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Input Errors (Show Interfaces) on Cisco Router

Hamidsattarrana
Level 1
Level 1

Hi!

I am getting errors on LAN & WAN interfaces. What can be the reason?

WAN Interface Show Interfaces Output: Also 2 Sub-Interfaces are configured on Gig 0/0 (NAT Outside Interface)

 

Core-Router#show int gig 0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is BCM1125 Internal MAC, address is 68bd.abbd.d720 (bia 68bd.abbd.d720)
Description: WAN
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, media type is RJ45
output flow-control is XON, input flow-control is XON
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 7w0d
Input queue: 0/75/8/14951 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2079000 bits/sec, 326 packets/sec
5 minute output rate 798000 bits/sec, 256 packets/sec
476894658 packets input, 2224149772 bytes, 1161 no buffer
Received 9134960 broadcasts, 0 runts, 0 giants, 54 throttles
7473 input errors, 0 CRC, 0 frame, 7473 overrun, 0 ignored
0 watchdog, 12136746 multicast, 0 pause input
0 input packets with dribble condition detected
2850543739 packets output, 2611710532 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
143621 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

 

 

LAN Interface: 2-Sub-Interfaces are configured on LAN Segment:

Core-Router#show int gig 0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is BCM1125 Internal MAC, address is 68bd.abbd.d721 (bia 68bd.abbd.d721)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, media type is RJ45
output flow-control is XON, input flow-control is XON
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 7w0d
Input queue: 0/75/1173/1874 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Class-based queueing
Output queue: 0/1000/0 (size/max total/drops)
5 minute input rate 746000 bits/sec, 249 packets/sec
5 minute output rate 1856000 bits/sec, 308 packets/sec
2912456875 packets input, 861332191 bytes, 885 no buffer
Received 31655591 broadcasts, 0 runts, 0 giants, 42 throttles
2349 input errors, 0 CRC, 0 frame, 2349 overrun, 0 ignored
0 watchdog, 35341194 multicast, 0 pause input
0 input packets with dribble condition detected
467413018 packets output, 735028861 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
151524 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

 

 

 

1 Accepted Solution

Accepted Solutions

marce1000
Hall of Fame
Hall of Fame

 

 - Check the resolving-answer from this thread :

          https://community.cisco.com/t5/small-business-routers/interface-input-errors/td-p/2964643

 M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

View solution in original post

2 Replies 2

marce1000
Hall of Fame
Hall of Fame

 

 - Check the resolving-answer from this thread :

          https://community.cisco.com/t5/small-business-routers/interface-input-errors/td-p/2964643

 M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Hello,

 

--> 143621 unknown protocol drops

 

Try and turn off CDP (no cdp run), unknown protocol drops can be anything including CDP.