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False/bug RMON etherStatsCRCAlignErrors alarm ?

ernestoabarca
Level 1
Level 1

‎07-18-2017 02:53 AM

Hi all,

On the following firmware updated switch:

SG300-28MP 28-Port Gigabit PoE Managed Switch - L2 Mode
1.4.7.6
36b9386217cd2a45e8127cbaf0fd221d
1.3.5.58
482fea5c6731bc9d2739fcea78235720

1.3.5.06

I get this (false?) RMON ALERT sometimes:

Jul 18 09:14:49 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 18 09:14:59 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Falling Delta Actual(0) Thr.set(20) Interval(10)

As can be seen on threshold-intervals this happens in less than 10 seconds and being 65536 a 2^16 (max value unsigned int16) makes me think about a bug.

Interface stats:

Interface Bytes
Received		 Drop
Events		 Packets
Received		 Broadcast Packets
Received		 Multicast Packets
Received		 CRC & Align
Errors		 Undersize
Packets		 Oversize
Packets		 Fragments Jabbers Collisions Frames of
64 Bytes		 Frames of
65 to 127 Bytes		 Frames of
128 to 255 Bytes		 Frames of
256 to 511 Bytes		 Frames of
512 to 1023 Bytes		 Frames of
1024 Bytes or More
GE1 65813374 0 734930 2710 28492 0 0 0 0 0 0 0 693329 35379 264 5909 49
GE2 36114821 0 364557 2775 28491 0 0 0 0 0 0 0 328571 30037 124 5803 22
GE3 1671144930 0 8751407 25977 41504 0 0 0 0 0 0 2559976 4272346 968482 344552 127160 478891
GE4 178814721 0 849170 1604 28471 0 0 0 0 0 0 103036 15242 707380 428 22947 137
GE5 10903876 0 109421 1687 8 0 0 0 0 0 0 93834 9870 1 11 5703 2
GE6 2621131208 0 9755616 29701 13649 0 0 0 0 0 0 1784308 4234775 1945946 672733 147295 970559
GE7 714902726 0 16093503 347417 2866 0 0 0 0 0 0 3370267 9499337 269101 165252 160452 2629094
GE8 3208659740 0 2777431168 9884 53 0 0 0 0 0 0 91006496 12467903 28379810 6243768 8380550 2630952641
GE9 2777467199 0 13898937 341587 4849 0 0 0 0 0 0 2354944 4752125 4505736 1841614 44117 400401
GE10 3865733911 0 151175314 130863 0 0 0 0 0 0 0 53032774 4321957 2902301 1522835 2058284 87337163
GE11 10314468 0 103143 1756 6 0 0 0 0 0 0 92994 4436 1 10 5699 3
GE12 60375884 0 112521310 1901980 37937770 0 0 0 0 0 0 34088678 44662691 6415530 2976526 2152888 22224997
GE13 47670045 0 158260205 313805 1308352 0 0 0 0 0 0 24426923 25775233 5384256 2665521 3115106 96893166
GE14 3027069114 0 45914168 185184 880074 0 0 0 0 0 0 17351077 19676254 4171541 1927845 1347035 1440416
GE15 2568996061 0 23678844 43709 0 0 0 0 0 0 0 333267 20476684 1983030 158410 712217 15236
GE16 1205979056 0 3093176421 24483 854457 0 0 0 0 0 0 1927641051 277409689 261735808 355611 2919314 623114948
GE17 1198062219 0 7160390 32395 7470 0 0 0 0 0 0 2596737 3227443 772331 191715 49411 322753
GE18 1424861356 0 6347197 50720 2971 0 0 0 0 0 0 1931902 2524580 826235 353536 304666 406278
GE19 3605780802 0 9993305 1 69651 0 0 0 0 0 0 1907929 2036706 457020 441874 354157 4795619
GE20 3494925529 0 2604664633 85429 28 0 0 0 0 0 0 19707102 168612481 164826088 2086298 4190788 2245241876
GE21 89550053 0 727971 646 0 0 0 0 0 0 0 565608 87292 19463 29386 5 26217
GE22 719323027 0 1275873111 22552 0 0 0 0 0 0 0 6930202 39819477 108666346 3061135 2266940 1115129011
GE23 1636682347 0 6684456 55502 41262 0 0 0 0 0 0 2842229 1242138 1398303 373681 347357 480748
GE24 1065931196 0 230386278 11788247 53360443 0 0 0 0 0 0 120078560 69658482 22984536 8709823 3388816 5566061
GE25 1765281339 0 1157096462 368311 70021 0 0 0 0 0 0 623830556 206480195 168839399 48140373 15204088 1475741615
GE26 9334353 0 44859 18602 25348 0 0 0 0 0 0 936526667 267906508 251125870 26589600 15403643 2332888139
GE27 1339728140 0 61793644 926968 300834 0 0 0 0 0 0 41411659 97690958 20673174 6610345 3834229 27299084
GE28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Interface Bytes
Received		 Drop
Events		 Packets
Received		 Broadcast Packets
Received		 Multicast Packets
Received		 CRC & Align
Errors		 Undersize
Packets		 Oversize
Packets		 Fragments Jabbers Collisions Frames of
64 Bytes		 Frames of
65 to 127 Bytes		 Frames of
128 to 255 Bytes		 Frames of
256 to 511 Bytes		 Frames of
512 to 1023 Bytes		 Frames of
1024 Bytes or More
LAG 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LAG 2 2435206031 0 1113218872 442765 72598 0 0 0 0 0 0 115992420 192617258 193933177 8937696 13086266 588652055
LAG 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LAG 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LAG 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LAG 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LAG 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LAG 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0

Event Entry No. Log No. Log Time Description
1 51 2017-Jul-11 20:38:20 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 52 2017-Jul-11 20:38:30 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 53 2017-Jul-12 08:37:40 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 54 2017-Jul-12 08:37:50 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 55 2017-Jul-13 13:27:20 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 56 2017-Jul-13 13:27:30 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 57 2017-Jul-13 21:02:05 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 58 2017-Jul-13 21:02:15 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 59 2017-Jul-14 07:41:30 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.61 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 60 2017-Jul-14 07:41:40 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.61 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 61 2017-Jul-14 15:17:45 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 62 2017-Jul-14 15:17:55 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 63 2017-Jul-14 19:17:40 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.61 , Delta , Rising , Actual Val: 196608 , Thresh.Set: 10 , Interval(sec): 10
1 64 2017-Jul-14 19:18:30 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.61 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 65 2017-Jul-15 09:26:00 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 66 2017-Jul-15 09:26:10 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 67 2017-Jul-16 21:50:35 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 68 2017-Jul-16 21:50:45 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 69 2017-Jul-17 12:49:10 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 70 2017-Jul-17 12:49:20 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.62 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10
1 71 2017-Jul-18 10:14:50 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Rising , Actual Val: 65536 , Thresh.Set: 10 , Interval(sec): 10
1 72 2017-Jul-18 10:15:00 MIB Var.: 1.3.6.1.2.1.16.1.1.1.8.64 , Delta , Falling , Actual Val: 0 , Thresh.Set: 20 , Interval(sec): 10

Alarm
Entry
No. 		Interface Counter Name Counter
Value		 Sample Type Rising
Threshold 		Rising Event Falling
Threshold 		Falling Event Startup Alarm Interval
(sec)		 Owner
1 GE14 Frame Check Sequence (FCS) Errors 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
2 GE13 Frame Check Sequence (FCS) Errors 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
3 GE16 Frame Check Sequence (FCS) Errors 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
4 GE13 RMON Drop Events 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
5 GE14 RMON Drop Events 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
6 GE16 RMON Drop Events 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
7 GE13 RMON Collisions 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
8 GE14 RMON Collisions 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
9 GE16 RMON Collisions 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
10 GE13 RMON CRC&Align Errors 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
11 GE14 RMON CRC&Align Errors 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo
12 GE16 RMON CRC&Align Errors 0 Delta 10 desc1 20 desc1 Rising and Falling 10 yo

Any clue why this happens?

Thank you!

PD: etherStatsIndex=64 is interface GE16, it's a bit annoying to substract 48 to know the IF, not sure why on a fixed config switch if numbers do not correlate on a 1 by 1.

Labels:
0 Helpful
9 Replies 9

ernestoabarca
Level 1
Level 1

‎07-24-2017 07:00 AM

No community interest?

Not even Cisco?

0 Helpful

jonrodr2
Level 1
Level 1
In response to ernestoabarca

‎07-26-2017 01:45 PM

Hello,

I hope you are doing well, my name is Jonathan and I am part of Small business here at Cisco.

I apologize for any inconvenience with the unit. I will be trying to check if this is part of a bug or not, please let me know.

Are you experiencing any issues physically or with the performance on the unit?

can you share the topology that you have?

I would recommend to open a case with our department so that we can troubleshoot the unit in a better way.

Thanks.

https://supportforums.cisco.com/community/4626/small-business-service-and-support-country

0 Helpful

ernestoabarca
Level 1
Level 1
In response to jonrodr2

‎07-27-2017 04:14 AM

Hi Jonathan,

Thank you for your time, the reason to write here and not opening a case is that apparently error has no consequences (hence there considering it just a 'reporting bug').

> Are you experiencing any issues physically or with the performance on the unit?

I can not see any issues at the moment it happens.

> can you share the topology that you have?

Topology is relatively simple:

- This unit is the main one (STP root) and connects directly to servers and acts as Switch backbones. There is only one VLAN, and a LAG to a server.

- It connects to 4 TP-LINK SG3424 switches and few small dumb SW+AP

- The 3 links presenting this alert (other ports don't have RMON enabled) are important ones as they connect to: near Draytek router, remote backup and remote main phone call attendant (with a dumb SW+AP).

Do you need any exact detail?

> I would recommend to open a case with our department so that we can troubleshoot the unit in a better way.

As it doesn't look so bad, let's try to diagnose it a bit on the forum and decide after.

PD: I'm about to pass CCNA exam and I did a CCNP Master, feel free to ask anything you need!

0 Helpful

ernestoabarca
Level 1
Level 1
In response to ernestoabarca

‎08-03-2017 03:26 AM

Hi Jonathan,

All this started months ago when I saw (on the 10 year old Linksys gigabit 24 port switches, currently replaced by the TPLINK) some etherStatsDropEvents on some ports.

I replaced those switches and some of those connections stopped showing errors.

Since last message I added same RMON alarms to all interfaces, and some of them show similar problem:

Jul 28 09:09:28 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=72  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 28 12:17:49 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=51  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 28 13:36:34 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 29 00:05:04 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 30 01:10:50 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 30 12:29:30 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 31 08:39:46 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 31 09:44:11 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=71  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Jul 31 16:19:01 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=75  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  1 00:53:56 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  1 08:36:02 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  1 09:13:37 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=61  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  1 15:43:22 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=72  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  2 09:00:23 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  2 13:18:13 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  2 15:40:58 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Aug  3 10:43:29 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(65536) Thr.set(10) Interval(10)

Does this help you to point in some direction?

(On the mean time I will add RMON alarms to tp-link interfaces)

0 Helpful

ernestoabarca
Level 1
Level 1
In response to ernestoabarca

‎09-12-2017 07:17 AM - edited ‎09-12-2017 07:17 AM

A Linux monitoring all traffic via SPAN ports for VoIP shows those messages, some seem related to this problem:

 

[Tue Sep 12 07:24:46 2017] UDP: bad checksum. From 192.168.5.124:50251 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 07:46:50 2017] UDP: bad checksum. From 192.168.5.139:64306 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 08:27:11 2017] UDP: bad checksum. From 192.168.5.69:63142 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 09:24:46 2017] UDP: bad checksum. From 192.168.5.124:54909 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 09:46:50 2017] UDP: bad checksum. From 192.168.5.139:52126 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 10:13:55 2017] UDP: bad checksum. From 192.168.5.148:61666 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 10:27:11 2017] UDP: bad checksum. From 192.168.5.69:57259 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 11:24:46 2017] UDP: bad checksum. From 192.168.5.124:61607 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 11:46:51 2017] UDP: bad checksum. From 192.168.5.139:54413 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 12:13:56 2017] UDP: bad checksum. From 192.168.5.148:55288 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 12:27:12 2017] UDP: bad checksum. From 192.168.5.69:51601 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 12:58:58 2017] UDP: bad checksum. From 192.168.5.69:64899 to 255.255.255.255:7000 ulen 59
[Tue Sep 12 13:24:47 2017] UDP: bad checksum. From 192.168.5.124:59821 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 13:35:59 2017] UDP: bad checksum. From 192.168.5.139:64433 to 255.255.255.255:7000 ulen 65
[Tue Sep 12 13:46:51 2017] UDP: bad checksum. From 192.168.5.139:55238 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 14:13:56 2017] UDP: bad checksum. From 192.168.5.148:58383 to 255.255.255.255:15000 ulen 58
[Tue Sep 12 14:27:12 2017] UDP: bad checksum. From 192.168.5.69:62121 to 255.255.255.255:15000 ulen 58

 

UDP port 15.000 is being used by kaspersky network agent.

Only shown on ports with new Lenovo computers.

It could be a network driver issue, I will update them and keep this thread updated.

 

Throught anyway it's weird switch complains about 65.536 errors only by 1 packet.

0 Helpful

ernestoabarca
Level 1
Level 1
In response to ernestoabarca

‎09-18-2017 06:39 AM

Looking for a non-related problem I cleared statistics and this showed up:

    Rising Delta Actual(2147221505) (bin=111 1111 1111 1100 0000 0000 0000 0001)

Not clue why such high value, but doesn't surprise me the delta substraction gives a weird number if it's not prepared for variables sizes of 32 or 64 bit.

 

Let's see if this still happens....

 

Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=61  Rising Delta Actual(2147221505) Thr.set(10) Interval(10)
Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(2146500609) Thr.set(10) Interval(10)
Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(2146369537) Thr.set(10) Interval(10)
Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=72  Rising Delta Actual(2147221505) Thr.set(10) Interval(10)
Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=75  Rising Delta Actual(2147155969) Thr.set(10) Interval(10)
Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=56  Rising Delta Actual(2147418113) Thr.set(10) Interval(10)
Sep 18 14:30:26 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Rising Delta Actual(2147024897) Thr.set(10) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=61  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=72  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=75  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=56  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 18 14:30:36 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Falling Delta Actual(0) Thr.set(20) Interval(10)

0 Helpful

ernestoabarca
Level 1
Level 1
In response to ernestoabarca

‎09-20-2017 07:10 AM

Not related.

Disabling UDP CRC offload on the network driver (already MS supported latest version, Realtek latest version also suffers this) stopped sending those UDP packets.

 

But Switch still shows those CRC Align errors...

0 Helpful

ernestoabarca
Level 1
Level 1
In response to ernestoabarca

‎09-20-2017 07:13 AM

Two days later I cleared port statistics and we have that delta high values again:

 

 

Sep 20 03:22:39 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Sep 20 03:22:49 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 20 07:32:34 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Sep 20 07:32:44 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 20 13:48:45 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Rising Delta Actual(65536) Thr.set(10) Interval(10)
Sep 20 13:48:55 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 20 15:05:09 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Rising Delta Actual(2147418113) Thr.set(10) Interval(10)
Sep 20 15:05:10 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Rising Delta Actual(2147418113) Thr.set(10) Interval(10)
Sep 20 15:05:10 SWCisco RMON %RMON-I-rmonRisingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Rising Delta Actual(2147418113) Thr.set(10) Interval(10)
Sep 20 15:05:19 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=62  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 20 15:05:20 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=64  Falling Delta Actual(0) Thr.set(20) Interval(10)
Sep 20 15:05:20 SWCisco RMON %RMON-I-rmonFallingAlarm:   etherStatsTable, etherStatsCRCAlignErrors, etherStatsIndex=60  Falling Delta Actual(0) Thr.set(20) Interval(10)

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ernestoabarca
Level 1
Level 1
In response to ernestoabarca

‎08-17-2018 03:16 AM

Just to keep updated, one year later everything is still happening.

Anyway everything seems to work well.

Maybe new latest firmware would solve it but as I'm not anymore on that company... not sure if they will ever update and verify it.

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