John Herbert
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Secret Sunday – Jason Edelman
That handsome visage is owned by Jason Edelman, the subject of today’s Secret Sunday. I’ve met Jason a few times through some Tech Field Day events like Networking Field Day, and most recently, at Tech Field Day Extra at Interop NYC 2014, … Continue reading
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Show Me The Route: FWSM Grumbles
Time for a quick rant. It’s possible that I am forgetting some trick I learned in the past (in which case I’m sure somebody can help me out in the comments), but why, on a Cisco Firewall Services Module (FWSM), … Continue reading
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The A10 Health Monitor You Didn’t Know About
If you’re used to configuring f5 LTM load balancers, you’re probably used to the idea that you normally set two health checks for each VIP you have. The first is at the node level, often just an ICMP ping, which … Continue reading
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A10 – That Global Health Monitor Warning
In a previous post I whined that the A10 load balancers by default only need to see a single successful health check from a service in order to mark it as up. I argued that that’s not a good idea, … Continue reading
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A10 Service Failure Recovery
A quick post today, about how the A10 load balancer handles the recovery of a server based on health checks. Kind of a warning actually. A10 Health Monitor Configuration In order to determine when a service should be considered “up” … Continue reading
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Secrets Behind A10 Health Monitors
Whether you use A10, f5 or some other load balancer, you’re probably used to the idea of health monitors, or “health checks”. The load balancer periodically performs some kind of connectivity test to the servers that are used to service … Continue reading
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Getting Started With Ansible
Finally this week I got myself in gear and decided it was time to have a play with Ansible. I found an installation guide on the Ansible documentation site and tried to follow it. Here follows the fun I had; … Continue reading
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Secret Sunday – Mike Bushong
This Secret Sunday post is definitely overdue; today’s geek on the block is Plexxi’s Michael Bushong. I believe I met Mike back at Networking Field Day 5 when Plexxi presented to us. Putting aside that we were suitably impressed with Plexxi’s product … Continue reading
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Safari Favorites Bar – Life In Monochrome
Ok, this is a stupid thing and I know I’m not the first to think it. Apple, by any chance could you please allow us to color the entries on the Favorites bar? I’d also like to request that we … Continue reading
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Congratulations on the Birth of SocketPlane!
I wanted to take a quick moment to offer up my congratulations, and share the news about SocketPlane. Their press release announcing that they had received investment from LightSpeed Venture Partners says: SAN FRANCISCO, October 15, 2014 – Today SocketPlane, an … Continue reading
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30 Blogs In 30 Days: Insanity?
So apparently, over at EtherealMind, that Greg Ferro chap is going slightly insane and has challenged himself and others to a “30 Blogs in 30 Days” challenge. Because I like Greg, I’m not going to make a big deal about … Continue reading
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HP Talks SDN Turkey at Interop
Last Wednesday I had the pleasure of meeting with Chris Young and Jeff Enters from HP Networking as part of Tech Field Day Extra! at Interop NYC 2014. Going into the discussion I had expected to get a presentation on … Continue reading
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Who Uses the 55:4e:20 MAC OUI?
I set up a new secondary ISC DHCP server yesterday, as an interim solution while I get round to fixing a dead server. The easiest short term fix was to spin up a VM and install DHCP there. As I … Continue reading
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Proposed Junos XML Enhancements
I was looking at some Ethernet interface statistics last week when I realized I couldn’t find the output that confirmed the results of Ethernet Autonegotiation, just that autonegotiation had been enabled: john@noisy> show interfaces ge-0/0/0 Physical interface: ge-0/0/0, Enabled, Physical link … Continue reading
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Apple Working Hard to Improve Siri?
That’s right, in the face of strong competition from “Google Now” (home of “Ok Google”) and Microsoft’s Cortana, Apple’s software developers are working hard to add features and improve Siri’s capabilities and responses. After all, with Microsoft running commercials recently where Cortana … Continue reading
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Secret Sunday – Mr Ethan C Banks
This week’s Secret Sunday post is a pointer to a fairly well known blogger, Ethan Banks. Yes, he’s well known for co-hosting the popular Packet Pushers podcast and he is an all round good guy, but his blog – especially of … Continue reading
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Vagrant vs Docker on OSX – Tales From The Front
Earlier this week I described how I had dipped my toe in the waters of Docker and determined in the end that while the solution was pretty neat, it smacked of being too much solution for the problem at hand. … Continue reading
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Running Docker on OSX and Other Fun Things
I have a friend who wants to test a tool I wrote in perl (yes yes, I know) but it seemed to me that it was going to be a big pain for him to have to install all the … Continue reading
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Network Monitoring Videos from NFD8
In yesterday’s post (Network Monitoring – So Many Choices), I neglected to link to the videos from Networking Field Day 8 covering the network monitoring portions of the presentations from Gigamon, Pluribus and Big Switch. So rather than go back … Continue reading
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Network Monitoring – So Many Choices!
I’ve had network monitoring systems on my mind recently as we’ve been looking to determine the right specification for a number of fiber taps and aggregation devices so that we can fulfill the needs of both the security teams (for … Continue reading
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