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 […]
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 OSPF Route Redistribution in OSPF: Redistribution is a technique using which the boundary routers connecting different rou… READ MORE » Segment Routing […]
Basic Route Selection Criteria Basic IP Routing Rules When we try to connect to a remote subnet/prefix from a router (for example, Ping, Telnet, or FTP), following basic routing ru… READ MORE » Basic Route Selection Criteria Administrative Distance JunOS The routing process in JunOS assigns an administrative distance (or default preference) to each route […]
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 » Route […]
EIGRP EIGRP Tables Three EIGRP Tables are maintained by EIGRP to execute its operation i.e. Neighbor Table , Topology Table , and IP Routing table for i… READ MORE » EIGRP EIGRP Packet Format In this article we are going to discuss EIGRP Packet Format in detail. Enhanced Interior Gateway Routing Protocol ( EIGRP ) […]
BGP BGP Messages BGP exchanges 4 different messages. These message are exchanged by BGP Peers to establish a connection, exchange network prefixes, maint… READ MORE » BGP BGP Best Path Selection Criteria BGP Best Path Selection Criteria is mechanism in BGP that helps finding the best path to a destination network. Whil… READ MORE » […]
In this article, we will discuss evolving packet-switching methods for example Process Switching, Fast Switching and Cisco Proprietary Cisco Express Forwarding (CEF) Packet Switching is the method of moving a packet from a router’s input interface to an output interface. When Cisco routers were first developed and deployed, only one way existed to switch the […]
What will we learn in this article? How Load Balancing Works on a Cisco router when CEF is disabled. How Load Balancing Works on a Cisco router when CEF is enabled. How the load is distributed among various equal cost path interfaces of a router. So, let’s continue.. Load balancing is a standard functionality of […]
Segment Routing (SR) allows a flexible definition of end-to-end paths within IGP topologies by encoding paths as sequences of topological subpaths called 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 the IGP […]
In this article we will understand IPv4 Class B subnetting. Let’s begin by understanding basic definitions. Definition of IP Address: An IP address is a 32 bit number that logically defines a host. IP address assigned to a LAN card or a device interface can change based on network admin’s requirement. Definition of Subnet Mask: […]
In this article we will understand IPv4 class C subnetting. Let’s begin by understanding basic definitions. Definition of IP Address: An IP address is a 32 bit number that logically defines a host. IP address assigned to a LAN card or a device interface can change based on network admin’s requirement. Definition of Subnet Mask: […]
Below is the list of RIP Version2 Characteristics and important points. RIPv2 is Distance-vector protocol which uses well-known UDP port number 520. RIPv2 is Classless protocol and supports VLSM or CIDR, however, RIPv2 also behaves classful if auto-summarization is enabled. Metric is router hop count. Metric/Hop Count increases when update is received on inbound interface […]
RIPv2 Authentication: One of the major concerns of network administrators which includes securing the exchange of routing information between routers, such as ensuring that the information contained in the routing table is valid and not originated or tampered by someone trying to disrupt the network. A network administrator can prevent your router from receiving fraudulent […]
RIP Route Summarization: Route summarization or route aggregation is a technique using which we create one summary route that is a superset of multiple smaller network subnets. Route summarization help us in multiple ways, for example, it helps in saving memory by reducing the size of routing tables reducing memory requirements. It also helps in […]