Cisco WS-C4507R Troubleshooting Manual page 26

RST-3508
9805_05_2004_c2
RST-3508
9805_05_2004_c2
© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
Useful Port Troubleshooting Commands
for Performance and Connectivity
cat4003> (enable) sh mac 2/1
Port Rcv-Unicast
-------- -------------------- -------------------- --------------------
2/1 100999222
Port Xmit-Unicast
-------- -------------------- -------------------- --------------------
2/1 51713414
Port Rcv-Octet
-------- -------------------- --------------------
2/1 132521131606
MAC Dely-Exced MTU-Exced
-------- ---------- ---------- ---------- ---------- ---------- ----------
2/1 0
Last-Time-Cleared
--------------------------
Thu Mar 20 2003, 12:09:25
Useful to Verify Traffic Flow Through an Interface
In-discards: Traffic on a trunk VLAN but no switchports in the VLAN or if trunk is blocking
•
In-lost: Packets dropped in the Receive Path; Rx-No-Packet Buffer Avail, Rx Crc Error, Rx Fragments, etc
•
Out-lost: Output buffer is full...oversubscription of the output port
•
Lrn-discard: Not able to learn a MAC address due to CAM table full or hash index collision
•
© 2004 Cisco Systems, Inc. All rights reserved.
Useful Port Troubleshooting Commands
for Performance
cat4003> (enable) show port counters 2/1
Port Align-Err FCS-Err
----- ---------- ---------- ---------- ---------- ---------
2/1 -
Port Single-Col Multi-Coll Late-Coll
----- ---------- ---------- ---------- ---------- --------- --------- ---------
2/1 0
Last-Time-Cleared
--------------------------
Thu Mar 20 2003, 12:09:25
Error Rate Should Be Less Than 3% of Traffic
FCS_err: Due to bad CRC...faulty NIC or cable
•
Xmit-err: Internal transmit buffer is full; oversubscription
•
Rcv-err: Rx buffer is full
•
Late collisions: Duplex mismatch
•
© 2004 Cisco Systems, Inc. All rights reserved.
( CAT OS)
Rcv-Multicast Rcv-Broadcast
91857174
Xmit-Multicast Xmit-Broadcast
26520362
Xmit-Octet
96814952585
In-Discard Lrn-Discrd In-Lost
0 0 0 87
(CAT OS)
Xmit-Err Rcv-Err UnderSize
2 419824 2
Excess-Col Carri-Sen Runts
0 20215 0
460433
32
Out-Lost
419821
51 51 51
0
Giants
1 0 0
52 52 52