There are various compelling designs & architectures defined for SDN. This may include single vendor or multi vendor designs. Majorly, whatever design a service provider may implement in its network, SDN technology centralizes the control of the network by separating the control plane and data plane for a particular networking device. To understand how SDN […]
A network enthusiast with vast experience in Enterprise and Service Provider domains. I have created this blog to share my knowledge and expertise to help the network aspirants. I can be contacted by writing to me at [email protected] for any of your queries. I also deliver coaching for CCIE (R&S and SP), CCNP, CCNA courses. […]
HomeISISISIS INTERVIEW QUESTIONS What is attach-bit in ISIS? Explain the format of an NSAP address. What are CNSP packets? CSNP packets are similar to which packet type in OSPF? What are PSNP packets? For what two purposes PSNP packets are forwarded? Can L1 router form an adjacency with an L2 […]
Don’t forget our ultimate aim of connecting a branch office to the head office or data center. Using SD-WAN the resources we would require. A commodity HW based dedicated device, that will be running as a router, switch, Firewall, Load balancer, Traffic optimizer on a single Hardware (x86 server) also called uCPE (universal Customer Premise […]
Segment Routing (SR) allows for a flexible definition of end-to-end paths within IGP topologies by encoding paths as sequences of topological sub-paths called as Segments. These segments are advertised by the link-state routing protocols (IS-IS and OSPF). Prefix segments represent an ECMP-aware shortest path to a prefix (or a node), as per the state of […]
Gateway Load Balancing Protocol or GLBP is similar to HSRP and is used on Cisco devices to build a virtual gateway for LAN hosts for the gateway redundancy. The main difference between GLBP and HSRP is that GLBP also provides load balancing feature by default but HSRP needs some config tricks for load balancing the […]
Showing posts with the label Route SummarizationShow All Route Summarization RIP Route Summarization RIP Route Summarization: Route summarization or route aggregation is a technique using which we create one summary route th… READ MORE »
Basic Route Selection Criteria Administrative Distance JunOS The routing process in JunOS assigns an administrative distance (or default preference) to each route that the routing … READ MORE » Basic Route Selection Criteria Administrative Distance of IP Routing Protocols – Cisco Administrative Distance (AD) is an 8 bit value/number (Cisco) that defines trustworthiness of… READ […]
Segment Routing OSPF Extensions for Segment Routing Segment Routing (SR) allows a flexible definition of end-to-end paths within IGP topologies by encoding paths as … READ MORE » Segment Routing IS-IS Extensions for Segment Routing Segment Routing (SR) allows for a flexible definition of end-to-end paths within IGP topologies by encoding pa… READ MORE […]
Troubleshooting Troubleshooting RIP Troubleshooting RIP: Below are the potential causes that may affect RIP (Routing Information Protocol) routing. Network sta… READ MORE » Troubleshooting Troubleshooting OSPF Adjacency Issues – Part 2 Are you not seeing any output or neighbors under “Show ip ospf neighbors” command? Thi… READ MORE » Troubleshooting Troubleshooting OSPF Adjacency Problems […]
DNS How to Configure Router as DNS Server Domain Name System (DNS) is used to resolve website names (or host-names) example www.testdomain.com into IP… READ MORE » DNS How DNS Works? Domain Name System (DNS) is used to resolve website names (or host-names) example www.testdomain.com into IP addresses 90.1.1.1. Th… READ MORE »
Route Filtering FILTERING TYPE 5 LSA IN OSPF There are various methods of Filtering Type 5 LSA in OSPF that we are going to discuss below in this article . On ASBR… READ MORE » Route Filtering FILTERING TYPE 1 LSA1 in OSPF This blog explains various ways of FILTERING TYPE 1 LSA1 in […]