Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,000 --> 00:00:06,000 align:middle line:84% Link state routing protocols however also have drawbacks or disadvantages 2 00:00:06,000 --> 00:00:12,000 align:middle line:84% the first disadvantage is that they have a greater demand for resources 3 00:00:12,000 --> 00:00:15,000 align:middle line:84% than distance vector routing protocols do. 4 00:00:15,000 --> 00:00:17,000 align:middle line:84% Link state routing protocols require more memory 5 00:00:17,000 --> 00:00:20,000 align:middle line:84% the routers have multiple tables 6 00:00:20,000 --> 00:00:23,000 align:middle line:84% so for example, they’ll have a peer table or neighbor table 7 00:00:23,000 --> 00:00:30,000 align:middle line:84% they’ll have a topology table or Link State Database also called LSDB database 8 00:00:30,000 --> 00:00:32,000 align:middle line:84% and they have a routing table. 9 00:00:32,000 --> 00:00:37,000 align:middle line:84% More memory is required to hold multiple tables 10 00:00:37,000 --> 00:00:41,000 align:middle line:84% then would be necessary with a distance vector routing protocol. 11 00:00:41,000 --> 00:00:49,000 align:middle line:84% There’s also more demand on the CPU of the router or switch when running OSPF or ISIS. 12 00:00:49,000 --> 00:00:52,000 align:middle line:84% The Dijkstra algorithm can be very process intensive 13 00:00:52,000 --> 00:00:55,000 align:middle line:84% especially when there are a lot of changes in the topology. 14 00:00:55,000 --> 00:01:00,000 align:middle line:84% Link state routing protocols also requires strict designs 15 00:01:00,000 --> 00:01:07,000 align:middle line:84% in OSPF as an example, area 0 is always required when you have more than 1 area. 16 00:01:07,000 --> 00:01:11,000 align:middle line:84% All other area have to touch the backbone area or area 0. 17 00:01:11,000 --> 00:01:17,000 align:middle line:84% All traffic from 1 area to another area has to traverse the backbone area. 18 00:01:17,000 --> 00:01:20,000 align:middle line:84% The configuration of OSPF is, therefore, more complex 19 00:01:20,000 --> 00:01:23,000 align:middle line:84% than distance vector routing protocol such as RIP. 20 00:01:23,000 --> 00:01:28,000 align:middle line:84% However, the advantages of link state routing protocols generally far out way 21 00:01:28,000 --> 00:01:33,000 align:middle line:84% the disadvantages and this is especially true in large environments. 22 00:01:33,000 --> 00:01:38,000 align:middle line:84% Thus in large topologies, OSPF is seen as a much better choice than RIP. 2754