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RE: Broken 3640?
From: Martin Taylor <marty_taylor () yahoo com>
Date: Tue, 13 Jun 2000 10:50:03 -0700 (PDT)


wouldn't this question be better served at: 

comp.dcom.sys.cisco

it doesn't seem to fit the NANOG charter.

marty
--- Jeff Wheat <jeff () cetlink net> wrote:

We have an almost identical problem. I have a 3640
connected to a catalyst
2924XL. I have the switch and router both locked at
100/fdx. The crc error
counters increment on the switch. According to
cisco, this is related to
bug id CSCdm49462. In short, when using ISL, the
keeplives are not encap'd
so the switch sees this as a crc error. The
workaround is to disable
keepalives
on the router for that interface. Well we have tried
this and this does not
make a difference at all. We are still having
lockups and continous crc
errors.
Bug id CSCdm49462 is a duplicate of CSCdm31600,
which has been closed as
there
is a workaround (disable keepalives). If anyone can
offer anything else on
this
I would very much appreciate it. (We have done the
obvious and replaced
cables
and interfaces.)


2924XL:
FastEthernet0/1 is up, line protocol is up
  Hardware is Fast Ethernet, address is
0001.4257.e241 (bia 0001.4257.e241)
  Description: ISL Trunk Feed to RHSC Core
FastEthernet2/0
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 26/255, rxload
9/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:58, output 00:00:00, output hang
never
  Last clearing of "show interface" counters
21:28:28
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0
drops
  5 minute input rate 3788000 bits/sec, 2043
packets/sec
  5 minute output rate 10293000 bits/sec, 2302
packets/sec
     144755645 packets input, 235743734 bytes
     Received 154190 broadcasts, 0 runts, 0 giants,
0 throttles
     89993 input errors, 89993 CRC, 0 frame, 0
overrun, 585 ignored
     0 watchdog, 60165 multicast
     0 input packets with dribble condition detected
     153666041 packets output, 3705280485 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

3640:
FastEthernet2/0 is up, line protocol is up
  Hardware is AmdFE, address is 00e0.1edf.8ba0 (bia
00e0.1edf.8ba0)
  Description: RockHill Main and Colo Lans
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 10/255, rxload
26/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  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 1w2d
  Queueing strategy: fifo
  Output queue 0/40, 33091 drops; input queue 0/75,
370786 drops
  5 minute input rate 10277000 bits/sec, 2335
packets/sec
  5 minute output rate 4235000 bits/sec, 2078
packets/sec
     1450782711 packets input, 3672702950 bytes
     Received 6487551 broadcasts, 0 runts, 0 giants,
0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0
ignored
     0 watchdog, 0 multicast
     0 input packets with dribble condition detected
     1373258222 packets output, 2317298953 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

Regards,
Jeff

Lock the ports on the switch to 100FD, try a
different switch...


Heres a followup.

This is a show int on the interface.

FastEthernet2/0 is up, line protocol is up
  Hardware is AmdFE, address is 0050.547b.e8c0
(bia 0050.547b.e8c0)






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