Amber/Green light

[jfeo]

I have 4 3560 (C3560-IPBASEK9-M), Version 12.2(37)SE1 and lights most of the lights go from green to Amber I looked at the interfaces they are set to AUTO AUTO neg@ 10half no crc errors

Mode botton is set system STAT.

I have several others switches same set up and I do not get this

[Peter Paluch]

Hello,

In the STAT mode display, the amber LED signalizes that the port is basically blocked and does not transmit data. A port can be blocked for various reasons, mostly because the STP protocol decides for whatever reason that the port should be moved to a blocking state. Read this document for more detailed information about the meaning of port colors:

http://www.cisco.com/en/US/partner/docs/switches/lan/catalyst3560/hardware/installation/guide/higoverview.html#wp1059195

Do you also experience connectivity problems when the ports go amber?

Best regards,

Peter

[jfeo]

There doesn't seem to be any connectivity problems.

The port is Alternating green\amber but I do not see any errors

this is from one of the interfaces that the ports is alt between green/amber

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

86748 packets input, 12563593 bytes, 0 no buffer

Received 388 broadcasts (0 multicasts)

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

197735 packets output, 32221264 bytes, 0 underruns

0 output errors, 1185 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

[Leo Laohoo]

I noticed that this port has negotiated to 10/Half. This is the reason why you are having "1185 collisions". If you want to further "drill down" on this, use the command sh controller e . Most likely the amber-green are caused by collisions due to the half duplex.

Hope this helps.

[jfeo]

That is correc this is connected to a media converter that is only 10/half

here is controller command

Transmit FastEthernet0/25 Receive

32221264 Bytes 12563593 Bytes

85809 Unicast frames 86360 Unicast frames

20327 Multicast frames 0 Multicast frames

91599 Broadcast frames 388 Broadcast frames

0 Too old frames 12530933 Unicast bytes

364 Deferred frames 0 Multicast bytes

0 MTU exceeded frames 24832 Broadcast bytes

656 1 collision frames 0 Alignment errors

346 2 collision frames 0 FCS errors

140 3 collision frames 0 Oversize frames

40 4 collision frames 0 Undersize frames

3 5 collision frames 1943 Collision fragments

0 6 collision frames

0 7 collision frames 5813 Minimum size frames

0 8 collision frames 2421 65 to 127 byte frames

0 9 collision frames 78316 128 to 255 byte frames

0 10 collision frames 31 256 to 511 byte frames

0 11 collision frames 152 512 to 1023 byte frames

0 12 collision frames 15 1024 to 1518 byte frames

0 13 collision frames 0 Overrun frames

0 14 collision frames 0 Pause frames

0 15 collision frames

0 Excessive collisions 0 Symbol error frames

0 Late collisions 0 Invalid frames, too large

0 VLAN discard frames 0 Valid frames, too large

0 Excess defer frames 1943 Invalid frames, too small

42615 64 byte frames 0 Valid frames, too small

28637 127 byte frames

102046 255 byte frames 0 Too old frames

22096 511 byte frames 0 Valid oversize frames

248 1023 byte frames 0 System FCS error frames

2093 1518 byte frames 0 RxPortFifoFull drop frame

0 Too large frames

[Leo Laohoo]

Both Receive and Transmit shows moderate amount of collisions alright. The amber lights flashing from time to time is indicative of this. Is this the issue you are having?

[jfeo]

yes the only problem is customer has 500 hundred of these switches and these 4 on the only ones doing it only differnce I found

WS-C3560-48TS-S doing it

WS-C3560-48TS-E not doing it

[Lucien Avramov]

Check out this defect : CSCec53648 61-64 byte dot1q frames trigger LED to blink amber

[jfeo]

interesting

these ports are configured with

switchport mode access....

wonder if it from the terminals connected

[jfeo]

Still not sure I now seeing this at 2 sites out of 200 all same IOS and hardware.

while using this command sh int stats error

Port Single-Col Multi-Col

Fa0/2 9563 5932

Fa0/3 3907 2809

Fa0/4 0 0

Fa0/5 9886 6393

Fa0/6 0 0

Fa0/7 280 184

I get this and these are the ports the amber/green light happens every other errors are 0

I shouldn't see a amber/green on Single-Col but not sure on Multi-Col