[fancy_header3 variation=”orange”]Installing and Configuring OpenvSwitch on Ubuntu 12.04 (Precise Pangolin)[/fancy_header3] [titled_box title=”Updates” variation=”steelblue”] For installing OpenvSwitch on Ubuntu from package head to OpenvSwitch Configure from Packages and Attaching to a Floodlight OpenFlow Controller To install Open vSwitch from source head to Configuring VXLan and GRE tunnels on OpenvSwitch Or use this Python App I wrote… Continue reading Installing and Configuring OpenvSwitch on Ubuntu 12.04 (Precise Pangolin)
Tag: Tutorials
Juniper Default Routing Tables
[fancy_header3 variation=”orange”] Juniper Default Routing Tables [/fancy_header3] The first time I saw these I remember thinking what is going on here. It can be pretty foreign the first time someone sees it especially coming from Cisco IOS. The two CLIs wrap and abstract the underlying standardized frameworks pretty differently. I think it helps to decouple… Continue reading Juniper Default Routing Tables
Juniper and Cisco Comparisons of RIB, LIB, FIB and LFIB Tables
[fancy_header3 variation=”slategrey”]Juniper and Cisco Comparisons of RIB, LIB, FIB and LFIB Tables[/fancy_header3] A quick overview before we start: [fancy_list style=”circle_arrow” variation=”slategrey”] RIBs maintain the network topologies and routing tables for each protocol. This would include many routes going to the same destination prefix. FIBs are the best route from the possibly many protocols in the… Continue reading Juniper and Cisco Comparisons of RIB, LIB, FIB and LFIB Tables
Basic MPLS/VPN with Cisco IOS
[fancy_header3 variation=”steelblue”]Basic MPLS/VPN with Cisco IOS[/fancy_header3] This is a quick tutorial for basic MPLS/VPN with Cisco IOS configuration. The tutorial exemplifies basic PE to P to PE configuration on three Cisco 7200s running in GNS3 with IOS. R2 is configured as a route reflector P node and R4, R6 and R3 are PE node route reflector… Continue reading Basic MPLS/VPN with Cisco IOS
How Headers Encapsulate in the OSI stack
[fancy_header3 variation=”slategrey”]How Headers Encapsulate in the OSI stack[/fancy_header3] How Headers Encapsulate in the OSI stack: Part 2 of some refreshers. We send application data or payload by encapsulating or framing each layer within the previous layer. We looked at each one individually and now here is how they look when each layer is wrapped inside the… Continue reading How Headers Encapsulate in the OSI stack
What are Ethernet, IP and TCP Headers in Wireshark Captures
[fancy_header3 variation=”orange”]What are Ethernet, IP and TCP Headers in Wireshark Captures[/fancy_header3] If I could go back in time when I was a n00b kid wanting to go from zero to a million in networking, the one thing I would change would be spending about 6 months on the fundamentals of networking headers and framing before… Continue reading What are Ethernet, IP and TCP Headers in Wireshark Captures
Why the NOS will decouple
Over the next couple of years some of us expect the networking industry to have some fairly significant changes. There are really two options: A distributed approach we have today or a controller based centralized model. We have today just that, autonomous devices building adjacencies to one another, exchanging what it hopes are the best healthy paths… Continue reading Why the NOS will decouple
OpenVswitch and GRE tunnel notes
Here is a quick post for setting up GRE tunnels on OpenVswitch. Both Vswitch boxes are attached to an OpenFlow Beacon controller. More up to date how-to can be found here: Configuring VXLan and GRE tunnels on OpenvSwitch KVM live storage migration makes an interesting story and run at VMware tools. The dreaded layer2 data… Continue reading OpenVswitch and GRE tunnel notes