cisco 3850 amber led

[Manish Manwal]

in our 3850 core switch, one port has led amber. what is that mean.???

what is indication of amber light.

[Deepak Kumar]

Hi,

Amber: Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/hardware/installation/guide/b_c3850_hig/b_c3850_hig_chapter_01.html#reference_070B05A2A52447989FBF377342C3761C

Regards,

Deepak Kumar

[johnd2310]

Hi,

What is the output of the "show interface" command  on that interface?

Thanks

John

[Leo Laohoo]

Post the complete output to the command "sh interface <BLAH>" and "sh interface status err".

[Manish Manwal]

the output of sh int status and sh int err-.

[Leo Laohoo]

---

@Manish Manwal wrote:

47687661 input errors, 87811 CRC

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This is the reason why the LED is amber.  Post the complete output to the command "sh interface Ten 1/0/20 controll".   Since this is a fibre optic line, I suspect that there is a fibre optic fault. 

---

@Manish Manwal wrote:

Total output drops: 178713476

178713476 output errors

---

Notice that the Total Output Drops and the Output Errors are equal?  I believe this is a bug.

[Manish Manwal]

#sh int tenGigabitEthernet 1/0/20 con
CSW1.PLANT1#sh int tenGigabitEthernet 1/0/20 controller
TenGigabitEthernet1/0/20 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet, address is f8b7.e262.0114 (bia f8b7.e262.0114)
Description: link to DSW1.PLANT1.S.ROOMinterface TenGigabitEthernet1/0/20
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 7/255, rxload 17/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseSX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:20, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 178713476
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 69831000 bits/sec, 6714 packets/sec
5 minute output rate 28475000 bits/sec, 6495 packets/sec
131425775825 packets input, 194728546618823 bytes, 0 no buffer
Received 50789805 broadcasts (22523660 multicasts)
41 runts, 0 giants, 0 throttles
47690755 input errors, 87818 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 22523660 multicast, 0 pause input
0 input packets with dribble condition detected
53399407835 packets output, 24204381316968 bytes, 0 underruns
178713476 output errors, 0 collisions, 1 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
Transmit TenGigabitEthernet1/0/20 Receive
24204381316968 Total bytes 194728585228007 Total bytes
47827464453 Unicast frames 131375014763 Unicast frames
23717905075505 Unicast bytes 194724640895745 Unicast bytes
2559213894 Multicast frames 22523662 Multicast frames
238152775102 Multicast bytes 1803119950 Multicast bytes
3012729488 Broadcast frames 28266155 Broadcast frames
248323466361 Broadcast bytes 2141212312 Broadcast bytes
0 System FCS error frames 6885 IpgViolation frames
0 MacUnderrun frames 0 MacOverrun frames
0 Pause frames 0 Pause frames
0 Cos 0 Pause frames 0 Cos 0 Pause frames
0 Cos 1 Pause frames 0 Cos 1 Pause frames
0 Cos 2 Pause frames 0 Cos 2 Pause frames
0 Cos 3 Pause frames 0 Cos 3 Pause frames
0 Cos 4 Pause frames 0 Cos 4 Pause frames
0 Cos 5 Pause frames 0 Cos 5 Pause frames
0 Cos 6 Pause frames 0 Cos 6 Pause frames
0 Cos 7 Pause frames 0 Cos 7 Pause frames
0 Oam frames 0 OamProcessed frames
0 Oam frames 0 OamDropped frames
11378626066 Minimum size frames 1093777876 Minimum size frames
24632992818 65 to 127 byte frames 528920620 65 to 127 byte frames
1540669568 128 to 255 byte frames 662053805 128 to 255 byte frames
1450906391 256 to 511 byte frames 679749755 256 to 511 byte frames
940421818 512 to 1023 byte frames 774388121 512 to 1023 byte frames
13452630911 1024 to 1518 byte frames 126918949771 1024 to 1518 byte frames
3160263 1519 to 2047 byte frames 815453927 1519 to 2047 byte frames
0 2048 to 4095 byte frames 15214 2048 to 4095 byte frames
0 4096 to 8191 byte frames 0 4096 to 8191 byte frames
0 8192 to 16383 byte frames 0 8192 to 16383 byte frames
0 16384 to 32767 byte frame 0 16384 to 32767 byte frame
0 > 32768 byte frames 0 > 32768 byte frames
0 Late collision frames 47595912 SymbolErr frames
178713476 Excess Defer frames 574 Collision fragments
0 Good (1 coll) frames 41 ValidUnderSize frames
0 Good (>1 coll) frames 7029 InvalidOverSize frames
0 Deferred frames 75329 ValidOverSize frames
0 Gold frames dropped 87818 FcsErr frames
0 Gold frames truncated
0 Gold frames successful
0 1 collision frames
0 2 collision frames
0 3 collision frames
0 4 collision frames
0 5 collision frames
0 6 collision frames
0 7 collision frames
0 8 collision frames
0 9 collision frames
0 10 collision frames
0 11 collision frames
0 12 collision frames
0 13 collision frames
0 14 collision frames
0 15 collision frames
0 Excess collision frames

LAST UPDATE 4560 msecs AGO

[Leo Laohoo]

Replace the SFP in Ten 1/0/2.

[Manish Manwal]

you mean to say, that sfp port problem. and we have to change sfp port.
other port or it is compulsory to move te1/0/2.

[Leo Laohoo]

Currently, I am suspecting this is an SFP problem.