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A Broadband Network Management Practice: KT Internet. 2006.9.28 Jinhyoun Youn ( [email protected] ) KT Network Strategic Group/ Internet Department. Contents. Brief History of KT Internet Service and NMS KT Internet Management Systems Experiences NeOSS-IP Core NMS Performance Measurements - PowerPoint PPT Presentation
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네트워크부문 인터넷담당네트워크부문 인터넷담당
A Broadband Network Management A Broadband Network Management Practice: KT Internet Practice: KT Internet
2006.9.28
Jinhyoun Youn ([email protected])
KT Network Strategic Group/
Internet Department
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
ContentsContentsContentsContents
Brief History of KT Internet Service and NMS
KT Internet Management Systems Experiences- NeOSS-IP Core NMS- Performance Measurements- Traffic Analysis- Routing Information Management- New Features for Premium Networks
Future Directions
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Brief History of KT Internet ServiceBrief History of KT Internet ServiceBrief History of KT Internet ServiceBrief History of KT Internet Service
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Brief History of KT Internet NMSsBrief History of KT Internet NMSsBrief History of KT Internet NMSsBrief History of KT Internet NMSs
At the initial stage(~1996), primitive monitoring and fault management functions based on the production systems like Openview or CiscoWorks were the main usage of Internet NMS
As the network grew, in-house software were much more preferred and KOSMOS(Kornet Service Managements and Operation Support systems,1996) was the first integrated style Internet NMS for KT. Simple monitoring functions were expanded to reacheability and availability management
As the portion of the Internet (and data networks) grew in the revenue, the interoperability with other infrastructure (espeially the main telco infrastructure) got much more important, and NEOSS-IP was confronted in 2002. Various Measurements and analysis were added.
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
KT Internet Service and Mgmt KT Internet Service and Mgmt KT Internet Service and Mgmt KT Internet Service and Mgmt
NeOSS-IP and its sub systems- CORE-NMS, Premium NMS, Multicast NMS, - Access NMS- Analysis Systems
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
NeOSS-IP and its SubsystemsNeOSS-IP and its SubsystemsNeOSS-IP and its SubsystemsNeOSS-IP and its Subsystems
NeOSS-IP is an NMS system for IP networks in KT NeOSS systems
NeOSS-IP includes subsystems for operation tools like- Traffic, Performance, RIB analysis systems- Configurations, Remote Operations support tools
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Performance MeasurementsPerformance MeasurementsPerformance MeasurementsPerformance Measurements
IPAS(Internet Performance Analysis System)- As a start point of service level (quality) managements- Like sorts of network weather systems- UDP/TCP active measurements over thousands of paths per minutes using pr
obes (special-purposed routers)- Focus on UDP and jitter delay and loss rather than simple ICMP stuffs
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Performance Measurements(2)Performance Measurements(2)Performance Measurements(2)Performance Measurements(2)
What we can learn from IPAS- General Packet Transmission or IP Service Quality Levels
over the backbone networks
- Abrupt packet transmission delays due to events on the backbone networks
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Traffic AnalysisTraffic AnalysisTraffic AnalysisTraffic Analysis
Three ways of Traffic Understanding- General traffic volume analysis using CORE-NMS- Traffic flow analysis using routers and IP-FLOW system- Traffic Packet Analysis using PACAS(Packet Characteristics Analysis system)
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Traffic Analysis (2)Traffic Analysis (2)Traffic Analysis (2)Traffic Analysis (2)
What we can learn from CORE-NMS- The total traffic volumes over KT backbone, overseas, IX networks- The link utilizations
What we can learn from IP-FLOW- The general trend of the traffic usage ex. per applications(ports), per ASN, per POPs/Access services and so on
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Traffic Analysis (3)Traffic Analysis (3)Traffic Analysis (3)Traffic Analysis (3)
What we can learn from PACAS- The analysis results can be used directly for engineering
Illegal packets with wrong IPs DDOS packets Out-of-Sequence/Order ratio and so on
- Packet Level Characteristics PDF of Packet Arrivals Traffic volumes at tiny time units(micorseconds units)
- Microscopic version of data which we can get from IP-Flows i.e. per ports/IP Addrs/ASN traffic distribution and so on
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Routing Information ManagementRouting Information ManagementRouting Information ManagementRouting Information Management
IRIMS(IP Routing Information Managements System) - Routes(Prefixes) changes archives- Realtime change monitoring supported
Routing Daemons and SNMP are used together
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Routing Information Management(2)Routing Information Management(2)Routing Information Management(2)Routing Information Management(2)
What we can learn from IRIMS- Real time routing information change monitoring- BGP Session and prefix changes monitoring- ISIS links changes monitoring- FLAPS and routing process overloads- Inconsistent AS
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
New Features for Premium New Features for Premium NetworksNetworksNew Features for Premium New Features for Premium NetworksNetworksMPLS managements- New elements for MPLS: LDP, LSP, LIB, MPLS IFs and Tunnels- Dynamic LSP managements- MPLS-TE Prototypes
QoS Managements- New elements for QoS(DIFF_SERV) : Queues and policies- DIFF_SERV management with backbone policy server
Per class Traffic, Delay, Jitter, Loss Per Tunnel Traffic
Multicast Managements- New elements for Multicasts: Multicast tunnels, RPs, Ifs,- IGMP, PIM_SM, MSDP Management
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Near Future: Beyond BroadbandNear Future: Beyond BroadbandNear Future: Beyond BroadbandNear Future: Beyond Broadband
Service Needs- More bandwidths- Various access technology- Personalization- Convergences in services
BCN Service Concepts
Broadband Convergence Network
high-quality broadband multimedia services Integrating telecom, broadcasting, and Internet seamlessly at anywhere, anytime, and using any devices
KEYWORDS: QoS, IPv6, MPLS, IMS, Convergence
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
BCN at the momentBCN at the momentBCN at the momentBCN at the moment
BcN(backbone network-the premium network) has been deploying since 2005- DIFFSERV for the basic backbone CoS- MPLS for the enhanced availability
Packetized Voice, IP-TV, and Wibro on the premium network - CoS applied for service classes
BcN Service Infrastructure including various control mechanisms will be implemented soon- IMS based service control systems: Resources and Services(Session)- Large-scale user(subscribers) handling features
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
NMS ExpectationsNMS ExpectationsNMS ExpectationsNMS Expectations
BROADBAND and its components have been the main NMS objects so far Mainly networks, elements, and facilities are main concerns for NMS
BROADBAND and its components have been the main NMS objects so far Mainly networks, elements, and facilities are main concerns for NMS
AS IS
Ubiquitous service and convergence might be regarded as the next themeEnd-to-end application/service supports will be the next concerns
Ubiquitous service and convergence might be regarded as the next themeEnd-to-end application/service supports will be the next concerns
To Be
The volumes, numbers, core-technologies of the networks will be continuously increasing
The underlying network functions and the services will be tightly coupled and the layering conventions will be ambiguous
Internet Dept/Network Strategic GroupInternet Dept/Network Strategic Group
Concluding Remarks : What we will Concluding Remarks : What we will dodoConcluding Remarks : What we will Concluding Remarks : What we will dodo
Even though the underlying technologies or networks is expected to be more complex, the NMS and its view for operators should be simpler: Integrated but selectable(and flexible) user interfaces
On the shared platforms, the interoperability between NMS systems for various networks/services should be achieved.
To support convergence trends, the unified platform for supporting customers will be more important.