OSPF overview
- OSPF ( open shortest path
first ) is deverlop by IEEE
- Dạng link-state protocol , sử
dụng thuật toán Dijkstra's SPF để tìm tuyến đường ngắn nhất
- OSPF features
include:
- Supports VLSM
- Efficient use of
bandwidth - Routing changes trigger
routing updates (no periodic updates)
- Supports large
network size
- Routing based on
best path selection
- Grouping of
members into Areas
- Support
authentication
- Equal-load
balancing
- Using route tag
for track external routes.
- OSPF sử dung TCP , port
numbber 89
- OSPF multicast packet use a
TTL of 1.
- OSPF sees secondary networks
as stub network. This mean no adjacencies will be establish using
secondary network.
- https://www.ietf.org/rfc/rfc2328.txt
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