Troubleshooting guide

10-5
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
Step 2 Enter the show switch fabric command again.
Switch# show switch fabric
<Information deleted>
MMC Switch Fabric (idb=0x60CF1788)
Key: Rej. Cells - # cells rejected due to lack of resources
or policing (16-bit)
Inv. Cells - # good cells that came in on a non-existent conn.
Mem Buffs - # cell buffers currently in use
RX Cells - # rx cells (16-bit)
TX Cells - # tx cells (16-bit)
Rx HEC - # cells Received with HEC errors
Tx PERR - # cells with memory parity errors
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
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.