[mrtg] Multicast & Broadcast Traffic Monitoring doesn't look quite right .

Yip Pui Fung Janice MOE1 NCS pfyip at ncs.com.sg
Fri Jul 20 06:24:25 MEST 2001


i'm monitoring multicast and broadcast traffic on my cisco router.
I used : 
target[xxxx]: at x.x.x.x

However, i noticed that the packets doesn't seem to tally with the stats on
the switch.
On average, i get about 300kb/s.

Is this correct?  If not, how can fine-tuned it?
Appreciate your inputs.


This is what i get on the switch :-

  Description: staff subnet 203
  Internet address is x.x.x.x/24
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation ARPA, loopback not set
  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
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 340 drops
  5 minute input rate 88000 bits/sec, 59 packets/sec
  5 minute output rate 471000 bits/sec, 68 packets/sec
     139077829 packets input, 2426257672 bytes, 0 no buffer
     Received 3499257 broadcasts, 0 runts, 0 giants, 6 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     157255480 packets output, 2817664741 bytes, 0 underruns
     0 output errors, 1 interface resets
     0 output buffer failures, 0 output buffers swapped out  

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