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These are the user uploaded subtitles that are being translated: 1 00:00:00,000 --> 00:00:07,000 align:middle line:84% Routing protocols use different criteria to determine the best part to a destination. 2 00:00:07,000 --> 00:00:11,000 align:middle line:84% As an example with static routes the administrator 3 00:00:11,000 --> 00:00:15,000 align:middle line:84% decides which path the traffic will take. 4 00:00:15,000 --> 00:00:20,000 align:middle line:84% With RIP hop count is the determining factor or criteria 5 00:00:20,000 --> 00:00:25,000 align:middle line:84% and with OSPF bandwidth is the determining factor. 6 00:00:25,000 --> 00:00:31,000 align:middle line:84% We as humans do this all the time when driving from point A to point B 7 00:00:31,000 --> 00:00:36,000 align:middle line:84% we will determine the best path to take based on criteria 8 00:00:36,000 --> 00:00:40,000 align:middle line:84% such as the speed limit, congestion on a highway 9 00:00:40,000 --> 00:00:43,000 align:middle line:84% or motorway, the amount of time we have 10 00:00:43,000 --> 00:00:48,000 align:middle line:84% and perhaps some other criteria, essentially you are working out 11 00:00:48,000 --> 00:00:51,000 align:middle line:84% the best route to take from point A to point B 12 00:00:51,000 --> 00:00:55,000 align:middle line:84% based on some criteria that’s important to you. 13 00:00:55,000 --> 00:01:02,000 align:middle line:84% Typically to get from point A to point B in the shortest time possible. 14 00:01:02,000 --> 00:01:04,000 align:middle line:84% in the same way in this topology 15 00:01:04,000 --> 00:01:09,000 align:middle line:84% when traffic is sent from San Francisco to San Jose 16 00:01:09,000 --> 00:01:12,000 align:middle line:84% which path will the traffic take? 17 00:01:12,000 --> 00:01:16,000 align:middle line:84% as an example, when using the RIP routing protocol 18 00:01:16,000 --> 00:01:21,000 align:middle line:84% RIP would send the traffic directly from San Francisco to San Jose 19 00:01:21,000 --> 00:01:24,000 align:middle line:84% RIP doesn’t take bandwidth into account 20 00:01:24,000 --> 00:01:28,000 align:middle line:84% so if we had a network of 10.1.1.0 in San Francisco 21 00:01:28,000 --> 00:01:32,000 align:middle line:84% and a network of 10.1.2.0 in San Jose 22 00:01:32,000 --> 00:01:37,000 align:middle line:84% RIP would take the direct path between those 2 networks 23 00:01:37,000 --> 00:01:43,000 align:middle line:84% and that’s because the number of hops is less than going via New York. 24 00:01:43,000 --> 00:01:46,000 align:middle line:84% RIP will not send traffic via New York 25 00:01:46,000 --> 00:01:51,000 align:middle line:84% it will send the traffic directly between San Francisco and San Jose 26 00:01:51,000 --> 00:01:56,000 align:middle line:84% RIP, however, is not considering the bandwidth of the links 27 00:01:56,000 --> 00:01:58,000 align:middle line:84% so even though there are fewer hops 28 00:01:58,000 --> 00:02:03,000 align:middle line:84% it may be quicker to send the traffic via New York rather than directly. 29 00:02:03,000 --> 00:02:07,000 align:middle line:84% OSPF, on the other hand, takes bandwidth into account 30 00:02:07,000 --> 00:02:12,000 align:middle line:84% so, in this case, OSPF would send the traffic via New York 31 00:02:12,000 --> 00:02:15,000 align:middle line:84% because the link speeds are greater. 32 00:02:15,000 --> 00:02:20,000 align:middle line:84% OSPF is a more powerful routing protocol and makes better decisions 33 00:02:20,000 --> 00:02:24,000 align:middle line:84% because it takes bandwidth into account when determining the best path. 34 00:02:24,000 --> 00:02:30,000 align:middle line:84% RIP doesn’t it simply looks at the number of hops from point A to point B. 35 00:02:30,000 --> 00:02:33,000 align:middle line:84% this is a very basic topology 36 00:02:33,000 --> 00:02:38,000 align:middle line:84% simply used as an example to show you how routing protocols 37 00:02:38,000 --> 00:02:41,000 align:middle line:84% determine the best path or best route to a destination. 38 00:02:41,000 --> 00:02:44,000 align:middle line:84% The moral of the story is as follows: 39 00:02:44,000 --> 00:02:48,000 align:middle line:84% different routing protocols have different criteria 40 00:02:48,000 --> 00:02:51,000 align:middle line:84% to determine the best path from A to B. 41 00:02:51,000 --> 00:02:57,000 align:middle line:84% OSPF once again takes bandwidth into account when determining the best path. 42 00:02:57,000 --> 00:03:04,000 align:middle line:90% RIP doesn’t, some routing protocols will make better decisions than other routing protocols. 43 00:03:04,000 --> 00:03:12,000 align:middle line:84% Generally, today you’re going to use either OSPF or EIGRP in most enterprise networks. 44 00:03:12,000 --> 00:03:17,000 align:middle line:84% EIGRP is a popular routing protocol when you have a Cisco only network. 45 00:03:17,000 --> 00:03:22,000 align:middle line:84% EIGRP is a proprietary Cisco routing protocol 46 00:03:22,000 --> 00:03:25,000 align:middle line:84% and may not be supported by other vendors 47 00:03:25,000 --> 00:03:28,000 align:middle line:84% OSPF is an industry standard routing protocol 48 00:03:28,000 --> 00:03:33,000 align:middle line:84% and is therefore better to use when you have a multi-vendor network. 5755