Oracle Communications EAGLE (Software)
 

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False UAM 0437 System SCCP TPS capacity exceeded when database split feature is turned on

When the traffic is below the system SCCP capacity, the alarm is reported in rept-stat-trbl, and rept-stat-sccp:mode=perf:data=


This is incorrect behavior.

In this Document

Symptoms

Cause

Solution

References

Created from <SR 3-13117900341>

Applies to:

Symptoms

EAGLE generates UAM 0437 (System SCCP TPS capacity exceeded alarm) for SCCP DN or IMSI subsystem even when the current TPS usage for the subsystem is below the available SCCP TPS capacity for that subsystem.

“TOTAL MSU RATE” printed by Rept-stat-sccp:data=<subsystem type – DN /IMSI> shows the current TPS usage and “System Total SCCP Capacity” shows the available SCCP TPS capacity for the subsystem

Cause

It is a false alarm, as there are any service denials or message discards in MFC stats. and the "AVERAGE MSU USAGE" or "TOTAL MSU RATE" rate are below the configured maximum TPS

This is related with known issue described in BUG 22987727 - R46.3_ST:Incorrect SCCP status displayed in rept-stat-sccp:data=elap:mode=perf that will be fixed in R6.5
 
Service denied for all the cards showing zero means none of the services are denied by any card . and if you see the total statistics of the PDU , you can see none of the PDU is discarded during the transaction .

hence these are not a service impacting issue and this is only a false alarm .

  eaglestp 16-08-02 11:08:50 MST EAGLE5 46.2.0-67.10.0
  SCCP SUBSYSTEM REPORT IS-NR Active -----
  SCCP ALARM STATUS = No Alarms
  GFLEX SERVICE REPORT IS-NR Active -----
  GFLEX ALARM STATUS = No Alarms
  MNP SERVICE REPORT IS-NR Active -----
  MNP ALARM STATUS = No Alarms
  
  SCCP Cards Configured=14 Cards IS-NR=14
  System Daily Peak SCCP Load 41827 TPS 16-08-02 10:12:07
  System Overall Peak SCCP Load 48010 TPS 16-06-29 16:50:47
  System Total SCCP Capacity 140000 TPS (140000 max SCCP Capacity)
  System SCCP Capacity Calc. Method (N)
  System TPS Alarm Threshold 112000 TPS ( 80% System N SCCP Capacity)
  
  TPS STATISTICS
  ===========================================================================
  CARD CPU TOTAL CLASS 0 CLASS 1 DATA
  USAGE MSU RATE MESSAGING RATE MESSAGING RATE TYPE
  -----------------------------------------------------------------------
  1201 6% 2507 1880 627 DN
  1207 4% 1472 1456 16 IMSI
  1217 4% 1507 1491 16 IMSI
  1301 12% 6255 6252 3 IMSI
  1307 6% 2610 2436 174 DN
  1317 6% 2591 2432 159 DN
  2107 7% 3136 2883 253 DN
  2117 10% 5009 4723 286 IMSI
  2201 10% 6049 5742 307 IMSI
  2207 4% 1597 1168 429 DN
  2217 4% 1508 1121 387 DN
  2301 3% 1081 709 372 DN
  2311 3% 1154 766 388 DN
  2317 7% 3322 3129 193 IMSI
  -----------------------------------------------------------------------
  AVERAGE MSU USAGE = 25%
  AVERAGE CPU USAGE = 6%
  TOTAL MSU RATE = 39798
  
  STATISTICS FOR PAST 30 SECONDS
  =========================================================================
  TOTAL MSUS: 1676018
  TOTAL ERRORS: 24
  
  HIGHEST 10 OVERALL DAILY PEAKS
  ====================================
  TPS s% d% i% DATE TIME
  ------------------------------------
  48010 100/0 /0 16-06-29 16:50:47
  47143 100/0 /0 16-07-01 17:37:20
  47023 100/0 /0 16-06-17 17:15:15
  46880 50 /42 /8 16-07-29 16:07:51
  46497 100/0 /0 16-06-24 17:10:00
  46339 100/0 /0 16-06-30 17:26:16
  46228 100/0 /0 16-06-22 17:26:51
  46182 100/0 /0 16-06-07 17:26:16
  46165 100/0 /0 16-06-16 17:29:37
  45903 100/0 /0 16-06-20 17:16:18
  
  LAST 10 DAILY PEAK SCCP LOADS
  ====================================
  TPS s% d% i% DATE TIME
  ------------------------------------
  41827 50 /43 /7 16-08-02 10:12:07
  44385 51 /42 /7 16-08-01 16:54:26
  40789 53 /39 /8 16-07-31 18:54:58
  43834 51 /42 /7 16-07-30 17:21:24
  46880 50 /42 /8 16-07-29 16:07:51
  44974 51 /42 /7 16-07-28 17:22:10
  44965 100/0 /0 16-07-27 18:44:47
  44583 100/0 /0 16-07-26 17:11:55
  43799 100/0 /0 16-07-25 17:35:42
  39794 100/0 /0 16-07-24 16:01:24
  
  Command Completed.
;

PER CARD VSCCP CLIENT DATA, TOTAL-5-MIN VALUES CALCULATED OVER PREV 5 MIN
  
  SVC SVC PDUS PDUS SRVR ON_SHLF
  RQSTS DENIED SENT DSCRD RESLCTD NOT_AVL
  ---------------------------------------------------------------------------
  183724 0 183724 0 0 183724
  CARD LOC: 1104 LAST 5 SERVERS: 2317,2201,2117,1301,1217
  
  209071 0 209071 0 0 209071
  CARD LOC: 1105 LAST 5 SERVERS: 2317,2201,2117,1301,1217
  
  199384 0 199384 0 0 199384
  CARD LOC: 1106 LAST 5 SERVERS: 2201,2117,1301,1217,1207

:

:

:
  124827 0 124827 0 0 124827
  CARD LOC: 3104 LAST 5 SERVERS: 2117,1301,1217,1207,2317
  
  ---------------------------------------------------------------------------
  SYSTEM TOTALS: PDUs SENT = 6222107 , PDUs DSCRD = 0

Solution

Upgrade the STPs to R46.4 when available

Verify periodically the TPS usage vs the configured maximum TPS

"AVERAGE MSU USAGE" or "TOTAL MSU RATE" rate can be used to determine actual MSU usage.

rept-stat-sccp:mode=perf

SCCP MFC stats can be used to make sure that there are no service denials or message discards.

rept-stat-mfc:mode=stats:service=scpdn:sample=tot24h
rept-stat-mfc:mode=stats:service=vsccp:sample=tot24h
rept-stat-mfc:mode=stats:service=scpimsi:sample=tot24h

References

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