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	<title>Networkers-online.com &#187; OSPF</title>
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	<link>http://www.networkers-online.com/blog</link>
	<description>Networkers&#039; Home on the Internet</description>
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		<title>The endless story of OSPF vs IS-IS &#8211; Part 4 &#8220;The Inside Out&#8221;</title>
		<link>http://www.networkers-online.com/blog/2010/05/the-endless-story-of-ospf-vs-is-is-part-4-the-inside-out/</link>
		<comments>http://www.networkers-online.com/blog/2010/05/the-endless-story-of-ospf-vs-is-is-part-4-the-inside-out/#comments</comments>
		<pubDate>Sat, 22 May 2010 19:22:47 +0000</pubDate>
		<dc:creator>mmahmoud</dc:creator>
				<category><![CDATA[Bury the hatchet]]></category>
		<category><![CDATA[IGP]]></category>
		<category><![CDATA[ISIS]]></category>
		<category><![CDATA[Network Design]]></category>
		<category><![CDATA[OSPF]]></category>
		<category><![CDATA[Routing]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=448</guid>
		<description><![CDATA[In this post we&#8217;ll be covering a couple of topics from the Inside Out of the link-state protocols that have always been ambiguous and full of details, we&#8217;ll try to make them as crystal clear as we can. MTU: Both link-state routing protocols consider MTU in order to prevent any related problems, mainly loss of [...]


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		<slash:comments>2</slash:comments>
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		<item>
		<title>The endless story of OSPF vs IS-IS &#8211; Part 3 &#8220;Packets and Database&#8221;</title>
		<link>http://www.networkers-online.com/blog/2010/05/the-endless-story-of-ospf-vs-is-is-part-3-packets-and-database/</link>
		<comments>http://www.networkers-online.com/blog/2010/05/the-endless-story-of-ospf-vs-is-is-part-3-packets-and-database/#comments</comments>
		<pubDate>Sun, 16 May 2010 20:57:30 +0000</pubDate>
		<dc:creator>mmahmoud</dc:creator>
				<category><![CDATA[Bury the hatchet]]></category>
		<category><![CDATA[IGP]]></category>
		<category><![CDATA[ISIS]]></category>
		<category><![CDATA[Network Design]]></category>
		<category><![CDATA[OSPF]]></category>
		<category><![CDATA[Routing]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=435</guid>
		<description><![CDATA[In this post we are going to cover the protocol packets and database structure for both routing protocols. To start let&#8217;s first highlight a couple of facts. OSPF runs on top of IP, that is it uses IP packets to exchange its messages (and thus it is vulnerable to spoofing and DoS attacks, and accordingly [...]


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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>The endless story of OSPF vs IS-IS &#8211; Part 2 &#8220;The history&#8221;</title>
		<link>http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is-part-2-the-history/</link>
		<comments>http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is-part-2-the-history/#comments</comments>
		<pubDate>Mon, 26 Apr 2010 20:30:43 +0000</pubDate>
		<dc:creator>mmahmoud</dc:creator>
				<category><![CDATA[Bury the hatchet]]></category>
		<category><![CDATA[IGP]]></category>
		<category><![CDATA[ISIS]]></category>
		<category><![CDATA[Network Design]]></category>
		<category><![CDATA[OSPF]]></category>
		<category><![CDATA[Routing]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=427</guid>
		<description><![CDATA[In our previous post we started consolidating the endless story of OSPF vs IS-IS, in this post we will cover the historical part of the story, it might not be interesting for some people, but I do believe that the history is what makes the future, so please bare with me through this post. The [...]


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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>The endless story of OSPF vs IS-IS</title>
		<link>http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is/</link>
		<comments>http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is/#comments</comments>
		<pubDate>Sun, 04 Apr 2010 11:10:38 +0000</pubDate>
		<dc:creator>mmahmoud</dc:creator>
				<category><![CDATA[Bury the hatchet]]></category>
		<category><![CDATA[IGP]]></category>
		<category><![CDATA[ISIS]]></category>
		<category><![CDATA[Network Design]]></category>
		<category><![CDATA[OSPF]]></category>
		<category><![CDATA[Routing]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=349</guid>
		<description><![CDATA[Whenever you have a little IGP chit chat you&#8217;ll hit this endless story. I&#8217;ve tried to reach a final solid conclusion my self but IMHO its all about personal preference and taste. It is something like a Ferrari vs Lamborghini story, they offer comparable performance, but totally different feeling. It is all about a good [...]


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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>OSPF &amp; IS-IS Router ID</title>
		<link>http://www.networkers-online.com/blog/2009/03/ospf-is-is-router-id/</link>
		<comments>http://www.networkers-online.com/blog/2009/03/ospf-is-is-router-id/#comments</comments>
		<pubDate>Mon, 02 Mar 2009 08:34:30 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[ISIS]]></category>
		<category><![CDATA[OSPF]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=187</guid>
		<description><![CDATA[When you think about Router ID in any link state protocol  two requirements come to mind: Each router must be identified by a Router ID and an Area to exist in. This Router ID must be unique inside a single IGP domain. IS-IS refers to the this ID as a System ID (SysID) and OSPF [...]


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		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>Link state protocols and Areas concept</title>
		<link>http://www.networkers-online.com/blog/2009/02/link-state-protocols-and-areas-concept/</link>
		<comments>http://www.networkers-online.com/blog/2009/02/link-state-protocols-and-areas-concept/#comments</comments>
		<pubDate>Mon, 23 Feb 2009 19:52:48 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[ISIS]]></category>
		<category><![CDATA[Network Design]]></category>
		<category><![CDATA[OSPF]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=184</guid>
		<description><![CDATA[Link state protocols have introduced the concept of multiple routing areas withing the same routing domain. Link state protocols depend on the fact that all routers must have an identical link state database and then each router will start calculating its very own routing table from this information. However, this rule sometimes introduce scalability limitations [...]


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		<wfw:commentRss>http://www.networkers-online.com/blog/2009/02/link-state-protocols-and-areas-concept/feed/</wfw:commentRss>
		<slash:comments>8</slash:comments>
		</item>
		<item>
		<title>OSPF Virtual-links vs GRE tunnels</title>
		<link>http://www.networkers-online.com/blog/2008/10/ospf-virtual-links-vs-gre-tunnels/</link>
		<comments>http://www.networkers-online.com/blog/2008/10/ospf-virtual-links-vs-gre-tunnels/#comments</comments>
		<pubDate>Tue, 21 Oct 2008 17:53:32 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[OSPF]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=84</guid>
		<description><![CDATA[Everyone who works in networking knows that every area in the OSPF domain must be connected to the backbone area (Area0). The reason behind this constrain is explained here. However it may be difficult for some reason to physically connect an area to the backbone; in such cases you will have to provide a logical [...]


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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>distribute-list gateway with OSPF</title>
		<link>http://www.networkers-online.com/blog/2008/10/distribute-list-gateway-with-ospf/</link>
		<comments>http://www.networkers-online.com/blog/2008/10/distribute-list-gateway-with-ospf/#comments</comments>
		<pubDate>Sat, 18 Oct 2008 13:54:32 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[CISCO HOW-TO]]></category>
		<category><![CDATA[OSPF]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=81</guid>
		<description><![CDATA[The following example is showing how to use distribute-list with the gateway option for inbound route filtering  in OSPF. The diagram below shows R1 directly connected to R2 with OSPF configured between them. Initial Configuration: !-- R1 OSPF configuration router ospf 1 router-id 1.1.1.1 log-adjacency-changes network 172.16.12.1 0.0.0.0 area 0 network 172.16.101.1 0.0.0.0 area 0 [...]


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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>OSPF DR/BDR Election Myth</title>
		<link>http://www.networkers-online.com/blog/2008/08/ospf-drbdr-election-myth/</link>
		<comments>http://www.networkers-online.com/blog/2008/08/ospf-drbdr-election-myth/#comments</comments>
		<pubDate>Wed, 13 Aug 2008 09:09:04 +0000</pubDate>
		<dc:creator>mmahmoud</dc:creator>
				<category><![CDATA[Bury the hatchet]]></category>
		<category><![CDATA[OSPF]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=46</guid>
		<description><![CDATA[OSPF DR/BDR election process is something that is full of many details, i hope that in the following thread i can cover its main aspects. Each multi-access segment (ex: Ethernet Segment), will have 1 DR and 1 BDR. Each router on the segment forms a Full adjacency with the DR/BDR. Keep in mind that a [...]


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		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>OSPF RID Story</title>
		<link>http://www.networkers-online.com/blog/2008/08/ospf-rid-story/</link>
		<comments>http://www.networkers-online.com/blog/2008/08/ospf-rid-story/#comments</comments>
		<pubDate>Wed, 13 Aug 2008 09:06:10 +0000</pubDate>
		<dc:creator>mmahmoud</dc:creator>
				<category><![CDATA[Bury the hatchet]]></category>
		<category><![CDATA[OSPF]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=45</guid>
		<description><![CDATA[Understanding the need for OSPF RID and how to control it is indeed a very important aspect to take care of when dealing with OSPF. The RID is a dotted decimal value used by OSPF routers to identify the other OSPF routers. Beside being used in OSPF operations, and to identify the neighbors in the [...]


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		<slash:comments>5</slash:comments>
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