Cisco Catalyst 4500 Series Message Guide

2-19
Catalyst 4500 Series Switch Cisco IOS System Message Guide Release 12.2(31)SGA
OL-11541-01
Chapter 2 Messages and Recovery Procedures
DHCP_SNOOPING Messages
“No failure recorded.”
Recommended Action The switch will continue to function if no action is taken, but the redundancy
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.
DHCP_SNOOPING-5
Error Message DHCP_SNOOPING-6-AGENT_OPERATION_SUCCEEDED: DHCP snooping database
[char] succeeded.
Explanation
DHCP snooping has successfully read from or written to the database.
Recommended Action This is an informational message only. No action is required.
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]
Explanation
The DHCP snooping feature has detected a host trying to carry out a denial of service
attack on another host in the network. The packet will be dropped.
Recommended Action This is an informational message only. No action is required.
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]
Explanation
The DHCP snooping feature attempted MAC address validation and the check failed.
There may be a malicious host trying to carry out a denial of service attack on the DHCP server. The
packet will be dropped.
Recommended Action This is an informational message only. No action is required.
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]
Explanation
The DHCP snooping feature discovered a DHCP packet with option values not allowed
on the untrusted port, indicating some host may be trying to act as a DHCP relay or server. The
packet will be dropped.
Recommended Action This is an informational message only. No action is required.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E