This blog helps you understanding and grasping IPv6 Header Details. IPv6 is the replacement Internet protocol for IPv4. It corrects some of the deficiencies of IPv4 and simplifies the way that addresses are configured and how they are handled by Internet hosts. IPv4 has proven to be robust, easily implemented, and interoperable, and has stood […]
HomeINTERVIEW QUESTIONSBGP INTERVIEW QUESTIONS Explain Split-Horizon, Synchronization rules. Which 2 new attributes are seen when we enable summarization in BGP? Why BGP specifically chooses neighbor method for creating sessions and why not the sessions are allowed to be configured dynamically as happen in IGPs(say EIGRP and OSPF). Two peers for […]
RIP does not have any way of reliability therefore the updates are sent periodically. RIP can also configured for generating triggered updates, however this is not discussed in this article. RIP uses 4 timers in order to manage the advertisement of updates. RIP Update Timer It is the time between each update interval. By default […]
Hot Standy Router Protocol or HSRP is similar to Virtual Router Redundancy Protocol (VRRP) or Gateway Load Balancing Protocol (GLBP) and is used to build a virtual gateway for LAN hosts for redundancy purpose. Before discussing How HSRP works and what are its features, it is important to understand the need of gateway redundancy. R1#sh […]
The routing process in JunOS assigns an administrative distance (or default preference) to each route that the routing table receives. The default value depends on the source of the route. The preference value is a value from 0 through 4294967295 (232 – 1), with a lower value indicating a more preferred route. Below is chart of AD […]
Segment Routing (SR) is a new label switching technology that will evolve and enhance the working of IP and MPLS networks. Segment Routing (SR) uses a new and efficient way of routing which is more flexible and scalable compared to legacy MPLS technology. In Segment Routing, the labels are not generated by Label Distribution Protocol […]
Are you not seeing any output or neighbors under “Show ip ospf neighbors” command? In blog guides you in Troubleshooting OSPF Adjacency Issues – Part 1. Have you enabled OSPF for the concerned interface/link? Either using “Network 10.10.12.0 0.0.0.255 area 0” command under the OSPF router process or by using an interface-level command “ip ospf […]
IP SLA is an active method of monitoring and reliably reporting on network performance. By “active,” I refer to the fact that IP SLA will generate and actively monitor traffic continuously across the network. An IP SLA Router is capable of generating traffic and reporting on it in real time. IP SLA can be configured […]
Seed metric has an important role to play during the route redistribution. In this article we will have an idea of Route Redistribution Seed Metrics for various routing protocols. When a router performs the route redistribution, it must assign a metric to the redistributed routes. Redistributed routes are learned from routing protocols and not physically […]
Before we understand WHAT IS OPENSTACK?, let us have a brief idea of the Cloud computing. Cloud computing It is a computing model, where resources such as computing power, storage, network and software are abstracted and provided as services on the Internet in a remotely accessible fashion. On-demand availability, ease of provisioning, dynamic and virtually […]
Route Redistribution BGP Redistribute Internal BGP Redistribute Internal: There is a slight difference in Route Redistribution from BGP to an IGP compared to route re… READ MORE » Route Redistribution Route Redistribution in ISIS Route Redistribution in ISIS: In general, Route Redistribution is a technique using which the boundary routers connecti… READ MORE » Segment […]
VNF What is SD-WAN? How it works? To understand the concept of What is SD-WAN and How it works?, Let us create a base first with an example. AIM … READ MORE » uCPE What is uCPE? uCPE (Universal Customer Premise Equipment) is one single device capable of handling multiple network functions. For example, Routing… […]
Showing posts with the label Process SwitchingShow All Process Switching Process Switching Vs Fast Switching Vs CEF In this article, we will discuss evolving packet-switching methods for example Process Switching, Fast Swi… READ MORE »
Showing posts with the label Load-BalancingShow All Load-Balancing How Load Balancing Works? What will we learn in this article? How Load Balancing Works on a Cisco router when CEF is disabled. How Load Balancing Wor… READ MORE »