Topology used Multiple Contexts configuration First, the firewall has to be configured as Transparent and multi-context with the commands firewall transparent and mode multiple. This last command will ask a reboot in order to complete. After the reboot, by default … Continue reading
Summary Address Blocks With IPv4 To summarize a block of IP ranges, the subnets must consist in multiple sequential number in one of the octets. The block must be X number in a row, where X is a power of … Continue reading
EBGP EBGP is used when routing needs to be done between two different BGP AS. When using Cisco IOS, the basic configuration of BGP is done from the router bgp AS_Number command and then through some neighbor/network statements. In JUNOS … Continue reading
Technology Overview AToM stands for Any Transport Over MPLS. The goal behind this is to be able to transport any Layer 2 protocol over an MPLS Core. AToM is able to transport the following protocols over MPLS : Ethernet (EoMPLS), … Continue reading
Metro Ethernet LAN Services Overview Multiple services can be implemented and offered by ISPs for the MAN connectivity. Services can be Layer 1 to Layer 3 based and operates as P2P or P2M. The following pictures resumes the deployment options … Continue reading
Overview of DC design Core layer : high speed packet switching for flow going in and out of the DC Aggregation layer: Service and module integration, layer 2 domain definition, STP processing, FHRP and other critical functions Access layer: … Continue reading
vPC Overview vPC stands for Virtual Port-Channel. This features allows the creation of a cluster of Nexus so that devices connecting to it only see one device. There is no blocked port between vPC and the devices attaching to it … Continue reading
Overview FabricPatch is designed to resolve the shortcomings of the traditional Layer 2 design. Today, Datacenters need to find a compromise between the flexibility offered by layer 2 technologies and scalability offered by layer 3 technologies. Typically Layer 2 is … Continue reading
Concepts and usage To understand the concept behind PVLANs, the concept of regular VLANs need to be understood. VLANs are a simple way to create different Ethernet segments on the top on one unique physical infrastructure. The main goal was … Continue reading