I have a router thats one interface (GigabitEthernet0/3/0) flaps a lot. A The model of router is Cisco 2811 (revision 53.51). When I do the sh int command the output looks fine.
#sh int GigabitEthernet0/2/0
GigabitEthernet0/2/0 is up, line protocol is up
Hardware is PM-3387, address is 001b.d31b.6eb1 (bia 001b.d31b.6eb1)
Description: Link to Group Router
Internet address is 130.22.203.146/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is autonegotiation, media type is SX
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 never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 64000 bits/sec, 36 packets/sec
5 minute output rate 82000 bits/sec, 39 packets/sec
18421 packets input, 3800884 bytes, 0 no buffer
Received 15 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
19954 packets output, 4469301 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 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
