Sh int output

Ibrahim Jamil · ‎02-19-2011

Hi Folks

Pls See the below output,how to troubleshoot what is going on there,in order to catch why this drops

GigabitEthernet1/1 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0065.a88b.448f
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 1000Mb/s
input flow-control is off, output flow-control is off
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:55, output hang never
Last clearing of "show interface" counters 1y12w
Input queue: 0/2000/23/0 (size/max/drops/flushes); Total output drops: 30
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 11000 bits/sec, 5 packets/sec
5 minute output rate 513000 bits/sec, 82 packets/sec
     3340179492 packets input, 1118995307814 bytes, 0 no buffer
     Received 132532351 broadcasts, 0 runts, 0 giants, 0 throttles
     23 input errors, 15 CRC, 15 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
    6401145698 packets output, 8036777723276 bytes, 0 underruns
     30 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped ou

abhischa · ‎02-19-2011

Hi,

I see a counter value of 15 for CRC errros. Is this counter increasing? If yes, we need to check at L1 - the physical connections. Swap the cable with another one or swap SFP's if any are present.

CRC increments point to a physical layer issue and will lead to drops.

Cheers,

Abhishek.

Pls rate helpful posts.

Ibrahim Jamil · ‎02-19-2011

Thanks

what about the Below:strange Brodcast

Received 132532351 broadcasts, 0 runts, 0 giants, 0 throttles,

How to verify and Troubleshoot