how to solve CRC, frame, abort, interface resets, collisions, deferred

[mariafg]

I've a WAN joined by 4 routers. Two in one local site, and two in another remote site.
In each site, there are two lans, so, each router is for the communication of each lan.
We use ethernet port of the router for connect the lan of each site, and then, we use the serial port of the router for connecting a 2Mb/s line which is connecting the two sites.
All seems working properly, but in the router statistics, I can view the following errors that I don't know how to solve, it means, what can I do in order to improve our network?

In the ethernet local site: 13038825 input errors, 13038825 CRC
In the serial port local site: 397 input errors, 281 CRC, 113 frame, 0 overrun, 0 ignored, 3 abort
21 interface resets

In the other router for ethernet local site: 3230857 collisions, 0 interface resets
0 babbles, 0 late collision, 679902 deferred
In the other router for serial local site: 1144010 input errors, 5947 CRC, 1137801 frame, 0 overrun, 0 ignored, 262 abort
70 interface resets

In the ethernet remote site: 17109104 collisions, 0 interface resets
0 babbles, 0 late collision, 6343397 deferred
In the serial port remote site: 5764148 input errors, 1106425 CRC, 4645089 frame, 0 overrun, 0 ignored, 12634 abort
162 interface resets

In the other router for ethernet remote site:
1033858 collisions, 0 interface resets
0 babbles, 0 late collision, 738882 deferred
In the other router for serial remote site:247119 input errors, 22 CRC, 3622 frame, 0 overrun, 0 ignored, 243475 abort
288 interface resets


Even more, I don't know why the first router is showing such a lot of CRC errors.

Could anyone help to me, please?
I would be very gratefully.

Maria

 

[mariafg]

More info about the routers. I send all the statistics:

ROGT1
Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 000a.4105.19a1 (bia 000a.4105.19a1)
Internet address is 10.10.10.6/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 250/255, txload 3/255, rxload 14/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 4w2d
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 6/75, 0 drops
5 minute input rate 556000 bits/sec, 125 packets/sec
5 minute output rate 125000 bits/sec, 101 packets/sec
372049292 packets input, 817861848 bytes, 0 no buffer
Received 246622 broadcasts, 0 runts, 0 giants, 0 throttles
13038825 input errors, 13038825 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
287760482 packets output, 556263738 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 output buffer failures, 0 output buffers swapped out

Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.1.1/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 67/255, rxload 14/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters 4w2d
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 117000 bits/sec, 99 packets/sec
5 minute output rate 539000 bits/sec, 125 packets/sec
287728258 packets input, 1963166539 bytes, 0 no buffer
Received 303191 broadcasts, 0 runts, 0 giants, 0 throttles
397 input errors, 281 CRC, 113 frame, 0 overrun, 0 ignored, 3 abort
372078053 packets output, 3692630292 bytes, 0 underruns
0 output errors, 0 collisions, 21 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

ROGT2
Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.2.1/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:03, output 00:00:00, output hang never
Last clearing of "show interface" counters 4w2d
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 4000 bits/sec, 16 packets/sec
5 minute output rate 3000 bits/sec, 15 packets/sec
45368649 packets input, 2689344680 bytes, 0 no buffer
Received 302977 broadcasts, 0 runts, 0 giants, 0 throttles
1144010 input errors, 5947 CRC, 1137801 frame, 0 overrun, 0 ignored,
262 abort
38651335 packets output, 2002341924 bytes, 0 underruns
0 output errors, 0 collisions, 70 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

Ethernet0/1 is up, line protocol is up
Hardware is AmdP2, address is 000a.4164.a082 (bia 000a.4164.a082)
Internet address is 10.10.11.7/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 4w2d
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 9000 bits/sec, 17 packets/sec
5 minute output rate 7000 bits/sec, 18 packets/sec
28347410 packets input, 1924128711 bytes, 0 no buffer
Received 161337 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
35360252 packets output, 2250312279 bytes, 0 underruns
0 output errors, 3230857 collisions, 0 interface resets
0 babbles, 0 late collision, 679902 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

ROSV1

Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 000a.4164.a141 (bia 000a.4164.a141)
Internet address is 10.10.12.6/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 14/255, rxload 3/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 9w2d
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 128000 bits/sec, 99 packets/sec
5 minute output rate 552000 bits/sec, 124 packets/sec
538578164 packets input, 1062287306 bytes, 0 no buffer
Received 20671 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
729404945 packets output, 1871908996 bytes, 0 underruns
0 output errors, 17109104 collisions, 0 interface resets
0 babbles, 0 late collision, 6343397 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.1.2/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 14/255, rxload 66/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters 9w2d
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 535000 bits/sec, 122 packets/sec
5 minute output rate 118000 bits/sec, 98 packets/sec
729392223 packets input, 3150756043 bytes, 0 no buffer
Received 654426 broadcasts, 0 runts, 0 giants, 0 throttles
5764148 input errors, 1106425 CRC, 4645089 frame, 0 overrun, 0
ignored, 12634 abort
539360995 packets output, 21659620 bytes, 0 underruns
0 output errors, 0 collisions, 162 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

ROSV2

Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.2.2/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 9w2d
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 4000 bits/sec, 16 packets/sec
5 minute output rate 5000 bits/sec, 18 packets/sec
194222785 packets input, 3295682921 bytes, 0 no buffer
Received 654422 broadcasts, 0 runts, 0 giants, 0 throttles
247119 input errors, 22 CRC, 3622 frame, 0 overrun, 0 ignored, 243475
abort
188403574 packets output, 1010164849 bytes, 0 underruns
0 output errors, 0 collisions, 288 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

Ethernet0/1 is up, line protocol is up
Hardware is AmdP2, address is 000a.4164.a022 (bia 000a.4164.a022)
Internet address is 10.10.13.7/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 9w2d
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 8000 bits/sec, 20 packets/sec
5 minute output rate 7000 bits/sec, 18 packets/sec
166023116 packets input, 892232914 bytes, 0 no buffer
Received 20600 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
172116448 packets output, 3274527353 bytes, 0 underruns
0 output errors, 1033858 collisions, 0 interface resets
0 babbles, 0 late collision, 738882 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

 

[rburke]

If you are getting CRC errors on an Ethernet interface that either means that there are problems in autonegotiation of speed and duplex, cabling errors, or you've extended the distance of the Ethernet cales too long and therefore it is losing bits(resulting in CRC errors). So, model of router is at the main site? Also, does the device it is plugged into (proably a hub or switch) support full and half duplex? Have you tried replacing any cables, especially that cale that is connected to the main sites Ethernet connection? Finally, does that Ethernet cale run a long ways, or run my anything that could e affecting the signal (some kind of EMI device)? Leet me know and I'm sure we can help you out..

Burke

 

[mariafg]

Thanks a lot Burke for your reply.
I will try to answer to your questions:
The routers in the main site are:
ROGT1 for one ethernet, and ROGT2 for another ethernet.
The router in the remote site are:
ROSV1 for connecting to the ROGT1, and ROSV2 for connecting to the ROGT2
1) About the autonegotiation of speed and duplex:
The routers are connected to some switches that have
other machines connected to the switches that are configured to 100HalfDuplex, but the router
can't be configured to 100HalfDuplex, so they are to 10HalfDuplex, and the switches ports are configured
to 10HalfDuplex. I don't know if it could be a
problem, but all the routers are configured in the same way, so, it seems strange that only
ROGT1 has CRC erors for Ethernet interface.
About the remote site, the ethernet port of the router configured to 10HalfDuplex is connected to a switch that is
not possible to configure, so, it's in autonegotation state.

2) I will check the cables and the distances, I don't have the machines in my site, so I need to
require the help of people on site, I will answer you as soon as I get the information.

The routers are connected to a 2Mb/s line through a E1 Interface Converter:

MARQUE: RAD
MODEL: RIC-E1
CONFIGURATION:
E1: unbalance
rx and tx code: hdb3
Timing: ext

You have talked to me about the CRC errors for ethernet interface.
What about the other errors, in serial line, and the collisions and deferred that exceed
the 2% rate?

Thanks a lot very much.
Have a nice day,
Maria

 

[mariafg]

ROUTER MODEL: CISCO3620-BL2
SWITCH MODEL: Catalyst 2950: 24 port 10/100 Ethernet switch

 

[routerman]

The sh int E0/0 output for ROGT1 shows something else, there is loads of traffic shown but NO collisions, which is unheard of for a HD LAN interface!

That could be a faulty router interface, as the collision detection circuit is not seeing any collisions, but there must be some with this traffic load.

The deferred packets are those that the router tried to send when the media was already in use, a collision would have occurred and the router would try again. This is a indication of a busy LAN, but not really a problem.

As for the serial interface counters, I would recommend clearing all interface counters first then checking all the serials after an hour or so, you should get a better idea of which (if any) links are experiencing problems.

 

[mariafg]

Routerman, thanks for your reply.

But I'm continuing lost in it. Please, I need more help!

About NO collisions on the E0/0 output for ROGT1 is very strange for me, because
we have a software implemented that tests if the lan way has a problem, this software uses pings in order to check the health of the lan. By fault, we use the ROGT1-ROSV1 way in order to communicate the two sites, but if the software sees that there is a problem in this way (if there is no answer in the ping reply), the traffic is redirected to ROGT2-ROSV2 way. In this moment, the machines are communicating through the ROGT1-ROSV1 way, it could be possible that our software doen't see the lost of paquets (0.6%), but in this case, I should see some collisions, shouldn't I?

I will reset all the counters in order to mark out the problem a little more.

Here, the statistics of some machines, the *GT* names are in the main site, and the *SV* names are in the remote site. Does it give any other clue?

FEPGT1
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 19239091 0 19239091 0 0 0
eri0 1500 FEPGT1 FEPGT1 625521147 174917 529243351 36 9463311 0
hme0 1500 FEPGT1 FEPGT1 207128503 545 206375099 0 1447956 0

FEPGT2
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 12789908 0 12789908 0 0 0
eri0 1500 FEPGT2 FEPGT2 619445381 275162 524771481 48 10978665 0
hme0 1500 FEPGT2 FEPGT2 205146413 396 204907546 0 1783922 0

IGWGT1
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 271238729 0 271238729 0 0 0
eri0 1500 IGWGT1 IGWGT1 192741060 71116 223649171 1 8128657 0
hme0 1500 IGWGT1 IGWGT1 57987385 13 44004038 0 124100 0

IGWGT2
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 127474086 0 127474086 0 0 0
eri0 1500 IGWGT2 IGWGT2 221039689 71620 156205494 1 2561369 0
hme0 1500 IGWGT2 IGWGT2 38204240 16 62108356 0 142040 0

PSMF1
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 508976589 0 508976589 0 0 0
qfe0 1500 PSMF1_qfe0 PSMF1_qfe0 1547179871 62 2474682930 0 175621063 0

qfe4 1500 PSMF1_qfe4 PSMF1_qfe4 96416899 0 155440030 0 9632711 0



PSMF2
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 773408 0 773408 0 0 0
qfe0 1500 PSMF2_qfe0 PSMF2_qfe0 167370116 114 147012466 0 7441479 0

qfe4 1500 PSMF2_qfe4 PSMF2_qfe4 32157276 16 30132614 0 613133 0









SDPGT1
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 86022581 0 86022581 0 0 0
qfe0 1500 SDPGT1_qfe0 SDPGT1_qfe0 695655890 59 605928218 0 12183851 0

qfe4 1500 SDPGT1_qfe4 SDPGT1_qfe4 50390729 18 45307645 0 861320 0



SDPGT2
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 417868016 0 417868016 0 0 0
qfe0 1500 SDPGT2_qfe0 SDPGT2_qfe0 687222843 21 621373388 0 14220616 0

qfe4 1500 SDPGT2_qfe4 SDPGT2_qfe4 173594119 11 239147820 0 9004535 0



SLEGT1
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 151665946 0 151665946 0 0 0
ce0 1500 SLEGT1 SLEGT1 1503415134 0 1357857748 0 30202115 0
ce1 1500 SLEGT1_ce1 SLEGT1_ce1 170353961 0 162959497 0 1209556 0


SLEGT2
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 151385026 0 151385026 0 0 0
ce0 1500 SLEGT2 SLEGT2 1460889050 0 1336005519 0 29018953 0
ce1 1500 SLEGT2_ce1 SLEGT2_ce1 212406683 0 185262710 0 2185440 0


SUGT1
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 349257640 0 349257640 0 0 0
qfe0 1500 SUGT1 SUGT1 761440105 0 532026675 0 34352085 0
qfe1 1500 SUGT1_qfe1 SUGT1_qfe1 71357371 0 72636942 0 484697 0

SUSV2
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 799507660 0 799507660 0 0 0
qfe0 1500 SUSV2 SUSV2 586504088 0 460498796 0 226817 0
qfe1 1500 SUSV2_qfe1 SUSV2_qfe1 119719584 0 116422708 0 12808 0

MUSV12
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 23969533 0 23969533 0 0 0
hme0 1500 MUSV12 MUSV12 210740752 0 164451628 0 36447 0
hme1 1500 MUSV12_hme1 MUSV12_hme1 57241812 0 58674946 1 1210 0

MUSV21
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 39793054 0 39793054 0 0 0
hme0 1500 MUSV21 MUSV21 425479161 0 337244916 0 87765 0
hme1 1500 MUSV21_hme1 MUSV21_hme1 101840553 0 103199458 0 4597 0

MUGT11
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 28867462 0 28867462 0 0 0
hme0 1500 MUGT11 MUGT11 504275155 0 409227791 0 5592301 0
hme1 1500 MUGT11_hme1 MUGT11_hme1 71409227 11 70778479 0 178119 0

MUGT22
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 30651411 0 30651411 0 0 0
hme0 1500 MUGT22 MUGT22 487582605 0 391200376 0 6024780 0
hme1 1500 MUGT22_hme1 MUGT22_hme1 70721622 116 70102912 0 290669 0

 

[mariafg]

We had the ROGT1 to full duplex mode, and the switch when it was connected to half duplex mode. After change the router to half duplex mode, there is no more CRC errors in ethernet0, but yes collisions and deferred.

After reset the statistic counters, we have the following error in the serial line, but only in one router. The statistics numbers are after 1 day of the reset:

ROGT1#show int
Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 000a.4105.19a1 (bia 000a.4105.19a1)
Internet address is 10.10.10.6/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 3/255, rxload 15/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 1d01h
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 589000 bits/sec, 129 packets/sec
5 minute output rate 129000 bits/sec, 98 packets/sec
10922551 packets input, 2147345497 bytes, 4 no buffer
Received 8359 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
7802089 packets output, 1343594613 bytes, 0 underruns
0 output errors, 1120735 collisions, 0 interface resets
0 babbles, 0 late collision, 141954 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.1.1/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 71/255, rxload 15/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:08, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d01h
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 121000 bits/sec, 97 packets/sec
5 minute output rate 569000 bits/sec, 128 packets/sec
7801368 packets input, 1265263015 bytes, 0 no buffer
Received 10509 broadcasts, 0 runts, 0 giants, 0 throttles
13 input errors, 8 CRC, 5 frame, 0 overrun, 0 ignored, 0 abort
10924594 packets output, 1981044423 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up



ROGT2
ROGT2#show int

Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.2.1/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:08, output 00:00:01, output hang never
Last clearing of "show interface" counters 1d01h
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 4000 bits/sec, 17 packets/sec
5 minute output rate 3000 bits/sec, 15 packets/sec
1933864 packets input, 79239864 bytes, 0 no buffer
Received 10554 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1818638 packets output, 75649096 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

Ethernet0/1 is up, line protocol is up
Hardware is AmdP2, address is 000a.4164.a082 (bia 000a.4164.a082)
Internet address is 10.10.11.7/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 1d01h
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 9000 bits/sec, 16 packets/sec
5 minute output rate 7000 bits/sec, 18 packets/sec
1453354 packets input, 87679334 bytes, 0 no buffer
Received 5441 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
1579401 packets output, 66962115 bytes, 0 underruns
0 output errors, 161824 collisions, 0 interface resets
0 babbles, 0 late collision, 44140 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

Are these serial line error important? What could be happening?

Thanks a lot.

 

[rburke]

Yeah, now that is looking much better...

If you are getting CRC and input errors on one Serial line, but not hte other then I would contact your circuit provider and have them run tests to determine if there is a device in your circuit that is causing those. If the circuit tests clean then it might be a cabling issue between the demarc and that serial interface taking errors. My first suggestion though is to call your circuit provider and have them test it....

Let me know if this helps.

Burke

 

[mariafg]

Hello,

after one day more, the results of the error in the serial line are:
ROGT1
ROGT1#show int
Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 000a.4105.19a1 (bia 000a.4105.19a1)
Internet address is 10.10.10.6/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 3/255, rxload 14/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
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 2d01h
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 587000 bits/sec, 132 packets/sec
5 minute output rate 134000 bits/sec, 100 packets/sec
21620887 packets input, 4152783910 bytes, 4 no buffer
Received 16599 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
15450639 packets output, 2659666902 bytes, 0 underruns
0 output errors, 2251493 collisions, 0 interface resets
0 babbles, 0 late collision, 283331 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Serial0/0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 10.1.1.1/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 71/255, rxload 15/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 2d01h
Queueing strategy: fifo
Output queue 0/100, 0 drops; input queue 0/150, 0 drops
5 minute input rate 126000 bits/sec, 99 packets/sec
5 minute output rate 573000 bits/sec, 132 packets/sec
15448594 packets input, 2504463475 bytes, 0 no buffer
Received 20809 broadcasts, 0 runts, 0 giants, 0 throttles
15 input errors, 9 CRC, 6 frame, 0 overrun, 0 ignored, 0 abort
21623869 packets output, 3823109144 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up


Can it be normal to have these errors? or we should have 0 errors?
Which quantity of error we can consider as a "normal behaviour"?

Thanks a lot,
Maria

 

[rburke]

Well, optimally you would have 0 for your errors, but things do happen occasionally. What I've heard is that for CRC errors you whould have at most 1 per million bytes transferred. But even in that case you should probably investigate the issue. From the looks of your errors (CRC and frame) it looks like it will be a circuit issue with the telco. Have you had them check the line yet? Let me know.

Burke