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HỌC VIỆN CÔNG NGHỆ BƯU CHÍNH VIỄN THÔNG
BÁO CÁO CHUYÊN ĐỀ
Nhóm 10
Tìm hiểu về giao thức OSPF
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Mục Lục
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1. Giới thiệu về giao thức định tuyến OSPF 7
2. Các thuật ngữ trong OSPF 8
2.1 Láng giềng( Neighbor) và mối quan hệ thân mật (adjacency)
8
2.2 Giao thức Hello
8
2.3 Các loại mạng 8
2.4 DR và BDR 9
2.5 Vùng ( Area ) 9
2.6 Liên kết: kênh truyền thông mạng
10
2.7 Trạng thái liên kết (link state) 10
2.8 Cơ sở dữ liệu topo( topology database )
10
2.9 Giá (cost): 10
2.10 Cơ sở dữ liệu gần kề (Adjacencies database):
10
3.Giao diện OSPF 10
3.1 Cấu trúc dữ liệu giao diện 10
3.2 Các trạng thái giao diện 11
4 Các trạng thái OSPF 14
4.1Các loại gói OSPF 14
4.2 Cấu trúc các gói tin 15
4.2.1 Hello 15
4.2.2 OSPF DBD Packets 18
4.2.3 OSPF LSR Packets 18
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4.2.4 OSPF LSU Packets 19
4.2.5 OSPF LSAck Packets 19
5 HOẠT ĐỘNG CỦA OSPF 20
Bước 1: Thiết lập mối quan hệ gần kề (Adjacency )
20
Bước 2. Bầu DR và BDR 23
Bước 3. Khám phá tuyến
26
Bước 4. Chọn tuyến tối ưu 27
Bước 5.Duy trì thông tin định tuyến
28
6. Bảng định tuyến
29
7. Các loại đường 29
8. Tra bảng định tuyến 30
9. Ứng dụng của OSPF 31
9.1Ứng dụng OSPF trong mạng phân cấp 31
9.2 OSPF với việc cân bằng tải 32
Kết luận 34
Tài liệu tham khảo 35
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2. Các thuật ngữ trong OSPF
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18 |
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4.2.2 OSPF BDB Packet
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19 |
4.2.3 OSPF LSR Packet
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4.2.4 OSPF LSU Packet
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4.2.5 OSPF LSAck Packet
20 |
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5-HOẠT ĐỘNG CỦA OSPF
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2. _,U21,Uq_r
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4. :^4
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Bước 1: Thiết lập mối quan hệ gần kề (Adjacency )
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3. $+$'%&093"q9%orQ
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22 |
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Bước 2. Bầu DR và BDR
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