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Cisco Bug: CSCtd36186 - Cell count incorrect in show command for AAL0 L2 Ceop interfaces

Last Modified

Jan 15, 2017

Products (1)

  • Cisco 12000 Series Routers

Known Affected Releases

4.0.1.BASE

Description (partial)

RELEASE NOTE

Symptom:

tx_cells is calculated from tx_bytes using the formula
 
tx_cells = (tx_bytes + 51)/52
 
tx_bytes is obtained from the spa.
 
This tx_cells value is never equal to tx_packets and seems to be incorrect.
 
RP/0/5/CPU0:INDIA_IOX_ATM2#sh run int atm0/1/0/1.45
Fri Nov 20 13:53:28.102 UTC
interface ATM0/1/0/1.45 l2transport
 pvc 45/450
  service-policy output singleq
  encapsulation aal0
  shape cbr 500
 !
!
 
RP/0/5/CPU0:INDIA_IOX_ATM2#sh controllers atm0/1/0/1 traffic vc 45/450
Fri Nov 20 13:53:06.740 UTC
LC/0/1/CPU0:Nov 20 13:53:06.873 : g_spa_0[169]: spa_cema_atm_vc_stats_collector: Entered
LC/0/1/CPU0:Nov 20 13:53:06.877 : g_spa_0[169]: spa_cema_atm_vc_stats_collector Receive VC stats: byte=0, pak=0, oam=0, drop=0, uo=0, buf=0, crc=0, to=0, osz=0 bad_len=0, pcr_nonconform=0, scr_nonconform=0
LC/0/1/CPU0:Nov 20 13:53:06.877 : g_spa_0[169]: spa_cema_atm_vc_stats_collector Transmit VC stats: byte=115584, pak=2408, oam=0, drop=1640, clp1=0, clp1 drop=0, uo=0, buf=0, q_depth=1
LC/0/1/CPU0:Nov 20 13:53:06.878 : g_spa_0[169]: spa_cema_atm_vc_stats_collector ATM_VC_AAL0: rx byte=0, tx byte=115584
 
CONNID:15, rcid:0x0F10, scid:0x00A0
Rx Total Stats:
 rx_cells       :18                   rx_bytes      :864                
 rx_packets     :18                   rx_drops      :0                  
 rx_resource_err:0                    rx_other_err  :0                  
 pcr_violations :0                    scr_violation :0                  
 
Tx Total Stats:
 tx_cells       :2223                 tx_bytes      :115584             
 tx_packets     :2408                 tx_drops      :1640               
 tx_resource_err:0                    tx_other_err  :0                  
 tx_queue_depth :1                    tx_avg_q_depth:0             
 tx_random_drop :0                    tx_thresh_drop:1640               
RP/0/5/CPU0:INDIA_IOX_ATM2#sh run int atm0/1/0/1.45
Fri Nov 20 13:53:28.102 UTC
interface ATM0/1/0/1.45 l2transport
 pvc 45/450
  service-policy output singleq
  encapsulation aal0
  shape cbr 500
 !
!

Conditions:

This is seen only on Ceop spa
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