08-28-2012 06:42 AM - edited 03-04-2019 05:23 PM
I am getting input errors/runts on 2 of my gigabit interfaces that connect to our WAN service provider's network. In relation to total packets, its not a large number, so its probably not a big deal, but I'd just like to find the source so I stop seeing the errors in Solarwinds. Our service provider says that they don't see any errors on their side, but the errors are incoming to us.
I've tried to capture the traffic with Wireshark, but discovered that often these packets are either discarded or padded by NICs so Wireshark will not see them, or at least will not see them as undersized.
Is there any other way I can capture these packets so I can find the source and figure out how to stop them? Our equipment is 3750G running 12.2(55)SE. Its not a trunk port. I know there was a bug in prior IOS that would cause some frames to be marked as runts even though they were forwarded successfully.
TIA,
Matt
09-01-2012 03:40 AM
Hi Matt,
Can you post the output of the following commands:
1. sh interface
2. sh controller ether
3. sh version
FYI: 12.2(55)SE is an IOS train I would not recommend. Use the "higher" train, 12.2(55)SE5 or SE6.
09-04-2012 05:25 AM
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 18ef.6330.9242 (bia 18ef.6330.9242)
Description:
Internet address is
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/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 00:00:00, output 00:00:00, 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 4980000 bits/sec, 602 packets/sec
5 minute output rate 589000 bits/sec, 430 packets/sec
5062338892 packets input, 4744772133149 bytes, 0 no buffer
Received 2824877 broadcasts (1864097 IP multicasts)
4308417 runts, 0 giants, 0 throttles
4308417 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2295884 multicast, 0 pause input
0 input packets with dribble condition detected
3951823367 packets output, 1158349305808 bytes, 0 underruns
0 output errors, 0 collisions, 0 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
Transmit GigabitEthernet1/0/1 Receive
3006866293 Bytes 3180871679 Bytes
3951708752 Unicast frames 764594976 Unicast frames
143969 Multicast frames 2295901 Multicast frames
2965 Broadcast frames 528996 Broadcast frames
0 Too old frames 2553158655 Unicast bytes
0 Deferred frames 316965112 Multicast bytes
0 MTU exceeded frames 33855744 Broadcast bytes
0 1 collision frames 0 Alignment errors
0 2 collision frames 0 FCS errors
0 3 collision frames 0 Oversize frames
0 4 collision frames 4308449 Undersize frames
0 5 collision frames 0 Collision fragments
0 6 collision frames
0 7 collision frames 474595438 Minimum size frames
0 8 collision frames 1079291391 65 to 127 byte frames
0 9 collision frames 317273828 128 to 255 byte frames
0 10 collision frames 68993847 256 to 511 byte frames
0 11 collision frames 141786924 512 to 1023 byte frames
0 12 collision frames 2984754190 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 0 Invalid frames, too small
1626303732 64 byte frames 0 Valid frames, too small
1344583751 127 byte frames
292402492 255 byte frames 0 Too old frames
59212555 511 byte frames 0 Valid oversize frames
84793240 1023 byte frames 0 System FCS error frames
544559916 1518 byte frames 0 RxPortFifoFull drop frame
0 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames
Cisco IOS Software, C3750 Software (C3750-IPSERVICESK9-M), Version 12.2(55)SE, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Sat 07-Aug-10 22:45 by prod_rel_team
Image text-base: 0x01000000, data-base: 0x02F00000
ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)
flrlan-rpr uptime is 14 weeks, 1 day, 23 hours, 33 minutes
System returned to ROM by power-on
System image file is "flash:/c3750-ipservicesk9-mz.122-55.SE.bin"
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
cisco WS-C3750G-24PS (PowerPC405) processor (revision H0) with 131072K bytes of memory.
Processor board ID FOC1424W2Y8
Last reset from power-on
1 Virtual Ethernet interface
28 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 18:EF:63:30:92:00
Motherboard assembly number : 73-10217-08
Power supply part number : 341-0108-04
Motherboard serial number : FOC142351WW
Power supply serial number : DCA1422A07Q
Model revision number : H0
Motherboard revision number : C0
Model number : WS-C3750G-24PS-E
System serial number : FOC1424W2Y8
Top Assembly Part Number : 800-27482-02
Top Assembly Revision Number : E0
Version ID : V06
CLEI Code Number : COMXC00ARA
Hardware Board Revision Number : 0x09
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 28 WS-C3750G-24PS 12.2(55)SE C3750-IPSERVICESK9-M
Configuration register is 0xF
09-04-2012 05:26 AM
Thank you Leo. What are the differences between the SE train and the SE5 or SE6 train? I've never really understood the differences in the trains.
-Matt
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