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serge123
Beginner

input error but no crc

Hi,

Can someone explain what could be causing these input errors

WS-C4503 to CBS3020

Cable did test good and re punch connection today

thanks,

GigabitEthernet2/3 is up, line protocol is up (connected)

Hardware is Gigabit Ethernet Port, address is 001e.7ad7.81d2 (bia 001e.7ad7.81d2)

Description: To Blade CBS3020

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

     reliability 255/255, txload 4/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX

input flow-control is off, output flow-control is off

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:36, output never, output hang never

Last clearing of "show interface" counters 06:13:43

Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

30 second input rate 1098000 bits/sec, 726 packets/sec

30 second output rate 18697000 bits/sec, 1595 packets/sec

     23467079 packets input, 29007154284 bytes, 0 no buffer

     Received 5263 broadcasts (5223 multicasts)

     0 runts, 0 giants, 0 throttles

     18282 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 input packets with dribble condition detected

   20366435 packets output, 14639132975 bytes, 0 underruns

     0 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 out

I just found my input errors are cause by Rx-No-Pkt-Buff. I will move the port to a different group and see if this resolved the issue

4 REPLIES 4
Reza Sharifi
Hall of Fame Expert

Hi,

Can you hardcode the interface to Gig with full duplex on both sides of the connection?

Then clear counters and test again.

HTH

Reza Sharifi wrote:

Hi,

Can you hardcode the interface to Gig with full duplex on both sides of the connection?

Then clear counters and test again.

HTH

That does not help for lack of buffer errors, as the OP stated.

xiaozhenzhao
Beginner

Hi,

can you show the output by the command「show int g2/3 count err」

Sent from Cisco Technical Support iPhone App

serge123
Beginner

For thos interested

I was able to match the input errors with Rx-No-Pkt-Buff with the show interface gig 2/3 and the sh int gig 2/3 counters detail. This is when I found out the module was oversubscribe 8:1

Table 5-7 Oversubscribed Port Groupings for Module WS-X4424-GB-RJ45

1, 2, 3, 4

5, 6, 7, 8

9, 10, 11, 12

13, 14, 15, 16

17, 18, 19, 20

21, 22, 23, 24


Can someone explain how to calculate 2:1 ratio actullay it is for this module

WS-X4648-RJ45V+E

Thanks

Serge