cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2038
Views
0
Helpful
6
Replies

interface0/1/1 flapping /Significant interface CRC /input errors

AHMADJ
Level 1
Level 1

TenGigabitEthernet0/1/1 (21.1%)

 

248046 input errors, 208123 CRC, 0 frame, 0 overrun, 0 ignored
 

interface TenGigabitEthernet0/1/1
description +++ Connected to AM-CORE-B Te1/9 +++
ip flow monitor BRANCH_TUNNELS_MONITOR input
ip flow monitor BRANCH_TUNNELS_MONITOR output
ip address 10.231.24.58 255.255.255.252
no ip redirects
no ip unreachables
no ip proxy-arp
ip ospf message-digest-key 1 md5 <removed>
ip ospf network point-to-point
ip ospf cost 11
load-interval 30
service-policy input AV-SCCM-SERVER-LIMIT-POLICY
service-policy output CENFS-BR-OUT-LIMIT-POLICY
6 Replies 6

Seb Rupik
VIP Alumni
VIP Alumni

HI there,

CRC errors are most likely caused by Layer1 issues (although can be Layer2 also). Swap the fibre cable reset the interface counters and check back after a short period of time.

 

cheers,

Seb.

Hi

I already swaaped the fiber and changed the cable and sfp

Thanks
Ahmad jabali

What does the configuration and interface stats look like for AM-CORE-B Te1/9  ?

Hello,

 

what device is connected on the other side ? Are the crc/input errors showing on the interface on the other side of the link as well ?

 

interface Ethernet1/9                                                                              

  description +++ Connected to AM-MPLS-HUB-01 (ETC) Te0/1/1 +++                                   

  no cdp enable                                                                                   

  flowcontrol receive on                                                                           

  flowcontrol send on                                                                             

  beacon                                                                                          

  ip flow monitor Netflow-Monitor-1 input sampler NF-Sampler-1                                    

  ip flow monitor Netflow-Monitor-1 output sampler NF-Sampler-1                                   

  no ip redirects                                                                                 

  ip address X.X.24.57/30                                                                      

  ip ospf authentication message-digest                                                            

  ip ospf message-digest-key 1 md5 3 843ec881d2fe32374934a55d307c6bbf                             

  ip ospf cost 11                                                                                 

  ip ospf network point-to-point                                                                  

  ip router ospf 1 area 0.0.0.0                                                                   

  no shutdown   

-------------------------------------------------------------

Ethernet1/9 is down (linkFlapErrDisabled, port: error)                                             

admin state is up, Dedicated Interface                                                             

  Hardware: 10000 Ethernet, address: e8ed.f338.0446 (bia e8ed.f33b.2938)                           

  Description: +++ Connected to AM-MPLS-HUB-01 (ETC) Te0/1/1 +++                                   

  Internet Address is X.X.24.57/30                                                              

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec                                                    

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

  Encapsulation ARPA, medium is broadcast                                                          

  Port mode is routed                                                                              

  auto-duplex, 10 Gb/s, media type is 10G                                                          

  Beacon is turned on                                                                              

  Auto-Negotiation is turned off                                                                   

  Input flow-control is on, output flow-control is on                                              

  Auto-mdix is turned off                                                                          

  Rate mode is dedicated                                                                           

  Switchport monitor is off                                                                        

  EtherType is 0x8100                                                                              

  EEE (efficient-ethernet) : n/a                                                                   

  Last link flapped 6d10h                                                                          

  Last clearing of "show interface" counters 51w5d                                                 

  5029 interface resets                                                                            

  Load-Interval #1: 30 seconds                                                                     

    30 seconds input rate 0 bits/sec, 0 packets/sec                                                

    30 seconds output rate 0 bits/sec, 0 packets/sec                                               

    input rate 0 bps, 0 pps; output rate 0 bps, 0 pps                                              

  Load-Interval #2: 5 minute (300 seconds)                                                         

    300 seconds input rate 0 bits/sec, 0 packets/sec                                               

    300 seconds output rate 0 bits/sec, 0 packets/sec                                              

    input rate 0 bps, 0 pps; output rate 0 bps, 0 pps                                              

  L3 in Switched:                                                                                  

    ucast: 2091981 pkts, 1383977706 bytes - mcast: 16498193 pkts, 4312241758 bytes                 

  L3 out Switched:                                                                                 

    ucast: 37248396 pkts, 9009221435 bytes - mcast: 0 pkts, 0 bytes                                

  RX                                                                                               

    2160817 unicast packets  18044266 multicast packets  839 broadcast packets                    

    20199042 input packets  5954344912 bytes                                                      

    0 jumbo packets  0 storm suppression packets                                                  

    0 runts  0 giants  0 CRC/FCS  0 no buffer                                                      

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored                               

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop                                

    0 input with dribble  0 input discard                                                         

    0 Rx pause                                                                                    

  TX                                                                                               

    48630582 unicast packets  3933970 multicast packets  14948 broadcast packets                  

    52569883 output packets  13724840322 bytes                                                    

    0 jumbo packets                                                                                

    0 output error  0 collision  0 deferred  0 late collision                                     

    0 lost carrier  0 no carrier  0 babble  0 output discard                                       

    0 Tx pause                                                                                    

 

 

Hello Ahmad,

the other device is likely a Nexus platform from interface naming.

 

>> Ethernet1/9 is down (linkFlapErrDisabled, port: error)

 

>> Last link flapped 6d10h

 

On the Nexus side there are no input errors at all but in the past the port has flapped and you have disabled protection from flapping.

>>

0 runts 0 giants 0 CRC/FCS 0 no buffer

0 input error 0 short frame 0 overrun 0 underrun 0 ignored

0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop

0 input with dribble 0 input discard

0 Rx pause

 

Have you tried to change the SFP optics also on the Nexus side?

 

Hope to help

Giuseppe