Troubleshooting guide

11-29
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 11 Troubleshooting Layer 3 Network Connections
Troubleshooting IP Layer 3 Connections
Status of FastEthernet1/0/12: OK
Status of FastEthernet1/0/13: OK
Status of FastEthernet1/0/14: OK
Status of FastEthernet1/0/15: OK
C8540CSR-1#
The OK in the show controllers c8500 status command display indicates the microcode was
successfully downloaded to the Fast Ethernet processor interface and Gigabit processor interface.
Step 3 From the Catalyst 8540-1, use the show controllers c8500 counters command to display the status of
the interfaces and the Input and Output Packet numbers.
C8540CSR-1# show controllers c8500 counters
Interface Input Runts Giants Input CRC Frame Output Output
State Packets Errors Packets Errors
-----------------------------------------------------------------------------
G0/1/0 U 127286 0 0 0 0 0 137296 0
G0/1/1 U 0 0 0 0 0 0 20 0
F1/0/0 U 31849 0 0 0 0 0 31855 0
F1/0/1 AD 1 0 0 0 0 0 1 0
F1/0/2 AD 1 0 0 0 0 0 1 0
F1/0/3 AD 1 0 0 0 0 0 1 0
F1/0/4 AD 1 0 0 0 0 0 1 0
F1/0/5 AD 1 0 0 0 0 0 1 0
F1/0/6 AD 1 0 0 0 0 0 1 0
F1/0/7 AD 1 0 0 0 0 0 1 0
F1/0/8 AD 1 0 0 0 0 0 1 0
F1/0/9 AD 1 0 0 0 0 0 1 0
F1/0/10 AD 1 0 0 0 0 0 1 0
F1/0/11 AD 1 0 0 0 0 0 1 0
F1/0/12 AD 1 0 0 0 0 0 1 0
F1/0/13 AD 1 0 0 0 0 0 1 0
F1/0/14 AD 1 0 0 0 0 0 1 0
F1/0/15 U 31968 0 0 0 0 0 54732 0
--More--
-----------------------------------------------------------------------------
AD - Admin Down, D - Down, F - Fail, U - Up
C8540CSR-1#
Step 4 Check the Interface State field. It should indicate the interfaces are up.
Step 5 Check the Input Packets and Output Packets fields. The show controllers c8500 counters command
should be entered at least twice. The counters in the Input Packets and Output Packets fields should be
incrementing. This information can also be displayed using the show interfaces command.
Note The clear counters command does not clear the show controllers c8500 counters command display.
If you determine that the interface is configured incorrectly, refer to the “Configuring Interfaces” chapter
in the Layer 3 Switching Software Feature and Configuration Guide.