Recent Posts - page 8
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Oh What a Tangled Web We Weave……
I’d like to share something with you. Something I learned (the hard way) in my life. Beware the tangled web you weave. There is a price to pay. I didn’t see this when I was in my 20s and 30s. … Read More ›
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Networking with Fish Update: Site Refresh
Four 1/2 years ago Networking with Fish as a web site was born. To say I knew nothing about having a web site would be a massive understatement. All I knew was I needed to “give back“. I needed to… Read More ›
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2019: Taking One Day at a Time
I was asked the other day what my New Year’s Resolutions for 2019 were. The truth is I don’t actually have any. I haven’t, in my life, been the best at “using New Year’s Resolutions” in the “healthiest of ways“. What do I mean by that? Well for example, one… Read More ›
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Verify Your Segmentation is Working with Stealthwatch
Network segmentation…. air gap segmentation… the names go on and on. But no matter what you call it, you designed it and deployed it for a reason. Likely a very good reason. Potentially even a reason with fines and consequences… Read More ›
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Find Rogue DNS Servers in your Network with Stealthwatch
Rogue DNS kinda reminds of me of a crime scene show I saw once. The killer was hijacking the GPS mapping system in the rental cars of their victims. Imagine that who you think is your valid DNS server actually… Read More ›
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The Case of the Missing LDP Neighbor
R1 and R2 are cabled up twice to each other via their gig0/0/1 interfaces and their gig0/0/7 interfaces. Each connection is in its own subnet, and each interface configured for OSPF and MPLS. But while we have 2 OSPF neighbors… Read More ›
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Knowledge of the “Truths in Your Network” is KEY
I am a huge believer in “knowledge is key”. Yeah… I know… just reading that statement you are probably saying “well yeah… duh”. Of course knowledge is key… duh, Fish! We know that! We love knowledge. We are knowledge seekers… Read More ›
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