[j-nsp] JUNOS 6.0R1.3 traffic statistic is not accurate?

[Yu-lin Chang]

Hi,

After upgrade to JUNOS 6.0R1.3 on my M160, I got something
wrong on the traffic statistics. The traffic statistics
are calculated by MRTG through SNMP (use 64bit counter). 
I did not modify MRTG config after upgrade the JUNOS.

I divide an ATM-OC12 into 5 PVCs (without traffic shaping).
The traffic statistics on the interface is not equal to 
the sum of this 5 PVCs. For example, the traffic on ATM-OC12 
interface is 100mbps, but the sum of 5 PVCs goes to 2 or 3 times
higher (200mbps+).

The same problem appears on the STM-1 and STM-4 SONET interfaces.
I also divide SONET interface into 3 pipes by using different 
DLCI numbers on Frame-Relay Encapsulation.

The traffic statistics on STM-1 or STM-4 interface have the same
behavior like the ATM-OC12 interface. The sum of traffics of
the DLCIs is much higher then the traffic on interface.

Anyone meets the same problem? Does this a bug of JUNOS 6.0R1.3? 
Thanks in advance.

BR,
Yu-lin
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P.S. my ATM and SONET interfaces hardware info are listd bellow.

> show chassis pic fpc-slot 0 pic-slot 0    
PIC fpc slot 0 pic slot 0 information:
  Type                             1x OC-12 ATM, MM
  ASIC type                        K chip
  State                            Online    
  PIC version                  1.5
  Uptime                         19 days, 6 hours, 46 minutes, 1 second

> show chassis pic fpc-slot 1 pic-slot 0    
PIC fpc slot 1 pic slot 0 information:
  Type                             4x STM-1 SDH, SMIR
  ASIC type                        D chip
  State                            Online    
  PIC version                  2.4
  Uptime                         19 days, 6 hours, 46 minutes, 5 seconds

> show chassis pic fpc-slot 2 pic-slot 0    
PIC fpc slot 2 pic slot 0 information:
  Type                             4x OC-12 SONET, SMIR
  ASIC type                        D chip
  State                            Online    
  PIC version                 1.13
  Uptime                         19 days, 6 hours, 46 minutes, 5 seconds
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