[c-nsp] FE experienceing errors and CRCs
Michael K. Smith
mksmith at noanet.net
Thu Apr 28 01:18:16 EDT 2005
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You might also want to set the keepalive on your cat-3524 port. It's
set to 10 (default) on your other port. I think the "keepalive"
command will set it to 10. You might also want to set "speed 100" on
both ends, but I don't think that will give you CRC's. I would still
look at the physical infrastructure. Maybe your second cable is also
bad. Maybe it's almost too long, or it's receiving interference from
something else, etc.
Mike
- --
Michael K. Smith mksmith at noanet.net
Senior Network and Systems Engineer NoaNet
(206) 963-3679 http://www.noanet.net
On Apr 27, 2005, at 9:26 AM, Kim Onnel wrote:
> Hi,
>
>
> I have an interface that generates CRCs and Errors,
>
> Cat-3524#sh ver
> Cisco Internetwork Operating System Software
> IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5.3)WC(1),
> MAINTENANCE
> INTERIM SOFTWARE
> Copyright (c) 1986-2001 by cisco Systems, Inc.
> Compiled Mon 30-Apr-01 07:51 by devgoyal
> Image text-base: 0x00003000, data-base: 0x003331F4
>
> ROM: Bootstrap program is C3500XL boot loader
>
> Cat-3524 uptime is 24 weeks, 10 hours, 40 minutes
> System returned to ROM by power-on
> System image file is "flash:c3500XL-c3h2s-mz.120-5.3.WC.1.bin"
>
>
>
> at-3524#sh int FastEthernet 0/2
> FastEthernet0/2 is up, line protocol is up
> Hardware is Fast Ethernet, address is 0006.288e.b602 (bia
> 0006.288e.b602)
> Description: new MCE
> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> reliability 255/255, txload 9/255, rxload 19/255
> Encapsulation ARPA, loopback not set
> Keepalive not set
> Full-duplex, Auto Speed (100), 100BaseTX/FX
> ARP type: ARPA, ARP Timeout 04:00:00
> Last input never, output 00:00:01, output hang never
> Last clearing of "show interface" counters 02:09:56
> Queueing strategy: fifo
> Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> 5 minute input rate 7603000 bits/sec, 1937 packets/sec
> 5 minute output rate 3723000 bits/sec, 1453 packets/sec
> 16243259 packets input, 3149513025 bytes
> Received 11677 broadcasts, 0 runts, 0 giants, 0 throttles
> 1749 input errors, 1749 CRC, 0 frame, 0 overrun, 0 ignored
> 0 watchdog, 14 multicast
> 0 input packets with dribble condition detected
> 11741374 packets output, 4034232096 bytes, 0 underruns
> 0 output errors, 0 collisions, 0 interface resets
> 0 babbles, 0 late collision, 0 deferred
>
> and the Errors, CRC increasing.
>
> This interface has the following configurations and is connected to an
> RPM-PR (7200 router)
>
> Cat-3524#sh run int FAstEthernet 0/2
> !
> interface FastEthernet0/2
> description new MCE
> duplex full
> end
>
>
>
> The adjacent interface on the RPM has the following configurations :
>
> MCE#sh run int FastEthernet 1/1
>
> interface FastEthernet1/1
> ip address x.x.110.3 255.255.255.192 secondary
> ip address x.1x.140.209 255.255.255.240 secondary
> ip address x3.2x.255.49 255.255.255.248 secondary
> ip address 2xx.x2.255.237 255.255.255.252 secondary
> ip address 1x.1x.200.2 255.255.255.0 secondary
> ip address x.1x.249.197 255.255.255.252 secondary
> ip address x.1x.235.193 255.255.255.192 secondary
> ip address 10.20.10.2 255.255.255.240 secondary
> ip address 1x.x.1.254 255.255.255.0 secondary
> ip address x.x0.110.251 255.255.255.192
> ip access-group block-worms in
> ip access-group block-worms out
> rate-limit input access-group rate-limit 100 2048000 5000 5000
> conform-action t
> ransmit exceed-action transmit
> rate-limit input access-group 114 5000000 900000 900000
> conform-action transmit
> exceed-action drop
> rate-limit input access-group 115 512000 64000 96000 conform-action
> transmit ex
> ceed-action drop
> rate-limit output access-group 114 5000000 900000 900000
> conform-action transmi
> t exceed-action drop
> rate-limit output access-group 115 512000 64000 96000 conform-action
> transmit e
> xceed-action drop
> rate-limit output access-group rate-limit 100 2048000 5000 5000
> conform-action
> transmit exceed-action transmit
> load-interval 30
> full-duplex
> no cdp enable
> end
>
> MCE#sh int FastEthernet 1/1
> FastEthernet1/1 is up, line protocol is up
> Hardware is DEC21140A, address is 0007.ec79.5ace (bia 0007.ec79.5ace)
> Internet address is x.x.110.251/26
> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> reliability 255/255, txload 18/255, rxload 8/255
> 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 02:53:17
> Queueing strategy: fifo
> Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> 30 second input rate 3353000 bits/sec, 1406 packets/sec
> 30 second output rate 7238000 bits/sec, 1875 packets/sec
> 15874784 packets input, 1083525547 bytes
> Received 6043 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> 0 watchdog
> 0 input packets with dribble condition detected
> 21790301 packets output, 1291808671 bytes, 2357 underruns
> 2357 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
>
> in my humble experience, i should try to
>
> 1) have the same duplex on both, which i think i have.
> 2) change cable, also done
>
> Whats my next step ?
>
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