IUB TROUBLESHOOTING.pptx

INITIAL Iub TROUBLESHOOTIN G OVERVIEW 

           

Agenda 

Objective CPP O&m Concepts Protocols O&m Client Services Counters Overview Performance Management Iub over ATM ATM Initial Counters Iub Analysis Fail After Amission IP Iub T!roug!put "uestions#

OBJECTIVE Main iea is introuce to t!e transport engineer t!e basic concepts of troubles!ooting on Iub interface$ by presenting initial counters an %PIs$ t!at coul !elp to efine w!ic! area nees furt!er investigations 'ase on t!ese conclusions$ networ( optimi)ation services can be performe

CPP O&M CONCEPTS Moshell is a suite of tools for O&M of  of CPP*base CPP*base noes. noes .

CPP is t!e Connectivity Pac(et Platform on w!ic! are base t!e following noes+ RNC, noes+  RNC, RBS, MGW, RXI.

Information collecte by CPP counters every ,- minutes in store in .ml files /0OP files1

Information are rea an store into a S"2 atabase on a aily basis

PROTOCOLS Protocols used for accessi! these ser"ices# 3 htt$ 3 usecure $rotocols %uecr$ted'# telet, ft$, iio$ 3 secure $rotocols %ecr$ted'# ssh, sft$, sslio$ 4O56 0S: + pm"s#ataFr amesLostSp i <  xx >

7ig! frame loss inicates potential congestion problems ..K  t!e supporte SPI /Sc!euling Priority Inicator1

 "SFrame#el   "SFrame#el a%#istri$u tion =  pm"s#ataFr   pm"s#ataFr ame#ela%&u$Spi < xx >

T!is counter inicates t!e percentage of times w!ere Iub congestion !as occurre per SPI /Sc!euling Priority Inicator1

6.perience !as s!own t!at in !ig! loae Iub cases$ t!is counter coul reac! values of about =-DL-J

low Control *o1 9S Throu!h$ut Site (alsis Stud Case  Counters were e.tracte an grap!s plotte to illustrate t!e 7S Frame 2oss 0atio an 7S2imitIub %PIs over time

low Control

6.amining t!e %PIs resulting grap!s below$ it was evient t!at t!e c!annel normally reserve for ClassA traffic /vc

Ot!er inication t!at t!e transport t ransport networ( is overloae$ coul be measure by fra)e loss couter $ t!at s!oul s !oul present values below :J  "SFrameLos sRatio =

 pm"s#ataFr amesLostSpi <  xx > *100%  pm"s#ataFr ames Re ceiveSpi <  xx > + pm"s#ataFr amesLostSpi <  xx >

If frame loss counter returns low values$ an Iub presents no limitation

IP I#! Thro#gh(#t

RNC Iu- throu!h$ut )oitori! @PIs+ @PIs +  Average Iub t!roug!put+ t!roug!put+ IUB_TR [ '$it / s ] =



 pmSumCapac  pmSumCap acity  pmSamplesCapacity

 Average Iub t!roug!put t!roug!put regulate wit!in wit!in 0OP+ IUB_TR_  RE*[ '$it / s ]



=

 pmSumCapacity Re gulation  pmSamplesCapacity Re gulation

Perios of Iub T!roug!pu T!roug!putt limitation+

 &U) + T"R +RE*+  #URAT&ON [ sec ] =  pmTotalTi  pmTotalTim m   eCapacit%Regulate 

This @PIs o-ser"atio alo1s to uderstad 1he lo1 $erfor)ace is due iteral RNC li)itatio, ad ot - tras$ort et1or8.

IP IU) EVALUATION LOC*ART