[fancy_header3 variation=”orange”]Open vSwitch GRE Tunnel Configuration[/fancy_header3] [colored_box title=”Open vSwitch Updated Tutorial” variation=”silver”]-I updated this September 20, 2012. Also adding this PDF from a instruction I did over the summer at an Internet2 conference. Download the lab here OpenFlow and Open vSwitch GRE Tunnel Configuration Tutorial. -Another lab building from source with video and pretty vetted is … Continue reading Open vSwitch GRE Tunnel Configuration
Installing and Configuring OpenvSwitch on Ubuntu 12.04 (Precise Pangolin)
[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)
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
Use case for MPLS in the Enterprise for PCI Compliance
[fancy_header3 variation=”orange”] Use case for MPLS in the Enterprise for PCI Compliance[/fancy_header3] MPLS is today’s only form of scalable network virtualization we have for now. I personally think the promise of something called SDN will move into that space soon but until then, we need network virtualization. PCI is a joke. It is a racket… Continue reading Use case for MPLS in the Enterprise for PCI Compliance
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
How I Learned to Hate the DCI
How I Learned to Hate the DCI: Layer 2 data center interconnects (DCI) is still alive and well. I blame VMware with vMotion and now every other Hypervisor vendor on the planet. Live workload migration is certainly vital to most operations. The further up the stack that happens the more flexibility you have with choosing more layers beneath… Continue reading How I Learned to Hate the DCI