Unit 1: Network Infrastructure
This will allow you to demonstrate your networking skills, knowledge, and abilities, with a focus on enterprise-level switching, routing, and multicast components that support cross-platform (inter)operability and integration with the most recent software-defined technologies.
Non-Broadcast Multi-Access Networks are able to connect more than two routers, but they do not have the capability to broadcast signal transmissions. When operating on NBMA networks, OSPF routers choose a DR and a BDR, and all OSPF packets are unicast. As a result of their unicast nature, the neighbor declaration is required in order to specify potential neighbors. There is no requirement that they be positioned in every single location. As an illustration, in a DMVPN network, all that is required is for the hub router to have neighbor statements included. The DR election should also be forced, and all routers that are not hubs should be configured with the IP ospf priority set to 0. The next step is to ensure that the neighbor statements for the DRothers are included in the configuration of any router that is qualified to become the DR.
Additionally, a Point-to-MultiPoint segment can be modeled as any NBMA subnet that is available.
At every Hello Interval, routers that are eligible to become the DR will send out Hellos to all of the other eligible routers. To all other routers on the NBMA network, the duly elected DR and BDR will transmit Hellos. Starting at the Hello Interval, the Hello rate on NBMA networks may decrease to the Poll Interval (120 seconds) after a while. Only the DR and BDR will receive Hellos from routers set with Priority of 0 at each Hello Interval.
Membership Required
This Course and partial content under every lesson is restricted for Members Only. You must be a member to fully access this Course / Lesson content. You can still preview partially visible text content by using "Preview" tab for Every Lesson.
