Cisco 2611XM performance issues

TheGeekGirl · ‎11-22-2011

I am a newbe to troubleshooting performance issues on my Cisco 2611XM. I did know enough to show the interface and I see errors. (See below)

Do I need to be concerned about input errors? Those seem to be plentiful on both interfaces. FA0/0 has 498 lost carriers? Could someone point me in the direction where to go from here? Your help is greatly appreciated. (TheGeekGirl yep I'm a girl )

Gateway#show interfaces

FastEthernet0/0 is up, line protocol is up

Hardware is AmdFE, address is xxxxxxxx

Description: $FW_OUTSIDE$

Internet address is xxxxxxxxxx

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 7/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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: 0/75/963/0 (size/max/drops/flushes); Total output drops: 101

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 2788000 bits/sec, 272 packets/sec

5 minute output rate 169000 bits/sec, 186 packets/sec

1367033775 packets input, 4193748884 bytes

Received 22756 broadcasts, 0 runts, 0 giants, 0 throttles

1708292 input errors, 1708292 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

1096046292 packets output, 482805405 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

498 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

FastEthernet0/1 is up, line protocol is up

Hardware is AmdFE, address is xxxxxxxxxxxxxxxxxx

Description: $FW_INSIDE$

Internet address is xxxxxxxxxxxxxxxxxxxxxx

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 7/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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: 3/75/6797/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 179000 bits/sec, 198 packets/sec

5 minute output rate 2787000 bits/sec, 272 packets/sec

1164757213 packets input, 2673658922 bytes

Received 68017270 broadcasts, 0 runts, 0 giants, 0 throttles

1984511 input errors, 1984511 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

1363739305 packets output, 2900686239 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

vmiller · ‎11-22-2011

You "may " have a problem.

1. On the router, do a clear counters. we need to establish a time line and see what happens over the next 12/24 hours.

2. Double check the settings on the firewall attached to both interfaces, make sure speed and duplex match. You can do this without messing up the results of item #1.

3. The CRC errors on FE 0/0 are generally the result of a hardware failure. I would at a minimum plan on swapping the

cable out. if possible, finish test #1 first. if you do swap the cable, then restart test 1 from that point.

4. Its also possible that there are issues with either the firewall ethernet interface or the router.

TheGeekGirl · ‎11-27-2011

Hello!

1. I cleared the counters. The output below is for 10 hours.

2. I have checked my cables. They are all good.

4. Speed and duplex match.

5. There is no firewall involved.

6. I still have a lot of CRC errors.

7. This is a router.

Any thought about where I should do next?

TheGeekGirl

Gateway#show int

FastEthernet0/0 is up, line protocol is up

Hardware is AmdFE, address is xxxxxxxxx

Description: $FW_OUTSIDE$

Internet address is 206.128.127.227/29

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 10/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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 04:51:07

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 4168000 bits/sec, 439 packets/sec

5 minute output rate 328000 bits/sec, 315 packets/sec

5881430 packets input, 3083817288 bytes

Received 82 broadcasts, 0 runts, 0 giants, 0 throttles

6985 input errors, 6985 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

4109561 packets output, 617740710 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

FastEthernet0/1 is up, line protocol is up

Hardware is AmdFE, address is xxxxxxx

Description: $FW_INSIDE$

Internet address is 10.5.1.1/24

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 10/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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 04:51:09

Input queue: 0/75/3/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 342000 bits/sec, 328 packets/sec

5 minute output rate 4166000 bits/sec, 438 packets/sec

4339089 packets input, 642690872 bytes

Received 225819 broadcasts, 0 runts, 0 giants, 0 throttles

7943 input errors, 7943 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

5883239 packets output, 3081143625 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

Gateway#

Leo Laohoo · ‎11-27-2011

Wow. Look at your CRC errors GO!

What's connected to the router? Can you enable auto-negotiation of the speed and duplex?

Reza Sharifi · ‎11-27-2011

Hi,

So, this router is connected to 2 firewalls (inside and outside)? If yes, what is the speed and duplex on the firewall side of the connections?

What type of firewall?

HTH