Ahh the Christmas break. The perfect time for good food, enjoying the company of family and friends and of course…. IT projects at home! My project last year was to immerse myself in the source code for OpenBSD's snmp daemon so that I could integrate my patch-set for Net-SNMP directly into the native OpenBSD daemon. That was time well spent as I was able to integrate my code in the following weeks. This year I have maintenance to do in the home lab. It looks like 2013 is going to be a busy year as far as getting my hands on new stuff so I want the lab ready to rock.
First project: upgrade my VMware ESXi server from 4.1 to 5.1.
How does the internet work - We know what is networking
PNRP name resolution protocol uses this two steps: Endpoint determination – In this step the peer is determining the IPv6 address of the computer network card on which the PNRP ID service is published. PNRP ID resolution – After locating and testing the reachability of the peer with the PNRP ID with desired PNRP service, […]
How does the internet work - We know what is networking
PNRP – The Peer Name Resolution Protocol is new protocol made by Microsoft which is one of the first technology that will change the way we think about naming resolution in computer networking and possibly be the next DNS – Domain Name System like technology. PNRP is the new DNS but there are so much […]
This is my first quiz and I chose an MSTP misconfiguration scenario that could be easily overlooked on the first encounter.
A fiber got cut revealed some hidden MSTP implementation problems. It was enough for one link to go down and the connectivity got impacted in a network that was supposed to be redundant. Read along and try to spot the problem.
$ ./bgpdgen.pl -c 5 -n 10.0.0.0/8 -m 24
network 10.160.244.0/24
network 10.61.69.0/24
network 10.13.1.0/24
network 10.13.138.0/24
network 10.50.109.0/24
$ ./bgpdgen.pl -c 5 -n 10.0.0.0/24 -m 26-30
network 10.0.0.224/28
network 10.0.0.112/28
network 10.0.0.0/26
network 10.0.0.80/28
network 10.0.0.24/29
Do you ever find yourself in a conversation with someone where you attempt to explain a concept in detail and you realize that you don't know that concept at the level of detail that you thought you did? That happened to me recently. I thought I had a better handle on TRILL and FabricPath than I really did. Since I retain things far better when I write them down, I'm going to blog the differences between TRILL and FabricPath when it comes to address learning and what role the control plane plays in building the network topology
Serverfarms allow probes to be associated with them when configured.
Any rserver in the serverfarm configuration will inherit probes from the serverfarm config.
Default probe behaviour is to use OR logic. A single probe failure will cause the rserver to be marked as down.
AND logic for probes can be applied using the fail-on-all command. This means all probes must fail for the serverfarm to be marked as down.
How does the internet work - We know what is networking
Next project was one of my first networking Science articles. It is a short look at latest achievements from some of the biggest networking scientists today with some short comments from my mentor and me. The work was presented at 19. International scientific conference of International Federation of Communication Associations. International scientific conference “DIT 2012″ accepts […]
How does the internet work - We know what is networking
If you work in networking sooner or later there will be a situation where someone will bring you a device that you must connect to your network that was used somewhere else before. That can be something like switch, Fiber channel switch, some security appliance, different controllers etc. In that case this device will often […]