP at a higher rate than the DHCP snooping can process.
No action is required.
Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switch System Message Guide
DHCP_SNOOPING Messages
2-19