the importance of smc service management center and quality of service for management of commercial...
Post on 20-Dec-2015
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The importance ofSMC Service Management Center
and Quality of Service for
management of commercial networks
Current Place of SMC in Narrowband WA Network (2/2)
ISPIAP
PROXY
SMCProxy SMC
RANER
RAN
RAN
RAN
Individual users
CorpLAN
Remoteuser
Alcatel Narrowband Enhancement (1/2)
SMC A1135
User authentification: name, password
User authorisation: access restrictions
User accounting: billing time/volume/speed
proxy supported
VPN based concentrationSession handlingNetwork adaptation
(Remote) user
Cost & performance
efficiency
RAN
SMC
DANA
ADSLBOOSTING BOOSTING the network: speed x 50
Using the POTS hard shoulder: Frequency modulation
Simple Plug-and-Play (Light ADSL)
Based on ATM
Universal Single Standard
Alcatels Narrowband Enhancement (2/2)
Broadband PPP/ATM RAN architecture
Actual Narrowband Service configuration
Applications
Video conf.
Crit. data
Telephony
Data
ISP 1 ISP 1 ISP n ISP n
Corp 1 Corp 1
Corp n Corp n
Customers
StandardStandard BronzeBronze SilverSilver GoldGoldService Level
256 - 384 Kb256 - 384 Kb
256 - 384 Kb
768Kb - 1.5 MB768Kb - 1.5 MB
768Kb - 1.5 MB768Kb - 1.5 MB256 - 384 Kb
Actual Narrowband Problems
POTS: Plain Old Telephone Service
Direct Client-PABX link: 100% reservated but...<<100% use
PSTN 64Kps available limit, Mps need: overload
Merely no differentiated customer groups, no differentiated services no differentiated billing
Hugh cost/performance ratio
Protocol conversions, large overhead
1997: Evolution of Wide Area Networks
ISPPublicLeased Line
Virtual network
Frame Relay/ATM
Tim
e e
volu
tion
Key TrendsKey Trends
• Traffic patterns: predictable chaotic
• WAN boundaries:separate integrated
• mission critical: separate integrated
• data volume: definedexponential
• requirement: data information
Historical future
Key NecessitiesKey Necessities
• increased bandwith
• extended reach
• enhanced ‘smart’ applications
• controlled behavior
Customer Satisfactory of WAN: actual requirements
Customer Satisfaction WAN (source: Newbridge)
0 1 2 3 4 5 6 7
customer service
reliability
speed/bandwith
ease of use
seamless integration
cost/performance
clarity of billing
simplified tariffs
speed of provisioning
geographic availability
degree of outsourcing
voice/data integration
satisfaction importancy
Customer Satisfactory WAN: actual requirements
-60
-40
-20
0
20
40
60
80
100
120
0 1 2 3 4 5 6 7
Customer Stress
Pre
se
nt
Va
lue
of
imp
rov
em
en
t
reliability
customer service
speed/bandwith
ease of use
cost/performance
seamless integration
clarity of billing
speed of provisioning
simplified tariffs
geographic availability
degree of outsourcing
voice/data integration
Future mixed (?) Users
Lotus Notes.lnk
SAP, BAAN
Database
Surfing
$
New apps impact mission-critical apps
@
Bandwith policy by creating application profiles
Based on Packet lossround trip delaytroughputpacket jitterone-way delayreachabilitynetwordk service availabilityduration of outagelenght of outages
Source: Framework for metrics for SLA
Internet surfing application profile
0
1
2
3
4
5
6
7
8
9
10
packet loss
secure data transfer
network outage
reachabilityround trip delay
throughput
packet jitter
SAP application profile
0
1
2
3
4
5
6
7
8
9
10
packet loss
secure data transfer
network outage
reachabilityround trip delay
throughput
packet jitter
Banking application profiles
0
1
2
3
4
5
6
7
8
9
10
packet loss
secure data transfer
network outage
reachabilityround trip delay
throughput
packet jitter
Every cube will be a VPNEvery cube will be a VPN
Applications
Video conf.
Crit. data
Telephony
Data
ISP 1 ISP 1 ISP n ISP n
Corp 1 Corp 1
Corp n Corp n
Customers
StandardStandard BronzeBronze SilverSilver GoldGoldService Level
Applicability of VPN’s
Applicability of VPN: policy enabled net
Is this user authorized to run this application?
What level of performance is needed to do the job?
What priority shouldthis application/user
receive?
1. Switching <> Routing: advantages and disadvantages.
Is the world willing to adapt :Benefits > development cost and investments ?
Is the world able to adapt:Backbone support ?
2. IP and ATM:
IP over ATM
Packet switching => no quality control
Cell switching: Priority indication
ATM
IP packet
Actual Discussion
Connection orientedswitching
Connectionlessrouting
Semi-Connection orientedrouting
Quality-driven Bandwith-driven