Hello everyone
I have a Cisco router C1700 and it is presenting unknow errors on Serial 0/0 and fa0/0 interfaces.
Does anybody have an idea why this counter is increasing?? Im not very sure if is by CDP neighbors or Vlans that are not configured on a switch attached.
I undertand that the unknown protocol drops field displayed in the above example refers to the total number of packets dropped due to unknown or unsupported types of protocol.
But anyone have any other suggestion in oder to solve this unknow DROPS?
Thanks in addition
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES NVRAM up up
FastEthernet0/0.1 129.109.1.254 YES NVRAM up up
FastEthernet0/0.2 172.24.0.230 YES NVRAM up up
FastEthernet0/0.5 172.16.147.142 YES NVRAM up up
FastEthernet0/0.7 172.16.147.150 YES NVRAM up up
Serial0/0 201.129.39.202 YES NVRAM up up
Serial0/0 is up, line protocol is up
Hardware is PowerQUICC Serial
Description: ENLACE A UNINET_RPV FOLIO A32-0812-0111
Internet address is 201.129.39.202/30
Backup interface Dialer10, failure delay 20 sec, secondary disable delay 60 sec,
kickin load not set, kickout load not set
MTU 1500 bytes, BW 1948 Kbit, DLY 20000 usec,
reliability 255/255, txload 2/255, rxload 6/255
Encapsulation PPP, LCP Open
Open: IPCP, CDPCP, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d01h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 3
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/14/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1461 kilobits/sec
5 minute input rate 46000 bits/sec, 6 packets/sec
5 minute output rate 21000 bits/sec, 7 packets/sec
855889 packets input, 348526935 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
184 input errors, 145 CRC, 7 frame, 0 overrun, 0 ignored, 32 abort
855320 packets output, 188034850 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
1646 unknown protocol drops------------------------------------------------------------------------>>>>> WHY???
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
