Playlist · Keith Barker - The OG of IT
Archive: OSPF, Open Shortest Path First
Total watch time
1h 15m
at 1× speed · exactly 1 hour, 14 minutes, 51 seconds at 1×
The shape of the course
Each column is one video, to scale
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Videos (4)
1h 15m in total · tick what you've watched
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| Watched | Leave out of the total | ||||
|---|---|---|---|---|---|
| 1 | OSPF LSA Types for IPv4 | 23:57 | 2011-11-08 | ||
| 2 | OSPF Load Balancing and Tweaking | 16:24 | 2011-06-16 | ||
| 3 | IPv6-06 IPv6 Dynamic Routing Protocols | 17:01 | 2011-10-06 | ||
| 4 | OSPF Troubleshooting with Cisco IOS | 17:29 | 2011-03-07 |
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[](https://playlistduration.com/playlist/PLC6197249373E47E9)<a href="https://playlistduration.com/playlist/PLC6197249373E47E9"><img src="https://playlistduration.com/badge/playlist/PLC6197249373E47E9.svg" alt="Watch time: 1h 15m · 4 videos" width="196" height="20"></a>Add ?speed=1.5 to the image URL for the time at that speed, ?label=Course to change the left text, or ?style=flat-square for square corners.
Want the numbers themselves? GET https://playlistduration.com/api/v1/playlist/PLC6197249373E47E9 returns them as JSON — free, no key. API docs →
Data from the YouTube Data API as of 2026-11-06 (cached). Private or deleted videos are excluded from totals.