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Input Erros - But no details


i'm wondering about an interface on an ASR920.


GigabitEthernet0/0/7 is up, line protocol is up
Hardware is 24xGE-4x10GE-FIXED-S, address is XXXX.XXXX.XXXX (bia XXXX.XXXX.XXXX)
Description: *** XXXXXXX ***
MTU 9000 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full Duplex, 1000Mbps, link type is auto, media type is LX
output flow-control is unsupported, input flow-control is on
Carrier delay is 0 msec
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:02, output hang never
Last clearing of "show interface" counters never
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 1688000 bits/sec, 312 packets/sec
30 second output rate 2015000 bits/sec, 320 packets/sec
5438829966 packets input, 4764810553374 bytes, 0 no buffer
Received 643624214 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
21299 input errors, 11 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 352452432 multicast, 0 pause input
2647783744 packets output, 1049807216626 bytes, 0 underruns
0 output errors, 0 collisions, 2 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


Input error is increasing. But nearly no CRC and no other errors. What`s going wrong to increase the Input Error Counter?





VIP Mentor

Re: Input Erros - But no details

what is the other device connected to this port, do you see same errors other side, any impact on performance ?


what is the version code running on this device.


*** Rate All Helpful Responses ***

Re: Input Erros - But no details

I don't know anything about the connected device. (Customer equipment)


show version:

Cisco IOS XE Software, Version 03.18.03.SP.156-2.SP3-ext
Cisco IOS Software, ASR920 Software (PPC_LINUX_IOSD-UNIVERSALK9_NPE-M), Version 15.6(2)SP3, RELEASE SOFTWARE (fc4)
Technical Support:
Copyright (c) 1986-2017 by Cisco Systems, Inc.
Compiled Tue 19-Sep-17 22:12 by mcpre

Cisco IOS-XE software, Copyright (c) 2005-2017 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.  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


mr012.fn uptime is 2 years, 7 weeks, 6 days, 13 hours, 5 minutes
Uptime for this control processor is 2 years, 7 weeks, 6 days, 13 hours, 7 minutes
System returned to ROM by reload at 04:35:07 CET Wed Jan 10 2018
System restarted at 04:50:03 CET Wed Jan 10 2018
System image file is "bootflash:asr920-universalk9_npe.03.18.03.SP.156-2.SP3-ext.bin"
Last reload reason: PowerOn

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License Level: advancedmetroipaccess
License Type: Permanent
Next reload license Level: advancedmetroipaccess

cisco ASR-920-24SZ-M (Freescale P2020) processor (revision 1.2 GHz) with 900304K/6147K bytes of memory.
Processor board ID CATXXXXXXXX
24 Gigabit Ethernet interfaces
4 Ten Gigabit Ethernet interfaces
32768K bytes of non-volatile configuration memory.
3670016K bytes of physical memory.
1328927K bytes of SD flash at bootflash:.

Configuration register is 0x2102