Troubleshooting guide

10-3
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 10 Troubleshooting Ethernet, ATM Uplink, and POS Uplink Interfaces
Troubleshooting General Ethernet Interface Problems
MSC# Rej. Cells Inv. Cells Mem. Buffs Rx Cells Tx Cells Rx HEC Tx PErr
----- ----------- ------------ ----------- ----------- ---------- ---------- ----------
MSC 0: 2189 6 14177 0 0 0 0
MSC 1: 0 36 2070 0 0 0 0
MSC 2: 0 0 0 0 0 0 0
MSC 3: 0 0 0 0 0 0 0
MSC 4: 0 0 0 0 0 0 0
MSC 5: 0 0 0 0 0 0 0
MSC 6: 0 6 1351 0 0 0 0
MSC 7: 0 10 1280 0 0 0 0
Switch Fabric Statistics
Rejected Cells: 2189
Invalid Cells: 58
Memory Buffers: 18878
Rx Cells: 0
Tx Cells: 0
RHEC: 0
TPE: 0
<Information deleted>
Look at the values in the Rejected Cells and Invalid Cells fields. Note that the Rejected Cells and Invalid
Cells field counters are increasing. This means there might be a problem in the switch fabric.
Step 3 Verify that no ports are involved by issuing the show epc queuing and show epc status commands.
Switch# show epc queuing
INT X-INT VCI QCNT VCI QCNT
Switch# show epc status
Status of GigabitEthernet0/0/0: OK
Status of GigabitEthernet0/0/1: OK
Status of GigabitEthernet1/0/0: OK
Status of GigabitEthernet1/0/1: OK
Status of GigabitEthernet2/0/0: OK
Status of GigabitEthernet2/0/1: OK
Status of GigabitEthernet3/0/0: OK
Status of GigabitEthernet3/0/1: OK
Status of GigabitEthernet9/0/0: OK
Status of GigabitEthernet9/0/1: OK
Status of GigabitEthernet10/0/0: OK
Status of GigabitEthernet10/0/1: OK
Status of GigabitEthernet11/0/0: OK
Status of GigabitEthernet11/0/1: OK
Status of GigabitEthernet12/0/0: OK
Status of GigabitEthernet12/0/1: OK
If the queues are empty and all of the ports show OK status, then the problem is not the ports, it is the
switch processor.
You can resolve this problem by upgrading your system software image to release Cisco IOS Release
version 12.0(4a)WX5(11) or later, by replacing the switch processors, or by doing both.