[poohead]( “stuff@stuff.com”) - Sep 5, 2013 Great post! Like all SolarWinds products, the Netflow Analyzer is subpar at best. It has major scalability and performance problems (most likely due to to way it uses its SQL database) that make it unusable for actual troubleshooting. And no matter how many new widgets and features they add to their interface, the graphs are still unreadable. I am of the opinion that any network reporting tool that doesn’t use the RRD/MRTG-style graphs is almost worthless.

One of the things that I’ve always lamented about using non-Cisco hardware is the lack of true 1:1 netflow support. Say what you will about jflow, cflow, sflow….there is no substitute for netflow, with sflow being the exception to that since it is a protocol that inherently supports ipv6 and can transport far more than simple network information if configured in certain ways on certain devices. On newer MX series Juniper routers the game has changed.

[waqar]( “warint06@gmail.com”) - Oct 6, 2013 did unmounting and mounting /var partition gives any outages ? Nick Buraglio - Oct 6, 2013 No, we saw no interruption.

Working on some MX series routers recently I encountered a problem I’d never seen before, essentially preventing the configuration from being committed:``` buraglio@rtr# commit check re0: error: could not open configuration database (juniper.data+) buraglio@rtr>start shell From there I wanted to see the file system and check out the stats of what it thinks we have.``` buraglio@rtr% df -h Filesystem Size Used Avail Capacity Mounted on /dev/ad0s1a 3.5G 313M 2.9G 10% / devfs 1.

[Engineer Z]( “zawada@ieee.org”) - Aug 1, 2013 I agree fully. As you may recall Nick, for a long time I’ve said “NAT is a turd” and “Carrier-grade NAT is a polished turd.” At least at first glance “Enhanced IP” looks like more turd polishing to me. How do we break folks’ habit of working around the shortcomings of NAT and show the value of truly global address space? Why do folks keep hacking on the NAT kludge?

I have been learning and using IPv6 for a quite a while, even before I worked in research and education, back in the ISP days. I thought I should learn it because, frankly, I figured we’d all be converted to it by now, already whole hog using it like it was the layer 3 addressing mechanism that it is. Flashback: My first IPv6 access was via a tunnel to HE a long, long time ago and before that I was reading what I could about it.

Depenetration, whuaat? | JRLZN - Sep 4, 2013 […] Photo Credit: http://www.forwardingplane.net/2013/07/building-a-secured-network-in-a-box/ […] [Aaron]( “Iamenabled@hotmail.com”) - Jul 5, 2013 Nick, can you share the server hardware you are using for your VMware host? Nick Buraglio - Jul 5, 2013 For this case it’s an older Dell PowerEdge 2900 with 16G RAM, 4 x 1G NIC and 8x2.3Ghz cores Nick Buraglio - Jul 0, 2013 On a reliability note, uptime has been fantastic Nick Buraglio - Jul 0, 2013

In many environments, the move to virtualization is a path well traveled. My home and lab networks are no exception to this and I’m sure nearly everyone who reads these pages has at least been exposed to it in one way or another. I have played with nearly all of the virtualization platforms and am firmly in the camp that there will be a large segment of networking that will move to a virtualized platform especially in the data center and campus segments.

Technology Short Take #34 - blog.scottlowe.org - The weblog of an IT pro specializing in virtualization, storage, and servers - Jul 1, 2013 […] Nick Buraglio provides some quick-and-dirty instructions for building FlowVisor on CentOS 6. […] Technology Short Take #34 | Strategic HR - Jul 6, 2013 […] Nick Buraglio provides some quick-and-dirty instructions for building FlowVisor on CentOS 6. […] # - Aug 4, 2013 At the end of the nail with your hammer to avoid splitting the wood when you drive the nail.

I had the need to build a FlowVisor instance under CentOS. Since nearly all of the docs I could find were for debian, I threw this together. I utilized this GENI doc and the github docs as a simple reference. This is the quick and dirty method I used: Install the prerequisites:``` sudo yum -y install ant eclipse java-1.6.0-openjdk.x86_64 git sudo yum -y groupinstall “Development Tools” mkdir /services cd /services git clone git://github.