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🚫 Оригинал видео:
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📃 Оригинальное описание:
The Designated Router (DR) and Backup Designated Router (BDR) exist to reduce redundant LSA flooding on an OSPF multi access link. Routers on a multi access link use the and Multicast IP Addresses to efficiently share LSAs with each other.
In this video we explore the process by which a DR and BDR are elected. We discuss the WAIT interval in OSPF, we discuss Preemption and Priority numbers. We wrap up the video by showing you the sequence of events that occurs when a routing update needs to be sent on a link with a Designated Router and Backup Designated Router.
This is Lesson 6 of the Practical OSPF series:
- Intro
- DR BDR - Review
- Electing Process: DR, BDR, and Drothers
- Neighbor Adjacency Process - Full or 2-WAY
- DR / BDR / Priority are Per-Interface, not Per-Router
- Deterministic Designated Router by setting Priority
- Routing Updates from DR, BDR, and Drothers - -
- Packet Capture of OSPF DR BDR Election Process and Routing Updates
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📜 More free CCNA resources:
Packet Capture:
#ospf #ccna #neighbors
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