OSPF SUMMARY ROUTE CALCULATOR UPDATE
OSPF SUMMARY ROUTE CALCULATOR PLUS

Of the interfaces on a downstream router is flapping, the summarized route 172.16.0.0 These addresses into just one network number.

OSPF SUMMARY ROUTE CALCULATOR UPDATE

Instead of sending four routing update entries, RouterA can summarize This can be seen using the 172.16.0.0 /25 subnetДЈ.4 Routers share the first 16 high-order bits and summarize on network 172.16.0.0 Of collapsing many subnet routes into a single network route is a fundamental Of the other three major networks, for a total of only 128 routes.

OSPF SUMMARY ROUTE CALCULATOR PLUS

That number would be reduced to 125 routers plus one additional route for each Need to know all the routes for each subnet in its network number. Of subnet address space (/23) instead of 9 bits (/25), the original 500 subnetsД¬ould be broken up into four major subnetworks of 125. If the 172.16.0.0 Class B network used 7 bits With route summarization, you can quickly reduce the size of the Subnets with 2 7 В– 2 = 126 hosts each) would need to know aboutДҐ00 routes. Without summarization,Д®ach router in a large enterprise network of 500 subnets (2 9 = 512 Take our previous sample network of 172.16.1.0 /25. The reduction in route propagation and routing information overhead can be The function of route summarization becomes. As the size of the network gets bigger, the more important Resulting in a reduction in both the resource load on the router and the overall Routers can condense some groups of routes down to a single link advertisement, Have a route to every subnet in the network environment. If no method existed for route summarization, every router would need to Lessens the load on router processor and memory resourcesДЇacilitates monitoring, reporting, and troubleshooting Reduces the amount of information stored in routing tablesДЄllocates an existing pool of addresses more economically The following are some of the many advantages to summarizing Hand-in-hand with VLSM to build hierarchically structured networkedД®nvironments. Protocols to summarize on bit boundaries. Variable-length subnet masks enable routing Although some routing protocols summarize onlyДЄt the boundaries of major network numbers, others support route summarization IP route summarization is a mechanism used to design networks that are CCNP BSCI Exam Cram 2 (Exam Cram 642-801)

Ospf summary route calculator