Troubleshooting Tables - Cisco Catalyst 2975 Software Configuration Manual

Chapter 38 Troubleshooting
Table 38-3
Column
Values
Masks
Fixups
Retries
Failures
For more information about the show platform tcam errors privileged EXEC command, see the
command reference for this release.

Troubleshooting Tables

These tables are a condensed version of troubleshooting documents on Cisco.com.
•
•
•
Troubleshooting CPU Utilization
This section lists some possible symptoms that could be caused by the CPU being too busy and shows
how to verify a CPU utilization problem.
that you can identify. It gives possible causes and corrective action with links to the
High CPU Utilization
Possible Symptoms of High CPU Utilization
Note that excessive CPU utilization might result in these symptoms, but the symptoms could also result
from other causes.
•
•
•
•
•
•
Layer 3 switches:
•
•
•
OL-19720-02
Details of Checked TCAM Portions
Description
The number of invalid values found in the TCAM tables.
The number of invalid masks found in the TCAM tables.
The number of initial attempts to fix the invalid values or masks.
The number of attempts to fix the invalid values or masks.
The number of failed attempts to fix the invalid values or masks.
"Troubleshooting CPU Utilization" section on page 38-25
"Troubleshooting Power over Ethernet (PoE)" section on page 38-27
"Troubleshooting Stackwise" section on page 38-30
document on Cisco.com.
Spanning tree topology changes
EtherChannel links brought down due to loss of communication
Failure to respond to management requests (ICMP ping, SNMP timeouts, slow Telnet or SSH
sessions)
UDLD flapping
IP SLAs failures because of SLAs responses beyond an acceptable threshold
DHCP or IEEE 802.1x failures if the switch does not forward or respond to requests
Dropped packets or increased latency for packets routed in software
BGP or OSPF routing topology changes
HSRP flapping
Table 38-4 lists the primary types of CPU utilization problems
Catalyst 2975 Switch Software Configuration Guide
Troubleshooting Tables
Troubleshooting
38-25