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unknown protocol drops on CISCO C9300-48T switch

aprasad11
Level 1
Level 1

Hi All,

 

Need you help. I am getting "unknown protocol drops" error in my CISCO C9300-48T switch and i think this is causing some application issues.

 

Below is version and not sure if this is some sort of software bug.

 

BOOTLDR: System Bootstrap, Version 16.8.1r [FC4], RELEASE SOFTWARE (P)

 

HKSW000#show inter te 1/1/1
TenGigabitEthernet1/1/1 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet, address is acf5.e6d5.2635 (bia acf5.e6d5.2635)
Description: dT: URCS - 10.170.124.10
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 10Gb/s, link type is auto, media type is SFP-10GBase-SR
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 32481000 bits/sec, 4951 packets/sec
5 minute output rate 55326000 bits/sec, 6761 packets/sec
7717719035 packets input, 6347542007358 bytes, 0 no buffer
Received 249027 broadcasts (245968 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 245968 multicast, 0 pause input
0 input packets with dribble condition detected
9993870483 packets output, 9455920391816 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
122382 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

3 Replies 3

Leo Laohoo
Hall of Fame
Hall of Fame
Unknown protocol drop = DTP
Can be ignored.

Hello,

I had disabled DTP cdp and vtp still drop shows

Unknown protocol drops are not bad.
If you really want it to remain "0" then disable Trunk.
Review Cisco Networking for a $25 gift card