Lucent Technologies Definity Release 8.2 Atm Installation Manual

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-37 Troubleshooting ATM-PNC 
6
ATM call control
Are ATM signaling connections being setup to ATM switch Call Control?
The UBR virtual c irc uits b etween the ATM switc h PPN p ort and  ATM switc h p ort 
and  b etween the 
EPN p ort and  ATM switc h p ort are ATM sig naling  c hannels 
b etween the p ort network and  the ATM switc h. They are used  to req uest 
c onnec tion setup s...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-38 Troubleshooting ATM-PNC 
6
Are talk paths being established between port networks?
Diagnostics. 
nCan you talk b oth ways on a set on one p ort network d ialed  from another 
port network and vice versa?
— The CBR (Constant Bit Rate) virtual c irc uits (VCs) b etween ATM 
switc h PPN p ort and  ATM switc h EPN p ort are used for talk p aths 
b etween p ort networks (PPN to EPN,...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-39 Troubleshooting ATM-PNC 
6
Incorrectly typed or omitted EPN route or 
end system identifier (ATM switch)
Symptoms
Talk p aths are one-way, from the PPN to the EPN: you c an hear tones from the 
PPN end  station to the EPN end  station b ut not vic e versa. Bec ause the sig naling  
c hannels are b id irec tional virtual c irc uits (VCs) estab lished from the PPN to the 
EPN,...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-40 Troubleshooting ATM-PNC 
6
Swapped routes, end system identifiers, or fiber
between two EPNs
Symptoms
nAll TN2305/TN2306 c irc uit pac ks are c ompletely inserted .
nThe PPN c old  starts b oth inc orrec tly c onnec ted  EPNs as usual.
nBo t h  EPN s  lo g  m a n y WRONG BOARD INSERTED
 errors (list configuration 
all
 or display circuit-packs 
carrier), p rovid ing  the EPNs ac...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-41 Troubleshooting ATM-PNC 
6
DEFINITY ECS ATM-PNC troubleshooting
commands 
Wid e-area networks (WAN), esp ec ially those c onstruc ted  as an internet using  
p ub lic  network fac ilities, may take inter-PN c onnec tivity to the ed ge of 
ac c ep tab le p erformanc e. The switc h may exp erienc e d elays, b loc kag es, or 
c onnec tion losses b ec ause of c irc umstanc es b eyond...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-42 Troubleshooting ATM-PNC 
6
Screen 6-16. PNC measurements pairs screen (change/display atm pnc-pairs)
Field descriptions
list measurements atm pnc-latency
This command reads and displays the collected information regarding ATM cell 
latenc y and  c onnec tion times. The c ommand -line syntax is: 
nlist measurements atm pnc-latency
 [last-hour, today-peak, 
yesterday-peak
] [print...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-43 Troubleshooting ATM-PNC 
6
If an ad ministered pnc -p air is c hang ed , the next time measurements are 
g athered , the 
today-peak entry for the old  p nc -p air is rep lac ed  with an entry for 
the new pair, and  all c ounters are set to 0.
Screen 6-17
 shows the output for this c ommand .
Screen 6-17. ATM-PNC latency measurements
Field descriptions
Conserving ATM bandwidth...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-44 Troubleshooting ATM-PNC 
6
ATM-PNC c onfig uration in whic h Inverse Multip lexing for ATM (IMA) is used  
g oing  into and  c oming  out of the network c loud . 
Figure 6-4. Bandwidth-constricted ATM network configuration
In this c onfig uration c onnec tions from the DEFINITY ECS switc h and the ATM 
b ac kb one switc h and  to the ATM ac c ess c onc entrator are OC-3/STM-1...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-45 Troubleshooting ATM-PNC 
6
network occurs. In such cases, SVC setups requested by DEFINITY can be 
d enied  b y the ATM network and  assoc iated  c omp onents, and  c alls are not 
completed.
In this sec tion, a failed  SVC setup  means that the ATM network has ac tively 
rejec ted  the req uest. A d elayed  SVC setup  means that the SVC setup  exc eed ed  
a time threshold , sp...

DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
6-46 Troubleshooting ATM-PNC 
6
SVC latency commands
Two rep orts are availab le to help  monitor the ATM network:
1. The ATM PNC Latenc y Histog ram rep ort (ac c essed  throug h the list 
measurements atm latency-histogram
 command) shows:
nSetup  c ount
nAd d Party c ount
ntotal
naverag e latenc ies
nhistog ram (21 d ifferent time b ins rang ing  from 0-9 msec . to + 10 
sec .)
Syn...