From: Charles Henson (chenson@gmail.com)
Date: Fri Oct 31 2008 - 14:20:17 ARST
OK,
I try to dig thru CCO (like wandering thru an endless forest sometimes)
and google questions before putting them on this thread but this question is
either too simple or just not clear. In troubleshooting an interface
recently that went into err-disable state, I was asked what "last input
never" meant and I honestly wasn't sure. I don't believe based on the other
interfaces that it's related to the issue but it's just something I've
overlooked over the years. Can anyone provide guidance on what "input" is
actually being referenced? Is it referencing the ARPs? No, I don't think
it's associated with the problem but I'm providing the full info anyway. Any
help would be appreciated. Thanks.
---------------------------------------------------
SWITCH#sh int status
Port Name Status Vlan Duplex Speed Type
Fa0/2 Server : SERVER err-disabled 1 full 100
10/100BaseTX
SWITCH# sh log
*CLOCK UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2,
changed state to down
*CLOCK UTC: %LINK-3-UPDOWN: Interface FastEthernet0/2, changed state to down
SWITCH#sh int fa0/2
FastEthernet0/2 is down, line protocol is down (err-disabled)
Hardware is Fast Ethernet, address is 0012.7ffc.b802 (bia 0012.7ffc.b802)
Description: Server : SERVER (Unix)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
*Last input never*, output 16:24:49, 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 0 bits/sec, 0 packets/sec
16439805 packets input, 1445291025 bytes, 0 no buffer
Received 2651 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 18 multicast, 0 pause input
0 input packets with dribble condition detected
101873765 packets output, 731143039 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
After a SHUT/NO SHUT:
Fa0/2 Server : SERVER connected 1 full 100
10/100BaseTX
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