Cisco WS-C4507R User Manual

© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
515151
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Useful Port Troubleshooting Commands
for Performance and Connectivity
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
cat4003> (enable) sh mac 2/1 ( CAT OS)
Port Rcv-Unicast Rcv-Multicast Rcv-Broadcast
-------- -------------------- -------------------- --------------------
2/1 100999222 91857174 460433
Port Xmit-Unicast Xmit-Multicast Xmit-Broadcast
-------- -------------------- -------------------- --------------------
2/1 51713414 26520362 32
Port Rcv-Octet Xmit-Octet
-------- -------------------- --------------------
2/1 132521131606 96814952585
MAC Dely-Exced MTU-Exced In-Discard Lrn-Discrd In-Lost Out-Lost
-------- ---------- ---------- ---------- ---------- ---------- ----------
2/1 0 0 0 0 87 419821
Last-Time-Cleared
--------------------------
Thu Mar 20 2003, 12:09:25
525252
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Useful Port Troubleshooting Commands
for Performance
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
cat4003> (enable) show port counters 2/1 (CAT OS)
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/1 - 2 419824 2 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts Giants
----- ---------- ---------- ---------- ---------- --------- --------- ---------
2/1 0 0 20215 0 1 0 0
Last-Time-Cleared
--------------------------
Thu Mar 20 2003, 12:09:25

Cisco WS-C4507R Specifications

General

Brand	Cisco
Model	WS-C4507R
Category	Network Router
Language	English