Andmeside IRT 0030 loeng 719. okt. 2005 Avo Ots telekommunikatsiooni õppetool raadio- ja...
-
Upload
alvin-andrews -
Category
Documents
-
view
231 -
download
7
Transcript of Andmeside IRT 0030 loeng 719. okt. 2005 Avo Ots telekommunikatsiooni õppetool raadio- ja...
AndmesideIRT 0030
loeng 7 19. okt. 2005
Avo Ots
telekommunikatsiooni õppetoolraadio- ja sidetehnika instituut
Üldine võrgu infrastruktuurInternet
Teenuse-pakkujate
võrgud
Regionaalnetuumik-
võrk Kliendikodu-
võrgud
Juurde-pääsu-võrk
SideTeenuse kvaliteet (Q-o-S)
• Kättesaadav
• Vastuvõetava suurusega viide • Privaatne• Ainukordne/mitmene
• Hallatav
VõrguhaldusConfiguration Management - inventory, configuration, provisioning
Fault Management - reactive and proactive network fault management
Performance Management - # of packets dropped, timeouts, collisions, CRC errors
Security Management - SNMP doesn’t provide much here
Accounting Management - cost management and chargeback assessment
Asset Management - statistics of equipment, facility, and administration personnel
Planning Management - analysis of trends to help justify a network upgrade or bandwidth increase
Service Level Agreement (SLA)
Legal relationship with the Network Service Provider
• Clear expectations
• Measurable
• Redress
12 TTFTD
• T1– Time in milliseconds when a frame left the source
• T2– Time in milliseconds when a frame arrived at the
destination
Service Level Definitions
Frame Transfer Delay
SLA Verification Techniques
R
WAN Access
WAN CloudSwitch Switch
LANCPE
LANCPE
CLIENTSERVER
NIU NIU
Traditional service scope
What is Quality of Service?(QoS)
• Definition:– Requirements for service delivery quality
• Includes:– Bandwidth– Burst capability– Loss tolerance– Delay
Q-o-s
QoSPoliitika
QoS
Paketikäsitlus
Järjekord
QoS
QoS “end to end”
What is Class of Service? (CoS)
• Assign a connection to a group of similar connections
• Forward frames with priority based on the group
POLICE
Mida nõuda võrgult...
Töökindel,avardatav,paljutarbeline
Eluiga
Main-frame
CablingSoftware
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Years
LAN
Work-station
Kes pakuvad lahendusi•http://www.hp.com/go/openview/ HP OpenView
•http://www.tivoli.com/ IBM NetView
•http://www.novell.com/products/managewise/ Novell ManageWise
•http://www.sun.com/solstice/ Sun MicroSystems Solstice
•http://www.microsoft.com/smsmgmt/ Microsoft SMS Server
•http://www.compaq.com/products/servers/management/ Compaq Insight Manger
•http://www.redpt.com/ SnmpQL - ODBC Compliant
•http://www.empiretech.com/ Empire Technologies
•ftp://ftp.cinco.com/users/cinco/demo/ Cinco Networks NetXray
•http://www.netinst.com/html/snmp.html SNMP Collector (Win9X/NT)
•http://www.netinst.com/html/Observer.html Observer
•http://www.gordian.com/products_technologies/snmp.html Gordian’s SNMP Agent
•http://www.castlerock.com/ Castle Rock Computing
•http://www.adventnet.com/ Advent Network Management
•http://www.smplsft.com/ SimpleAgent, SimpleTester
Lõpulingid (loeng 8)• http://www.wtcs.org/snmp4tpc/FILES/
Reference/Francois/snmp.ppt
• http://www2.rad.com/networks/1998/snmp/overview.html
• http://www.tmdd.org/NEMATestingSummit/6-Testing-Tools-Session/ SimpleSoft/SNMPTools-NTCIP.ppt
• http://www.netlab.hut.fi/opetus/s38151/Luentomatsku/snmp.ppt