Download CCNP Quick Reference by Denise Donohue PDF

By Denise Donohue

Prior to you move take the try out you must learn no less than a few books getting ready you for it. you could even are looking to examine one of many video shows which are very good for supplying you with an total view. then you definately wish this publication. because the name says, this can be a quickly reference. It has major makes use of. First, it's a strong ultimate practise for taking the try out. moment, it's a speedy advisor to the topic with out a lot of clarification. if you need to know simply the main points approximately find out how to do anything, with out a lot of clarification -- use this e-book. you've gotten studied the large books. you recognize and (hopefully) take note the reasons. yet now you must understand simply precisely what to style in, what to seem for, what try to run. That info is the following. it truly is abbreviated to be certain, yet that implies you do not have to hold round an entire library. only a ultimate observe, be sure to get the 2010 variation, now not the only from many years in the past with an analogous identify.

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5. OSPF supports five network types: ■ NBMA—Default for multipoint serial interfaces. RFC-compliant mode that uses DRs and requires manual neighbor configuration. ■ Point-to–multipoint (P2MP)—Doesn’t use DRs so adjacencies increase logarithmically with routers. Resilient RFC compliant mode that automatically discovers neighbors. Chapter 3: OSPF Point-to-multipoint nonbroadcast (P2MNB)—Proprietary mode that is used on Layer 2 facilities where dynamic neighbor discovery is not supported. Requires manual neighbor configuration.

It is an example of many services existing on one device. A load balancer, which makes many servers look like one, is an example of one service residing on many devices. VRFs are an example of taking one resource and making it look like many. Some versions of IOS are capable of having a router present itself as many virtual router (VRF) instances, allowing your company to deliver different logical topologies on the same physical infrastructure. Server virtualization is Chapter 1: The Evolving Network Model [9] another example.

To limit routing information even more, an area can be made totally stubby using the no-summary keyword on the ABR only. In that case, all interarea and external routes are dropped by the ABR and replaced by a default route. The default route starts with a cost of 1; to change it, use the area default-cost command. The example that follows shows area 2 configured as a totally stubby area, and the default route injected with a cost of 5: Router(config-router)#area 2 stub no-summary Router(config-router)#area 2 default-cost 5 Stub areas are attractive because of their low overhead.

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