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Very high CRC errors observed between Catalasy 6513 and Nexus 5010.

Hi experts,

  I found our link between Catalyst 6513 and Nexus 5010(Ethernet1/18) have very high CRC errors. Is it a cable issue? Our tech support said it is because the "protocol or fromat" between 6513 and 5010 is not match, does it make sense?

  Also, the port trunking between Nexus 5010-1 and Nexus 5010-2(Ethernet 1/19, 1/20) are very high, too. Our tech support said it is because it spreads from 6513, does it make sense?

  We observed intermittent packet loss in this broadcast domain and I suspect maybe something wrong in these links. I would like to replace these links. Any thoughts?

http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1904.html

Media Problem

Suggested Actions

Excessive noise

1. Use   the show interfaces ethernet exec command to determine the   status of the router's Ethernet interfaces. The presence of many CRC errors   but not many collisions is an indication of excessive noise.

2. Check   cables to determine whether any are damaged.

3. Look   for badly spaced taps causing reflections.

4. If   you are using 100BaseTX, make sure you are using Category 5 cabling and not   another type, such as Category 3.

Ethernet1/18 is up

  Hardware: 10000 Ethernet, address: 000d.ecff.8319 (bia 000d.ecff.8319)

  Description: *** Uplink to Cisco Catalyst 6513 (QRDCS04SVR02.quanta.corp) ***

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,

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

Encapsulation ARPA

  Port mode is trunk

  full-duplex, 10 Gb/s, media type is 10g

  Beacon is turned off

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  Last link flapped 19week(s) 3day(s)

  Last clearing of "show interface" counters 9w0d

  1 minute input rate 5238656 bits/sec, 938 packets/sec

  1 minute output rate 5409872 bits/sec, 622 packets/sec

  Rx

    22592491241 input packets 22132920515 unicast packets 163222059 multicast packets

    169024399 broadcast packets 7080087538 jumbo packets 0 storm suppression packets

    17610171328017 bytes

  Tx

    9391526216 output packets 4698381 multicast packets

    4721087 broadcast packets 5996286879 jumbo packets

    10065311317781 bytes

    0 input error 0 short frame 0 watchdog

    0 no buffer 0 runt 127324239 CRC 0 ecc

    0 overrun  0 underrun 0 ignored 0 bad etype drop

    0 bad proto drop 0 if down drop 0 input with dribble

    0 input discard

    0 output error 0 collision 0 deferred

    0 late collision 0 lost carrier 0 no carrier

    0 babble

    0 Rx pause 0 Tx pause

  0 interface resets

Ethernet1/19 is up

  Hardware: 10000 Ethernet, address: 000d.ecff.94da (bia 000d.ecff.94da)

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 6/255

  Encapsulation ARPA

  Port mode is trunk

  full-duplex, 10 Gb/s, media type is 10g

  Beacon is turned off

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  Last link flapped 8week(s) 6day(s)

  Last clearing of "show interface" counters 9w0d

  1 minute input rate 263998208 bits/sec, 27660 packets/sec

  1 minute output rate 29319968 bits/sec, 16193 packets/sec

  Rx

    50433826199 input packets 50393186457 unicast packets 7105063 multicast packets

    29783294 broadcast packets 19874301248 jumbo packets 0 storm suppression packets

    42044738728764 bytes

  Tx

    40728666703 output packets 4321608 multicast packets

    1081789 broadcast packets 6594990230 jumbo packets

    18486497444454 bytes

    0 input error 0 short frame 0 watchdog

    0 no buffer 0 runt 3751385 CRC 0 ecc

    0 overrun  0 underrun 0 ignored 0 bad etype drop

    0 bad proto drop 0 if down drop 0 input with dribble

    0 input discard

    0 output error 0 collision 0 deferred

    0 late collision 0 lost carrier 0 no carrier

    0 babble

    0 Rx pause 0 Tx pause

  2 interface resets

Ethernet1/20 is up

  Hardware: 10000 Ethernet, address: 000d.ecff.94db (bia 000d.ecff.94db)

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,

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

  Encapsulation ARPA

  Port mode is trunk

  full-duplex, 10 Gb/s, media type is 10g

  Beacon is turned off

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  Last link flapped 8week(s) 6day(s)

  Last clearing of "show interface" counters 9w0d

  1 minute input rate 48087000 bits/sec, 7436 packets/sec

  1 minute output rate 37186824 bits/sec, 16415 packets/sec

  Rx

    43527323058 input packets 43512151198 unicast packets 3977816 multicast packets

    8369221 broadcast packets 17479050584 jumbo packets 0 storm suppression packets

    36716730049864 bytes

  Tx

    34942130111 output packets 1563815 multicast packets

    1680924 broadcast packets 4804882566 jumbo packets

    14242883579129 bytes

    0 input error 0 short frame 0 watchdog

    0 no buffer 0 runt 2824823 CRC 0 ecc

    0 overrun  0 underrun 0 ignored 0 bad etype drop

    0 bad proto drop 0 if down drop 0 input with dribble

    0 input discard

    0 output error 0 collision 0 deferred

    0 late collision 0 lost carrier 0 no carrier

    0 babble

    0 Rx pause 0 Tx pause

  2 interface resets

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