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Cisco ME 3400E, ME 3400, and ME 2400 Ethernet Access Switch System Message Guide
OL-9641-04
Chapter 2 Messages and Recovery Procedures
DHCP_SNOOPING Messages
Error Message
DHCP_SNOOPING-4-DHCP_SNOOPING_PVLAN_WARNING: DHCP Snooping
configuration may not take effect on secondary vlan [dec]. [chars]
Explanation
This message means that if private VLANs are configured, the DHCP Snooping
configuration on the primary VLAN automatically propagates to all the secondary VLANs. [dec] is
the VLAN IDs of the secondary VLANs, and [chars] is the warning.
Recommended Action
No action is required.
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].
Note
This message applies only to the Cisco ME 3400E and ME 3400 switches.
Explanation
This message means that if private VLANs are configured, the IP-source-guard filter on
the primary VLAN automatically propagates to all secondary VLANs. [dec] is the secondary
VLAN, and [chars] is the warning.
Recommended Action
No action is required.
Error Message
DHCP_SNOOPING-4-IP_SOURCE_BINDING_NON_EXISTING_VLAN_WARNING: IP
source binding is configured on non existing vlan [dec].
Note
This message applies only to the Cisco ME 3400E and ME 3400 switches.
Explanation
The message means that an IP source binding was configured on a VLAN that has not
been configured yet. [dec] is the VLAN.
Recommended Action
No action is required.
Error Message
DHCP_SNOOPING-4-NTP_NOT_RUNNING: NTP is not running; reloaded binding
lease expiration times are incorrect.
Explanation
This message means that if the DHCP snooping database agent loads the DHCP
snooping 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.