Dhcp_Snooping-5 - Cisco Catalyst 4500 Series System Message Manual

Chapter 2 Messages and Recovery Procedures

DHCP_SNOOPING-5

Error Message DHCP_SNOOPING-6-AGENT_OPERATION_SUCCEEDED: DHCP snooping database
[char] succeeded.
Error Message DHCP_SNOOPING-5-DHCP_SNOOPING_FAKE_INTERFACE: [char] drop message
with mismatched source interface the binding is not updated message type: [char]
MAC sa: [mac-addr]
Error Message DHCP_SNOOPING-5-DHCP_SNOOPING_MATCH_MAC_FAIL: [char] drop message
because the chaddr doesn't match source mac message type: [char] chaddr:
[mac-addr] MAC sa: [mac-addr]
Error Message DHCP_SNOOPING-5-DHCP_SNOOPING_NONZERO_GIADDR: [char] drop message
with non-zero giaddr or option82 value on untrusted port message type: [char] MAC
sa: [mac-addr]
OL-13091-01
"No failure recorded."
The switch will continue to function if no action is taken, but the redundancy
Recommended Action
features will be compromised until both active and standby supervisor engines have working flash
memory available. Replace or insert flash memory into the supervisor engine that lacks it if needed.
Explanation DHCP snooping has successfully read from or written to the database.
This is an informational message only. No action is required.
Recommended Action
The DHCP snooping feature has detected a host trying to carry out a denial of service
Explanation
attack on another host in the network. The packet will be dropped.
This is an informational message only. No action is required.
Recommended Action
The DHCP snooping feature attempted MAC address validation and the check failed.
Explanation
There may be a malicious host trying to carry out a denial of service attack on the DHCP server. The
packet will be dropped.
This is an informational message only. No action is required.
Recommended Action
The DHCP snooping feature discovered a DHCP packet with option values not allowed
Explanation
on the untrusted port, indicating some host may be trying to act as a DHCP relay or server. The
packet will be dropped.
This is an informational message only. No action is required.
Recommended Action
Catalyst 4500 Series Switch Cisco IOS System Message Guide
DHCP SNOOPING Messages
2-21