Routing Protocols : RIP, OSPF, BGP, Unicast and Multicast Routing Protocols

Routing protocols specifies how router communicate with each other. The different routing protocols are : RIP, OSPF, BGP, Unicast and multicast routing protocols.

Summary

Routing protocols specifies how router communicate with each other. The different routing protocols are : RIP, OSPF, BGP, Unicast and multicast routing protocols.

Things to Remember

  1. RIP is the distance vector routing protocol.
  2. OSPF is the routing algorithm that uses the link state routing algorithm.
  3. BGP is also called the path vector routing algorithm. 

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Subjective Questions

Q1:

Define heart failure


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Heart failure, sometimes known as congestive heart failure (CHF), occurs when your heart muscle doesn't pump blood as well as it should. Conditions such as narrowed arteries in your heart (coronary artery disease) or high blood pressure gradually leave your heart too weak or stiff to fill and pump efficiently.</p>

Q2:

Define heart failure. Explain its causes, symptoms, and management


Type: Long Difficulty: Easy

Show/Hide Answer
Answer: <p>Heart failure, sometimes known as congestive heart failure (CHF), occurs when your heart muscle doesn't pump blood as well as it should. Conditions such as narrowed arteries in your heart (coronary artery disease) or high blood pressure gradually leave your heart too weak or stiff to fill and pump efficiently.</p>
<p>&nbsp;</p>
<p>Not all conditions that lead to heart failure can be reversed, but treatments can improve the signs and symptoms of heart failure and help you live longer. Lifestyle changes, such as exercising, reducing salt in your diet, managing stress and especially losing weight, can improve your quality of life.</p>
<p>&nbsp;</p>
<p>The best way to prevent heart failure is to control conditions that cause heart failures, such as coronary artery disease, high blood pressure, diabetes or obesity.</p>
<figure class="inline-left" style="width: 300px;"></figure>
<p><strong>Causes</strong></p>
<p>_ condition that increases preload : hypervolemia, VSD</p>
<p>_ conditions that increase afterload : hypertension, aortic or pulmonary stenosis</p>
<p>_ abnormal muscles function: myocardial infarction, myocarditis, cardiomyopathy.</p>
<p>_ Physical and emotional stress</p>
<p>_ infection</p>
<p>_ anemia</p>
<p>_ Thyroid disorder</p>
<p>_ chronic pulmonary disease</p>
<p>_ conditions that increase demand for oxygen delivery</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p><strong>Symptoms</strong></p>
<p>- Shortness of breath (dyspnea) when you exert yourself or when you lie down</p>
<p>- Fatigue and weakness</p>
<p>- Swelling (edema) in your legs, ankles, and feet</p>
<p>- Rapid or irregular heartbeat</p>
<p>- Reduced ability to exercise</p>
<p>- A persistent cough or wheezing with white or pink blood-tinged phlegm</p>
<p>- Increased need to urinate at night</p>
<p>- Swelling of your abdomen (ascites)</p>
<p>- Sudden weight gains from fluid retention</p>
<p>- Lack of appetite and nausea</p>
<p>- Difficulty concentrating or decreased alertness</p>
<p>- Sudden, severe shortness of breath and coughing up pink, foamy mucus</p>
<p>- Elevated blood pressure</p>
<p>- Chest pain, if your heart failure is caused by a heart attack</p>
<p>&nbsp;</p>
<p><strong>Diagnosis</strong></p>
<p>_ History taking and physical examination</p>
<p>_ Laboratory test :</p>
<p>1.liver function test</p>
<ol start="2">
<li>BUN and creatinine</li>
<li>Chest x-ray</li>
<li>Echocardiogram</li>
<li>Cardiac catheterization</li>
</ol>
<p>&nbsp;</p>
<p><strong>Management</strong></p>
<ol>
<li>Diuretics</li>
</ol>
<p>If there are symptoms or finding of volume overload, the patient should be immediately started diuretics.</p>
<ol start="2">
<li>ACE inhibitors</li>
</ol>
<p>It should be prescribed to all patients with heart failure who do not have contraindications, due to evidence that these medications reduce mortality and improve functional status.</p>
<p>&nbsp;</p>
<p><strong>Nursing management</strong></p>
<ol>
<li>Monitor vital signs, assess heart rhythm and rate.</li>
<li>Inspect and palpate precordium for lateral displacement of PMI.</li>
<li>Obtain hemodynamic measurement as indicated and note change from baseline.</li>
<li>Assess weight and ask about baseline weight.</li>
<li>Note results of serum electrolyte levels and laboratory tests.</li>
<li>Identify sleep patterns and sleep aids commonly used by patients.</li>
<li>Excessive fluid intake should be discouraged, but the fluid restriction is rarely indicated.</li>
<li>Moderate exercise such as walking or light exercise should be encouraged.</li>
<li>Dietary sodium should be restricted to 2 grams per day</li>
</ol>

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heart failure
heart failure
Routing Protocols : RIP, OSPF, BGP, Unicast and Multicast Routing Protocols

Routing Protocols : RIP, OSPF, BGP, Unicast and Multicast Routing Protocols

RIP

Routing Information Protocol (RIP) is the distance vector routing protocol. It employs the hop count as the routing metrics. Hop count is the number of a router the packet must travel till it reaches its destination. RIP uses the hop count to determine the best path between the router/location. Each router contains the RIP table and the table is updated in every 30 seconds. Each router broadcasts its entire RIP table to its neighbor.

OSPF

Open Shortest Path First (OSPF) is the routing algorithm that uses the link state routing algorithm. It is the shortest path algorithm to calculate the best path from the source to the destination. OSPF is perhaps the most widely used interior gateway protocol (IGP) in large enterprise networks. It falls into the group of interior routing protocols, operating within a single autonomous system (AS). OSPF doesn't need high memory and high-speed processor.

BGP

Border Gateway Protocol is the Exterior Gateway Protocol which is used for communicating information among autonomous systems (AS) on the Internet. Neighboring BGP routers i.e. BGP peers exchange detailed path information. It is also called the path vector routing algorithm. The protocols are more concerned with reachability than optimality.

fig:-BGP Communicating Between two AS
fig:-BGP Communicating Between two AS



Unicast

Simply unicast means one-to-one i.e. the transmission is done between two routers at a time. In this communication, sender sends the message to one side and the receiver receives the message to the other side.

Multicast

Simply multicast means one-to-many i.e. the transmission is done between more than two routers at a time. In this transmission, one or more sender sends the message to one side whereas there is multiple receivers to receive the message to the other side.
Example: Video server sending out networked TV channels.

fig:- Unicast Vs Multicast
fig:- Unicast Vs Multicast

Reference :

  1. Tanenbaum, WetherRall, Andrew S. David J. Computer Networks. 5th ed. Boston : Pearson Education, Inc.
  2. http://packetlife.net/blog/2008/oct/16/pim-crash-course/
  3. W. Stallings, “Data and Computer Communication”, Macmillan Press, 1989.
  4. Kurose Ross, “Computer Networking: A top-down approach”, 2nd Edition, Pearson Education
  5. Larry L. Peterson, Bruce S. Davie, “Computer Networks: A Systems Approach”, 3rd Edition, Morgan Kaufmann Publishers

Lesson

Network Layer

Subject

Computer Engineering

Grade

Engineering

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