Re: Xmit-Err

D@1984 · ‎02-12-2021

I've got 4 interfaces bundled between my switches. when I check the show int counter error, xmir-err is too high on those interfaces on one side. I've checked all interfaces on both sides and they are all configured full duplex, 100mb/s, I also have no buffer errors on the individual interfaces when I run show interface.

As I understand xmir-err is likely due to speed mismatch but the port-channel wouldn't be up if there was a speed mismatch( I have gigabit on one side and Fa on the other side though).

Is it something that I should be worried about? I have some devices on the switch with fa ports that stop working randomly, and I have to disconnect, reconnect them again to get them working (not sure if this is related to the errors), also some users connecting to that switch complain about performance and that they get better speed on wireless than LAN.

Leo Laohoo · ‎02-12-2021

D@1984 wrote:

I have gigabit on one side and Fa on the other side though

What speed are both ends negotiated to, 100 Mbps?

D@1984 · ‎02-12-2021

yes, output from show int po1:

MTU 1500 bytes, BW 400000 Kbit/sec, DLY 100 usec,

Leo Laohoo · ‎02-12-2021

D@1984 wrote:

MTU 1500 bytes, BW 400000 Kbit/sec, DLY 100 usec,

That is not the output I am looking for.

What SPEED are the members of the etherchannel (both sides) negotiate to?

D@1984 · ‎02-12-2021

what command shall I run? do I have to do it on the individual interface or po1?

Thanks

Leo Laohoo · ‎02-12-2021

Please post the complete output to the following commands (taken from both ends):

sh version
sh interface <PORTS> controll

D@1984 · ‎02-13-2021

please see below. I got the output from po1, do you need me to run the command for the individual interfaces too?

thanks

sw1#show version
Cisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 19-Jul-07 19:15 by nachen
Image text-base: 0x00003000, data-base: 0x01080000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SEC, RELEASE SOFTWARE (fc4)

uptime is 26 weeks, 1 day, 17 hours, 52 minutes
System returned to ROM by power-on
System restarted at 08:22:48 Fri Aug Jul 2020
System image file is "flash:c3750-ipbase-mz.122-35.SE5/c3750-ipbase-mz.122-35.SE5.bin"

cisco WS-C3750-48TS (PowerPC405) processor (revision N0) with 118784K/12280K bytes of memory.
Processor board ID FDO1233Y2
Last reset from power-on
1 Virtual Ethernet interface
96 FastEthernet interfaces
8 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:22:BE:EC:C9:80
Motherboard assembly number : 73-9680-10
Power supply part number : 341-0028-02
Motherboard serial number : FDO1233
Power supply serial number : DTN1224
Model revision number : N0
Motherboard revision number : B0
Model number : WS-C3750-48TS-S
System serial number : FDO1233
SFP Module assembly part number : 73-7757-03
SFP Module revision Number : A0
SFP Module serial number : FDO1233
Top Assembly Part Number : 800-25854-02
Top Assembly Revision Number : G0
Version ID : V05
CLEI Code Number : CNMV300CRE
Hardware Board Revision Number : 0x01

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C3750-48TS 12.2(35)SE5 C3750-IPBASE-M
2 52 WS-C3750-48TS 12.2(35)SE5 C3750-IPBASE-M

Switch 02
---------
Switch Uptime : 26 weeks, 1 day, 17 hours, 54 minutes
Base ethernet MAC Address : 00:23:33:50:38:00
Motherboard assembly number : 73-9680-10
Power supply part number : 341-0028-02
Motherboard serial number : FDO1236
Power supply serial number : LIT1227
Model revision number : N0
Motherboard revision number : B0
Model number : WS-C3750-48TS-S
System serial number : FDO1236
SFP Module assembly part number : 73-7757-03
SFP Module revision number : A0
SFP Module serial number : FDO1235
Top assembly part number : 800-25854-02
Top assembly revision number : G0
Version ID : V05
sw1#show int po1 controller
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 0023.3350.3824 (bia 0023.3350.3824)
Description: Link to
MTU 1500 bytes, BW 400000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 100Mb/s, link type is auto, media type is unknown
input flow-control is off, output flow-control is unsupported
Members in this channel: Fa1/0/1 Fa1/0/2 Fa2/0/1 Fa2/0/2
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 2d11h, 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 32000 bits/sec, 32 packets/sec
5 minute output rate 11000 bits/sec, 10 packets/sec
1633211897 packets input, 1312243668432 bytes, 0 no buffer
Received 266443103 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
1 input errors, 1 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 98169201 multicast, 0 pause input
0 input packets with dribble condition detected
1022933757 packets output, 330843971298 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

sw2#show version
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.04.E RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sat 13-Feb-16 03:45 by prod_rel_team

Cisco IOS-XE software, Copyright (c) 2005-2015 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.
ROM: IOS-XE ROMMON
BOOTLDR: MD0002R01.0112182013
uptime is 26 weeks, 1 day, 18 hours, 8 minutes
Uptime for this control processor is 26 weeks, 1 day, 18 hours, 14 minutes
System returned to ROM by Power Failure at 12:38:51 Wed Jul 6 2017
System restarted at 08:20:48 Fri Jun 12 2020
System image file is "flash:packages.conf"
Last reload reason: Power Failure
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.
License Level: Ipbase
License Type: Permanent
Next reload license Level: Ipbase
cisco WS-C3850-24P (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FCW1931D1
7 Virtual Ethernet interfaces
56 Gigabit Ethernet interfaces
8 Ten Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
250456K bytes of Crash Files at crashinfo:.
250456K bytes of Crash Files at crashinfo-2:.
1609272K bytes of Flash at flash:.
1609272K bytes of Flash at flash-2:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of Dummy USB Flash at usbflash0-2:.
0K bytes of at webui:.

Base Ethernet MAC Address : 00:8e:73:55:b9:80
Motherboard Assembly Number : 73-15805-04
Motherboard Serial Number : FOC2005
Model Revision Number : AA0
Motherboard Revision Number : B0
Model Number : WS-C3850-24P
System Serial Number : FCW1931

Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 32 WS-C3850-24P 03.06.04.E cat3k_caa-universalk9 INSTALL
2 32 WS-C3850-24P 03.06.04.E cat3k_caa-universalk9 INSTALL
Switch 02
---------
Switch uptime : 26 weeks, 1 day, 18 hours, 14 minutes
Base Ethernet MAC Address : 00:57:d2:93:b3:80
Motherboard Assembly Number : 73-15805-04
Motherboard Serial Number : FOC1947
Model Revision Number : Y0
Motherboard Revision Number : B0
Model Number : WS-C3850-24P
System Serial Number : FOC1931
sw2##show int po1 controller
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 0057.d293.a318 (bia 0057.d293.a318)
Description: Link to sw1
MTU 1500 bytes, BW 400000 Kbit/sec, 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, link type is auto, media type is
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi1/0/1 Gi1/0/2 Gi2/0/1 Gi2/0/2
ARP type: ARPA, ARP Timeout 04:00:00
Last input 2d11h, 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: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 10 packets/sec
5 minute output rate 29000 bits/sec, 25 packets/sec
1022938698 packets input, 330845069879 bytes, 0 no buffer
Received 129098193 broadcasts (114898843 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 114898843 multicast, 0 pause input
0 input packets with dribble condition detected
1633248165 packets output, 1312245426616 bytes, 0 underruns
2712387282 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

Leo Laohoo · ‎02-13-2021

D@1984 wrote:
2712387282 output errors

On the 3850, this value is disturbing.

Post the complete output to the following commands taken from the 3850:

sh interface Gi1/0/1 controll
sh interface Gi1/0/2 controll
sh interface Gi2/0/1 controll
sh interface Gi2/0/2 controll

An IOS-XE bug is not to be ruled out.

D@1984 · ‎02-14-2021

sw2#show int Gig 2/0/2 controller
GigabitEthernet2/0/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0057.d293.b314 (bia 0057.d293.b314)
MTU 1500 bytes, BW 100000 Kbit/sec, 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 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:25, 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: 183761817
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 5000 bits/sec, 1 packets/sec
5 minute output rate 6000 bits/sec, 11 packets/sec
237902976 packets input, 74210294687 bytes, 0 no buffer
Received 16539047 broadcasts (13925446 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 13925446 multicast, 0 pause input
0 input packets with dribble condition detected
525139671 packets output, 418070633968 bytes, 0 underruns
183761817 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 GigabitEthernet2/0/2 Receive
418070633968 Total bytes 74210294687 Total bytes
352455849 Unicast frames 221363929 Unicast frames
404849577423 Unicast bytes 72222982783 Unicast bytes
4108086 Multicast frames 13925446 Multicast frames
406573229 Multicast bytes 1657447028 Multicast bytes
168575736 Broadcast frames 2613601 Broadcast frames
12814483316 Broadcast bytes 329864876 Broadcast bytes
0 System FCS error frames 0 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
183086833 Minimum size frames 117710884 Minimum size frames
31133450 65 to 127 byte frames 28557305 65 to 127 byte frames
28219796 128 to 255 byte frames 28303232 128 to 255 byte frames
19501183 256 to 511 byte frames 22476213 256 to 511 byte frames
5960621 512 to 1023 byte frames 9107520 512 to 1023 byte frames
257237655 1024 to 1518 byte frames 31747803 1024 to 1518 byte frames
133 1519 to 2047 byte frames 19 1519 to 2047 byte frames
0 2048 to 4095 byte frames 0 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 0 SymbolErr frames
183761817 Excess Defer frames 0 Collision fragments
0 Good (1 coll) frames 0 ValidUnderSize frames
0 Good (>1 coll) frames 0 InvalidOverSize frames
0 Deferred frames 0 ValidOverSize frames
0 Gold frames dropped 0 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 2640 msecs AGO

sw2#show int Gig 1/0/2 controller
GigabitEthernet1/0/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 008e.7355.12a4 (bia 008e.7355.12a4)
MTU 1500 bytes, BW 100000 Kbit/sec, 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 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:22, 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: 1464545502
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 14000 bits/sec, 4 packets/sec
5 minute output rate 2000 bits/sec, 5 packets/sec
318732772 packets input, 116825498570 bytes, 0 no buffer
Received 91238715 broadcasts (86321776 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 86321776 multicast, 0 pause input
0 input packets with dribble condition detected
496574271 packets output, 384583027160 bytes, 0 underruns
1464545502 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 GigabitEthernet1/0/2 Receive
384583027160 Total bytes 116825498570 Total bytes
433771850 Unicast frames 227494057 Unicast frames
380009933290 Unicast bytes 88404723908 Unicast bytes
62633663 Multicast frames 86321776 Multicast frames
4544104402 Multicast bytes 27940056975 Multicast bytes
168758 Broadcast frames 4916939 Broadcast frames
28989468 Broadcast bytes 480717687 Broadcast bytes
0 System FCS error frames 0 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
90533338 Minimum size frames 103680948 Minimum size frames
70246795 65 to 127 byte frames 36985571 65 to 127 byte frames
56143171 128 to 255 byte frames 37238770 128 to 255 byte frames
31136905 256 to 511 byte frames 88991078 256 to 511 byte frames
15611967 512 to 1023 byte frames 9713569 512 to 1023 byte frames
232902095 1024 to 1518 byte frames 42122785 1024 to 1518 byte frames
0 1519 to 2047 byte frames 51 1519 to 2047 byte frames
0 2048 to 4095 byte frames 0 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 0 SymbolErr frames
1464545502 Excess Defer frames 0 Collision fragments
0 Good (1 coll) frames 0 ValidUnderSize frames
0 Good (>1 coll) frames 0 InvalidOverSize frames
0 Deferred frames 0 ValidOverSize frames
0 Gold frames dropped 0 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 2620 msecs AGO
sw2#show int Gig 2/0/1 controller
GigabitEthernet2/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0057.d293.b315 (bia 0057.d293.b315)
MTU 1500 bytes, BW 100000 Kbit/sec, 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 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:30, 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: 882945300
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 27000 bits/sec, 6 packets/sec
201153077 packets input, 52890673301 bytes, 0 no buffer
Received 7357258 broadcasts (4100514 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 4100514 multicast, 0 pause input
0 input packets with dribble condition detected
461000595 packets output, 411487759714 bytes, 0 underruns
882945300 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 GigabitEthernet2/0/1 Receive
411487759714 Total bytes 52890673301 Total bytes
440631019 Unicast frames 193795819 Unicast frames
408593821553 Unicast bytes 52086095115 Unicast bytes
20369576 Multicast frames 4100514 Multicast frames
2893938161 Multicast bytes 505647438 Multicast bytes
0 Broadcast frames 3256744 Broadcast frames
0 Broadcast bytes 298930748 Broadcast bytes
0 System FCS error frames 0 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
61455599 Minimum size frames 107808256 Minimum size frames
46154667 65 to 127 byte frames 20586789 65 to 127 byte frames
52904567 128 to 255 byte frames 31297453 128 to 255 byte frames
24301132 256 to 511 byte frames 13692478 256 to 511 byte frames
13107911 512 to 1023 byte frames 6621035 512 to 1023 byte frames
263074212 1024 to 1518 byte frames 21147066 1024 to 1518 byte frames
2507 1519 to 2047 byte frames 0 1519 to 2047 byte frames
0 2048 to 4095 byte frames 0 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 0 SymbolErr frames
882945300 Excess Defer frames 0 Collision fragments
0 Good (1 coll) frames 0 ValidUnderSize frames
0 Good (>1 coll) frames 0 InvalidOverSize frames
0 Deferred frames 0 ValidOverSize frames
0 Gold frames dropped 0 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 380 msecs AGO

sw2#show int Gig 1/0/1 controller
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 008e.7355.a123 (bia 008e.7355.a123)
MTU 1500 bytes, BW 100000 Kbit/sec, 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 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:21, 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: 181275120
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 5000 bits/sec, 4 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
266010639 packets input, 87314736264 bytes, 0 no buffer
Received 14043486 broadcasts (10582655 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 10582655 multicast, 0 pause input
0 input packets with dribble condition detected
151903141 packets output, 98342511450 bytes, 0 underruns
181275120 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 GigabitEthernet1/0/1 Receive
98342511450 Total bytes 87314736264 Total bytes
140656213 Unicast frames 251967153 Unicast frames
97086076747 Unicast bytes 85777451751 Unicast bytes
11246928 Multicast frames 10582655 Multicast frames
1256434703 Multicast bytes 1193600008 Multicast bytes
0 Broadcast frames 3460831 Broadcast frames
0 Broadcast bytes 343684505 Broadcast bytes
0 System FCS error frames 0 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
41224777 Minimum size frames 113757622 Minimum size frames
19883166 65 to 127 byte frames 41847299 65 to 127 byte frames
21203051 128 to 255 byte frames 39979779 128 to 255 byte frames
7497944 256 to 511 byte frames 25055974 256 to 511 byte frames
5462178 512 to 1023 byte frames 8382899 512 to 1023 byte frames
56632025 1024 to 1518 byte frames 36987066 1024 to 1518 byte frames
0 1519 to 2047 byte frames 0 1519 to 2047 byte frames
0 2048 to 4095 byte frames 0 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 0 SymbolErr frames
181275120 Excess Defer frames 0 Collision fragments
0 Good (1 coll) frames 0 ValidUnderSize frames
0 Good (>1 coll) frames 0 InvalidOverSize frames
0 Deferred frames 0 ValidOverSize frames
0 Gold frames dropped 0 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 1190 msecs AGO

Leo Laohoo · ‎02-14-2021

Right-o.

Notice the values of each interface's "Total Output Drops" and "Output Errors" are the same? This is due to a known bug, CSCvb65304.

The output also tells me the interfaces have very high Total Output Drops.

I am not a QoS expert so I will leave that to experts like @Joseph W. Doherty to look at.

D@1984 · ‎02-15-2021

thanks, it says however that the bug is not the cause of output drop, how can I decrease/eliminate those?

Thanks

Leo Laohoo · ‎02-15-2021

D@1984 wrote:

the cause of output drop, how can I decrease/eliminate those?

The Output Drops are due to QoS (or lack of). If @Joseph W. Doherty is not busy, he'll be able to assist.

In the meantime, try adding this command:

qos queue-softmax-multiplier 1200

After adding this, reboot the switch/stack to avoid hitting CSCvd38417.

Joseph W. Doherty · ‎02-15-2021

If the output errors are on the 3850, Leo's suggested command if often a very good starting point.

Let us know whether that command appears to reduce the number of output drops.

MHM Cisco World · ‎02-12-2021

from giga to Fa this make internal buffer full and error appear.

D@1984 · ‎02-12-2021

can this cause performance issue? this is how it's been set always but they are experiencing some issues only recently (I think the speed was always rubbish anyway)