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compare with MRTG and 7606-S router for traffic


I got very curious problem about traffic.

now our customer is using MRTG for monitoring network traffic.

but it has a different traffic amount between them.

Our 7606-S router records around 5.0Gbit/sec but when we check traffic in MRTG, it records around 3.0Gbit/sec.

We are using TengigabyteEthernet port.

I used at the below command.

- show int te3/1

- show int te3/1 accounting

- show int te3/1 counters

- show int te3/1 counters storm-control

- show int te3/1 counters errors

- show int te3/1 states

- show int te3/1 status

- show int te3/1 summary

and this is our diagram ...

[ISP] - - - - [OpenIX] - - - -  [Our router 7606-S] - - - - [CoreSW]

                        <--------------->  this area has a problem because the TX rate too much ...than MRTG traffic.

If MRTG show the traffic amount 3.0G bit/sec, also our router shows at the smae traffic amount when I typed show int te3/1.

but they have a different traffic amount......

How do I solve this problem? Please let me know and if you know that leave some message for me.!!!!

this is our Ten Giga interface ....

Router-10G-KRN#sh int te3/1               
TenGigabitEthernet3/1 is up, line protocol is up (connected)
  Hardware is c7600 10Gb 802.3, address is x.x.x.x (bia x.x.x.x)
  Description: LINK-TO-OPENIX
  Internet address is X.X.X.X
  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 129/255, rxload 23/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 10Gb/s
  input flow-control is off, output flow-control is off
  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 1d02h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 909411000 bits/sec, 1252934 packets/sec
  30 second output rate 5077415000 bits/sec, 2175391 packets/sec <-- too much output traffic . it's 5.0G bit/sec.
  L2 Switched: ucast: 126397661 pkt, 11020803633 bytes - mcast: 1984786 pkt, 142837100 bytes
  L3 in Switched: ucast: 62204465709 pkt, 5678022265563 bytes - mcast: 0 pkt, 0 bytes mcast
  L3 out Switched: ucast: 108066369461 pkt, 30749529754908 bytes mcast: 0 pkt, 0 bytes
     62258838260 packets input, 5682471779406 bytes, 0 no buffer
     Received 2032799 broadcasts (690781 IP multicasts)
     0 runts, 0 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
     107880492952 packets output, 30703917284590 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

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