Recent Posts - page 15
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vBrownBag: Techniques of a Network Detective
An essential part of running any network is being able to quickly diagnose and resolve service impacting events. But how does one do that in the world of IT where the only thing constant about technology is the constant change?… Read More ›
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vBrownBag: Troubleshooting Multicast High Level
For “basic” multicast I have always found that >70% of the problems I troubleshoot end up being the same things over and over and over again. Missing “trigger” to “pull” the multicast down to the receiver Multicast Distribution Tree (MDT)… Read More ›
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The Cure for Network Downtime is Not Just Technology
Design and tune your network all you want. But if your company doesn’t also have a culture of high availability, your High Availability and Fast Convergence is not complete. **This blog is a formatting cleanup and update to a previous… Read More ›
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Clearing Up Some Misinformation RE: eBGP Multihop and TTL
Myth: You have to set ttl to 2 because it is decremented on the way to the loopback. Years and years ago I was trying to learn more about BGP and I was reading some book with a chapter on… Read More ›
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Pop Up Tech Talks: Denise Fishburne
Earlier today I saw a tweet that @PopUpTechTalks had uploaded their interview of me up to their YouTube Channel. I was super stoked! 🙂 Just had to share it with y’all! SolidFire’s Amy Lewis speaks with Cisco’s Denise Fishburne aka… Read More ›
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IWAN: Why EIGRP or BGP Over the DMVPN Tunnel?
IWAN (Intelligent Wide Area Network) and Why EIGRP or BGP over the DMVPN Tunnel. In this YouTube “playing in the lab” IWAN fun we are going to drill down between 2 sites – Branch 3 and the Hub site. Branch… Read More ›
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Glass Half Empty or Half Full?
Featured Categories
Network Detective ›
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Tips from a Network Detective
April 12, 2021
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Troubleshooting Basic MPLS L3VPN – Part 2 – MPLS
February 23, 2021
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 1 – BGP
February 23, 2021
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The “Case of the Broken MPLS L3VPN” – Time to Troubleshoot!
April 11, 2019