Recent Posts - page 18
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IPv6 Networking Detection Case #141 – Parts 1 & 2 Published
Join me in a fun IPv6 network detection case! In the first I will lay out the first series of facts and clues. We will isolate to the “suspect” router and then in part… Read More ›
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IPv6 Solicited Node Multicast
Solicited Node Multicast can be quite confusing at first. Hope this Network Computing 3 part blog series I’m doing helps make it a little clearer. The first two in this three part series on Solicited-Node Multicast are already published…. Read More ›
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What’s at the “Top” of Your Ladder?
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Introducing the Multicast “Dating Service” (aka the “RP”), Part 1
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Are you a Black Hole or Prism?
Once upon a time there was a young woman named Denise. She was just out of college, employed, and trying to figure her way around “corporate America” She zoned in on two men. We shall call them Ronnie (her team lead)… Read More ›
Featured Categories
Network Detective ›
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Why IT-Site1 Can’t Ping OT_Site1R – Show and Tell Time #1
September 9, 2025
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Troubleshooting OT Security: Why IT-Site1 Can’t Ping OT_Site1R
August 27, 2025
BGP ›
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BGP Graceful Restart on the Cisco FTD: Part 2 – Seeing it “In Action”
May 17, 2022
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BGP Graceful Restart on the Cisco FTD: Part 1 – Configuring
May 17, 2022
Multicast ›
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mVPN Fun in the Lab: Troubleshooting the MVPN Cloud – Part 6 of 6
March 29, 2019
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Network Detective Ride-Along: Troubleshooting Multicast
May 27, 2018
IPv6 ›
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Understanding IPv6: Solicited-Node Multicast In Action (Part 7 of 7)
February 22, 2018
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Understanding IPv6: The Ping Before Solicited-Node Multicast (Part 6 of 7)
February 22, 2018
MPLS ›
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Troubleshooting Basic MPLS L3VPN – Part 2 – MPLS
February 23, 2021
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Troubleshooting Basic MPLS L3VPN – Part 1 – BGP
February 23, 2021

