RE: Help: Giants packet cropping up !

From: Joseph Brunner (joe@affirmedsystems.com)
Date: Sun Oct 05 2008 - 01:38:51 ART


Would is possible to configure a route-map on the router receiving the
GIANTS that sends them to an unused interface where you run ip accounting or
netflow?

i.e.

route-map policy1 permit 10
 match length 1501 9000
 set interface FastEthernet0/1

int f0/0
ip policy route-map policy1

int f0/1
ip accounting output-packets
&or&
ip route-cache flow

?

-Joe

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of L
Pham
Sent: Sunday, October 05, 2008 12:18 AM
To: ccielab@groupstudy.com
Subject: Help: Giants packet cropping up !

  I suspect this cause my (downstream) SUP1 to reset at times ???
  No Connectivity downstream and I may have to travel to remote site
to reload the box.
  A bigger question is how to identify the bad guy that spil l out the
bad packet ?!

--- Two Upstream 6500 boxes-----
R1#sh int g5/7
GigabitEthernet5/7 is up, line protocol is up (connected)
  Hardware is C6k 1000Mb 802.3, address is 0018.b984.0324 (bia
0018.b984.0324)
  Description: *** VLAN 122 ***
  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 LH
  input flow-control is off, output flow-control is off
  Clock mode is auto
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 02:17:26, output 00:00:58, output hang never
  Last clearing of "show interface" counters 1y33w
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 6000 bits/sec, 8 packets/sec
     1403722237 packets input, 302769648497 bytes, 0 no buffer
     Received 36886663 broadcasts (2838260 multicasts)
     0 runts, 17242483 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     2361645022 packets output, 1376111640367 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
R1#Connection to x.y.122.2 closed by foreign host.
R2#sh int g5/7
GigabitEthernet5/7 is up, line protocol is up (connected)
  Hardware is C6k 1000Mb 802.3, address is 0018.b984.0cdc (bia
0018.b984.0cdc)
  Description: *** Connection to MTZ-CC-3.1 ***
  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 LH
  input flow-control is off, output flow-control is off
  Clock mode is auto
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 03:05:39, output 00:00:34, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 7000 bits/sec, 9 packets/sec
     48334654 packets input, 8637132670 bytes, 0 no buffer
     Received 23917033 broadcasts (23445259 multicasts)
     0 runts, 643546 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     788154933 packets output, 114681526263 bytes, 0 underruns
     0 output errors, 0 collisions, 4 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
R2#

   TIA,
   Loc

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