Web based Network Management Giáo viên: Học viên: Lớp: TS.. 05/31/24 10:13 Web based Network ManageMở đầu • Ngày nay, World-Wide Web WWW là ứng dụng Internet được sử dụng rộng rãi • Quản
Trang 1Web based Network
Management
Giáo viên:
Học viên:
Lớp:
TS Nguyễn Văn Tam Kiều Minh Việt
K17 - TDL&MMT
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Mở đầu
• Ngày nay, World-Wide Web (WWW) là ứng dụng Internet được sử dụng rộng rãi
• Quản trị mạng dựa trên web là việc sử dụng công nghệ này vào việc quản trị mạng và các hệ thống máy tính
• Lợi ích của việc quản trị mạng dựa trên web:
- Giảm chi phí bằng việc sử dụng công nghệ mở
- Hợp nhất các nền tảng quản trị riêng rẽ
- Đơn giản hoá việc quản trị bằng việc sử dụng giao diện người dùng chuẩn và phổ biến
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Hai trường hợp: quản trị thiết bị và quản trị
mạng
Web Server SNMP Manager SNMP Agent SNMP
HTTP
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Giao diện quản trị kép
• We introduced two typical Web-based network
management schemes: an HTTP-based element
management using Embedded Web server ( EWS-based EM ) and an SNMP-based network management using
front-end Web server ( SNMP-based NM )
• These two schemes have their own pros and cons
- Flexibility of management function: EWS-based EM is
better than SNMP-based NM ( especially the firmware
upgrade capability )
- Scalability: configuring hundreds of routers and switches via a Web browser is simply not scalable If there are many EWS-equipped network elements typical for large systems and networks, an administrator must open a Web browser for each device
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Giao diện quản trị kép
• Therefore, two models coexist in real world
• For users:
- Enhanced user interface
- But still too expensive for network management by
SNMP-based NM
- Another interface needed for element management by
EWS-based EM
• For equipment vendors
- Put EWS and SNMP agent into network devices
- Poor time-to-market and high cost
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Extended the EWS-based element management architecture to the network
management architecture
• Extended version of EWS-based element management
architecture
• Communications using HTTP
• Uses Java technology, especially the Java applet
• Two model: 2-tier and 3-tier architectures
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Extended the EWS-based element management architecture to the network
management architecture
• Supported basic management functions
- Notification: determines which events in device occurs on the basis of the event message and customizes the event message to notify administrator
- Data collection: gathers management data from the
device and stores the data it collects in the database
- Agent discovery: polls an EWS agent to initially discovery EWS equipped device and then detects configuration and status changes in the network
- Data setting: provides an administrator a mechanism for changing management information of a device
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Two-tier EWS-based NM architecture
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Three-tier architecture
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Management Information Server