Hi, all,
Our office is now established with new devices Cat2960 & Cat3560, but
I found the state changed frequently, as the following :
Jun 5 09:33:43: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to down
Jun 5 09:33:45: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to up
Jun 5 11:56:30: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to down
Jun 5 11:57:01: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to up
Jun 5 12:43:26: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to down
Jun 5 12:43:44: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to up
..Jun 5 13:25:51: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to down
..Jun 5 13:26:15: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to up
Jun 5 14:23:05: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to down
Jun 5 14:23:09: %LINK-3-UPDOWN: Interface GigabitEthernet0/21,
changed state to up
gd-hko-sw2960-2# sh int gi0/21
GigabitEthernet0/21 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 001f.2732.f395 (bia 001f.
2732.f395)
MTU 1500 bytes, BW 1000000 Kbit, 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, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:01, 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 0 bits/sec, 0 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
1549674 packets input, 389814712 bytes, 0 no buffer
Received 20830 broadcasts (4040 multicasts)
0 runts, 0 giants, 0 throttles
1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 4040 multicast, 0 pause input
0 input packets with dribble condition detected
19451473 packets output, 2816921787 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
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
gd-hko-sw2960-2#
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