[c-nsp] Broken byte counter?

[RH Lists]

Hi folks,  I'm running a 7206 with (C7200-JK9O3S-M), Version 12.3(5a) on it.
All of a sudden, my main PVC has stopped counting packets.  All the others
are fine, but one just won't count.  Just my luck, it happens to be our main
internet pvc. 

 

This is making MRTG unhappy and is making capacity planning rather
difficult.  Any ideas why?  If I go into conf t and into the interface, it
will sometimes count packets for a few seconds.

 

This interface has been up for 10 days and pushes a dozen mbps regularly:

 

ATM1/0.1 is up, line protocol is up

  Hardware is ENHANCED ATM PA

  Description: XXX

  Internet address is XXX

  MTU 4470 bytes, BW 14800 Kbit, DLY 80 usec,

     reliability 255/255, txload 16/255, rxload 16/255

  Encapsulation ATM

  38647 packets input, 532411 cells, 24802856 bytes

  39062 packets output, 296937 cells, 13518610 bytes

  5 OAM cells input, 5 OAM cells output

  AAL5 CRC errors : 0

  AAL5 SAR Timeouts : 0

  AAL5 Oversized SDUs : 0

  Last clearing of "show interface" counters never

 

And the interface statement:

 

interface ATM1/0.1 point-to-point

 description xxx

 bandwidth 15000

 ip address xxx

 ip access-group 2010 in

 ip access-group 110 out

 no ip redirects

 no ip unreachables

 no ip proxy-arp

 ip nbar protocol-discovery

 rate-limit input access-group 150 2008000 250000 250000 conform-action
transmit exceed-action drop  //

 rate-limit input access-group 160 496000 62500 62500 conform-action
transmit exceed-action drop

 rate-limit input access-group 170 5000000 375000 375000 conform-action
transmit exceed-action drop

 pvc 230/230

  cbr 15000

  oam-pvc manage

 !