OSPF Wildcard Mask Shortcut | Cisco CCNA 200-301
This is a shortcut that can help with calculating the OSPF wildcard mask. For more videos on subnetting, check out my full “Subnet Saturday” playlist here on YouTube.
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Hi , great videos, but could you tell me what order I should be watching your OSPF titles, as I'm following the CCNA titles in order, but in a couple, you are talking about subjects that I haven't covered yet.
Hey Keith , great work , I'm swatting ( UK) for CCNA and your videos are a great help. I saw Jeremy was asking for the wildcard mask with just the IP address in one of his quizzes, also the wildcard mask for multiple addresses in same network. Any pointers?
Hello Keith I really like your style of teaching and your demeanor. Keep up the good/excellent work you do.
This man is an invaluable resource to the networking community and should be honored and protected by the internet almost as much as Brendan Fraser.
Hi Keith, nice sharing. Could you show me how step by step tutorial of g.8032 ethernet ring protection on cisco switch/router devices ? Thanks in advancve
I finally got my CCNA I am soo happy! I love your videos, Keith!
Thank You Mr Keith
Many thanks Keith ✊
Where's the link to the video about the block size?
A quick way to get the block size is subtract the subnet size from the next available octet and then use ^2:
E.g. /28 …
32-28=4 …
2^4= Blocksize 16
Excellent video, thanks