Genie's Tech Blog

Where knowledge has no dimensions

OSPF Local-RIB

Hello Friends, Today, I will be sharing an interesting issue which we noticed during one of our migration projects. The feature that i am going to discuss today is the OSPF Local-RIB feature. In order to understand the feature, lets try to create the problematic condition. Consider the below topology: In the above topology, Rx router has the Loopback address of x.x.x.x/32 (ex. R1 has a loopback of 1.1.1.1/32). All the nodes are running basic OSPF configuration which is advertising the physical interface and the loopback interface. Thus we have a end to end reachability. Lets have a look at... [More]

FRoMPLS on IOS XR

Hello Friends, Today we are going to discuss on another L2VPN implementation i.e. FroMPLS (Frame-Relay over MPLS). In the early days, when Frame-Relay service was heavily used in the customer networks, the Service Providers used to provide Frame-Relay services with the help of Frame-Relay switches like LS1010 and several others. But over the time as the technology have advanced, the Service Providers have upgraded their network to use MPLS which gives them the flexibility to provide any kind of L2 service be it PPP or FR or ATM or plain Ethernet. They don;t need to deploy specific hardware in... [More]

Multicast Service Reflection - Converting Unicast to Multicast

Hello Readers, Today, we are going to discuss about an interesting topic which is Multicast Service Reflection. Consider a situation, where in a Live Webcast that needs to be conducted and there are thousand's of people who will be viewing this webcast. Will it be feasible to send a unicast to all the webcast viewers or a multicast. We know the answer: Its Multicast. But what if from where the server from where the webcast has to be hosted has some old software and does not support Multicast. The server can only send Unicast traffic. Or what if the situation is reversed. The end host where th... [More]