Cisco 8540 Wireless Controller Received Packets with MAC Errors - FCS Errors

[commengineer]

I have 1 fiber connection in a port-channel for the 8540 Wireless Controller that consistently shows Received Packets with MAC Errors, FCS errors.  Only on 1 port out of the port-channel.  Before i start swapping out fiber cable or SPFs on the WLC or the far side, which is a cisco WS-C6506-E switch, i wanted to get a second set of eyes. Does this look to be physical issue?

All other ports in port-channel are clean on WLC side, no errors.  

[Leo Laohoo]

First off, the total number of FCS against the total input and output is insignificant.
If this is connected to a 6500, post the complete output to the command "sh counter int <PORT>".

[commengineer]

This is the output of "sh int counters" on the ten Gig interface on the 6500 side.

64 bit counters:
 0.                      rxHCTotalPkts = 88541569180
 1.                      txHCTotalPkts = 69256567692
 2.                    rxHCUnicastPkts = 88527351877
 3.                    txHCUnicastPkts = 69254242708
 4.                  rxHCMulticastPkts = 8006820
 5.                  txHCMulticastPkts = 2178282
 6.                  rxHCBroadcastPkts = 6210482
 7.                  txHCBroadcastPkts = 146702
 8.                         rxHCOctets = 61072862770109
 9.                         txHCOctets = 43574040146585
10.                 rxTxHCPkts64Octets = 9147965971
11.            rxTxHCPkts65to127Octets = 17553140559
12.           rxTxHCPkts128to255Octets = 55731770417
13.           rxTxHCPkts256to511Octets = 8130856020
14.          rxTxHCpkts512to1023Octets = 8320946988
15.         rxTxHCpkts1024to1518Octets = 58913456928
16.                    txHCTrunkFrames = 0
17.                    rxHCTrunkFrames = 2642009593
18.                     rxHCDropEvents = 0

32 bit counters:
 0.                   rxCRCAlignErrors = 9
 1.                   rxUndersizedPkts = 0
 2.                    rxOversizedPkts = 3078882093
 3.                     rxFragmentPkts = 0
 4.                          rxJabbers = 0
 5.                       txCollisions = 0
 6.                         ifInErrors = 22
 7.                        ifOutErrors = 0
 8.                       ifInDiscards = 26
 9.                  ifInUnknownProtos = 0
10.                      ifOutDiscards = 0
11.            txDelayExceededDiscards = 0
12.                              txCRC = 0
13.                         linkChange = 9
14.                   wrongEncapFrames = 0
All Port Counters
 1.                          InPackets = 88541521310
 2.                           InOctets = 61072832347197
 3.                        InUcastPkts = 88527304013
 4.                        InMcastPkts = 8006818
 5.                        InBcastPkts = 6210478
 6.                         OutPackets = 69256545973
 7.                          OutOctets = 43574018400942
 8.                       OutUcastPkts = 69254220990
 9.                       OutMcastPkts = 2178281
10.                       OutBcastPkts = 146702
11.                           AlignErr = 0
12.                             FCSErr = 9
13.                            XmitErr = 0
14.                             RcvErr = 22
15.                          UnderSize = 0
16.                          SingleCol = 0
17.                           MultiCol = 0
18.                            LateCol = 0
19.                       ExcessiveCol = 0
20.                       CarrierSense = 0
21.                              Runts = 0
22.                             Giants = 13
23.                         InDiscards = 13
24.                        OutDiscards = 0
25.                           InErrors = 22
26.                          OutErrors = 0
27.                    InUnknownProtos = 0
28.                              txCRC = 0
29.                      TrunkFramesTx = 0
30.                      TrunkFramesRx = 2641961729
31.                         WrongEncap = 0
32.     Broadcast_suppression_discards = 0
33.     Multicast_suppression_discards = 0
34.       Unicast_suppression_discards = 0
35.                 rxTxHCPkts64Octets = 9147961935
36.            rxTxHCPkts65to127Octets = 17553131363
37.           rxTxHCPkts128to255Octets = 55731756338
38.           rxTxHCPkts256to511Octets = 8130850847
39.          rxTxHCpkts512to1023Octets = 8320939464
40.         rxTxHCpkts1024to1518Octets = 58913427339
41.                         DropEvents = 0
42.                     CRCAlignErrors = 9
43.                     UndersizedPkts = 0
44.                      OversizedPkts = 3078852504
45.                       FragmentPkts = 0
46.                            Jabbers = 0
47.                         Collisions = 0
48.              DelayExceededDiscards = 0
49.                        bpduOutlost = 0
50.                        qos0Outlost = 0
51.                        qos1Outlost = 0
52.                        qos2Outlost = 0
53.                        qos3Outlost = 0
54.                        qos4Outlost = 0
55.                        qos5Outlost = 0
56.                        qos6Outlost = 0
57.                        qos7Outlost = 0
58.                        qos8Outlost = 0
59.                        qos9Outlost = 0
60.                       qos10Outlost = 0
61.                       qos11Outlost = 0
62.                       qos12Outlost = 0
63.                       qos13Outlost = 0
64.                       qos14Outlost = 0
65.                       qos15Outlost = 0
66.                       qos16Outlost = 0
67.                       qos17Outlost = 0
68.                       qos18Outlost = 0
69.                       qos19Outlost = 0
70.                       qos20Outlost = 0
71.                       qos21Outlost = 0
72.                       qos22Outlost = 0
73.                       qos23Outlost = 0
74.                       qos24Outlost = 0
75.                       qos25Outlost = 0
76.                       qos26Outlost = 0
77.                       qos27Outlost = 0
78.                       qos28Outlost = 0
79.                       qos29Outlost = 0
80.                       qos30Outlost = 0
81.                       qos31Outlost = 0
82.                    bpduCbicOutlost = 0
83.                    qos0CbicOutlost = 0
84.                    qos1CbicOutlost = 0
85.                    qos2CbicOutlost = 0
86.                    qos3CbicOutlost = 0
87.                         bpduInlost = 0
88.                         qos0Inlost = 0
89.                         qos1Inlost = 0
90.                         qos2Inlost = 0
91.                         qos3Inlost = 0
92.                         qos4Inlost = 0
93.                         qos5Inlost = 0
94.                         qos6Inlost = 0
95.                         qos7Inlost = 0
96.                         qos8Inlost = 0
97.                         qos9Inlost = 0
98.                        qos10Inlost = 0
99.                        qos11Inlost = 0
100.                        qos12Inlost = 0
101.                        qos13Inlost = 0
102.                        qos14Inlost = 0
103.                        qos15Inlost = 0
104.                        qos16Inlost = 0
105.                        qos17Inlost = 0
106.                        qos18Inlost = 0
107.                        qos19Inlost = 0
108.                        qos20Inlost = 0
109.                        qos21Inlost = 0
110.                        qos22Inlost = 0
111.                        qos23Inlost = 0
112.                        qos24Inlost = 0
113.                        qos25Inlost = 0
114.                        qos26Inlost = 0
115.                        qos27Inlost = 0
116.                        qos28Inlost = 0
117.                        qos29Inlost = 0
118.                        qos30Inlost = 0
119.                        qos31Inlost = 0
120.                         pqueInlost = 0
121.                           Overruns = 0
122.                           maxIndex = 0

[Leo Laohoo]

Output shows the line is fine.

[commengineer]

Thanks, I just thought it was weird that i have FCS errors counting up only on one interface in port-channel

and all the others are clean.

[Leo Laohoo]

Could be a bug with the 8540.
What firmware is the 8540 running on?

[commengineer]

Yeah i suppose it could be, but I'm running 8.5.135.0 on other controllers as well and all ports are clean on those.

just this one WLC on one port from a 6500 series.  FCS errors from what i understand can be caused by possible bad or dirty fiber jumpers or maybe bad SFP or interface on the 6500?  I don't like having errors on my interfaces... haha.