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	<title>Networkers-online.com &#187; Network Design</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>How to: use IS-IS overload bit</title>
		<link>http://www.networkers-online.com/blog/2010/08/how-to-use-is-is-overload-bit/</link>
		<comments>http://www.networkers-online.com/blog/2010/08/how-to-use-is-is-overload-bit/#comments</comments>
		<pubDate>Mon, 30 Aug 2010 13:37:12 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[CISCO HOW-TO]]></category>
		<category><![CDATA[ISIS]]></category>
		<category><![CDATA[Network Design]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=560</guid>
		<description><![CDATA[Overload bit is special bit in the IS-IS LSP used to inform the network that the advertising router is not yet ready to forward transit traffic.  The overload bit was first intended for signaling overload or resource shortage on specific router for the rest of the network. You can use the command set-overload-bit intentionally on [...]


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<li><a href='http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is/' rel='bookmark' title='Permanent Link: The endless story of OSPF vs IS-IS'>The endless story of OSPF vs IS-IS</a> <small>Whenever you have a little IGP chit chat you&#8217;ll hit...</small></li>
<li><a href='http://www.networkers-online.com/blog/2010/05/the-endless-story-of-ospf-vs-is-is-part-4-the-inside-out/' rel='bookmark' title='Permanent Link: The endless story of OSPF vs IS-IS &#8211; Part 4 &#8220;The Inside Out&#8221;'>The endless story of OSPF vs IS-IS &#8211; Part 4 &#8220;The Inside Out&#8221;</a> <small>In this post we&#8217;ll be covering a couple of topics...</small></li>
</ol>

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		<wfw:commentRss>http://www.networkers-online.com/blog/2010/08/how-to-use-is-is-overload-bit/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Before you buy a Console Server</title>
		<link>http://www.networkers-online.com/blog/2010/08/before-you-buy-a-console-server/</link>
		<comments>http://www.networkers-online.com/blog/2010/08/before-you-buy-a-console-server/#comments</comments>
		<pubDate>Wed, 25 Aug 2010 11:59:19 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[Case Studies]]></category>
		<category><![CDATA[Network Design]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=551</guid>
		<description><![CDATA[In my post about out of band management networks I mentioned console servers as a mean of providing centralized remote access to network devices collocated in the same site. This post is a complementary post for the previous one if you are planning to use a console server in your out of band management network. [...]


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<li><a href='http://www.networkers-online.com/blog/2010/01/how-to-select-your-core-routers/' rel='bookmark' title='Permanent Link: How to select your core routers?'>How to select your core routers?</a> <small>This question comes to my mind every time we are...</small></li>
<li><a href='http://www.networkers-online.com/blog/2009/12/carrier-routing-system-crs-1-overview/' rel='bookmark' title='Permanent Link: Carrier Routing System (CRS-1) Overview'>Carrier Routing System (CRS-1) Overview</a> <small>We have finished the physical installation of our CRS-1 routers...</small></li>
</ol>

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		<wfw:commentRss>http://www.networkers-online.com/blog/2010/08/before-you-buy-a-console-server/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Out of Band Management Networks &#8211; Console Servers</title>
		<link>http://www.networkers-online.com/blog/2010/08/out-of-band-management-networks/</link>
		<comments>http://www.networkers-online.com/blog/2010/08/out-of-band-management-networks/#comments</comments>
		<pubDate>Wed, 18 Aug 2010 12:05:21 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[Case Studies]]></category>
		<category><![CDATA[Network Design]]></category>

		<guid isPermaLink="false">http://www.networkers-online.com/blog/?p=474</guid>
		<description><![CDATA[Building a robust out of band management network is a critical part of any service provider or large enterprise backbone. Although failures may not occur frequently but believe me if you are not prepared when they happen you will know how OoB management is important and critical. Network failures do happen for reasons ranging from [...]


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<li><a href='http://www.networkers-online.com/blog/2010/04/the-role-of-bgp-in-mpls-networks/' rel='bookmark' title='Permanent Link: The Role of BGP in MPLS networks'>The Role of BGP in MPLS networks</a> <small>In almost every book you will read about MPLS, the...</small></li>
<li><a href='http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is/' rel='bookmark' title='Permanent Link: The endless story of OSPF vs IS-IS'>The endless story of OSPF vs IS-IS</a> <small>Whenever you have a little IGP chit chat you&#8217;ll hit...</small></li>
</ol>

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		<slash:comments>3</slash:comments>
		</item>
		<item>
		<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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<li><a href='http://www.networkers-online.com/blog/2010/05/the-endless-story-of-ospf-vs-is-is-part-3-packets-and-database/' rel='bookmark' title='Permanent Link: The endless story of OSPF vs IS-IS &#8211; Part 3 &#8220;Packets and Database&#8221;'>The endless story of OSPF vs IS-IS &#8211; Part 3 &#8220;Packets and Database&#8221;</a> <small>In this post we are going to cover the protocol...</small></li>
<li><a href='http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is/' rel='bookmark' title='Permanent Link: The endless story of OSPF vs IS-IS'>The endless story of OSPF vs IS-IS</a> <small>Whenever you have a little IGP chit chat you&#8217;ll hit...</small></li>
</ol>

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		<slash:comments>2</slash:comments>
		</item>
		<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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<li><a href='http://www.networkers-online.com/blog/2010/04/the-endless-story-of-ospf-vs-is-is-part-2-the-history/' rel='bookmark' title='Permanent Link: The endless story of OSPF vs IS-IS &#8211; Part 2 &#8220;The history&#8221;'>The endless story of OSPF vs IS-IS &#8211; Part 2 &#8220;The history&#8221;</a> <small>In our previous post we started consolidating the endless story...</small></li>
<li><a href='http://www.networkers-online.com/blog/2010/04/is-is-dis-in-practice/' rel='bookmark' title='Permanent Link: IS-IS DIS in Practice'>IS-IS DIS in Practice</a> <small>In the previous post IS-IS Neighbor Discovery we have discussed...</small></li>
</ol>

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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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<li><a href='http://www.networkers-online.com/blog/2010/03/bgp-route-refresh-capability/' rel='bookmark' title='Permanent Link: BGP Route Refresh Capability'>BGP Route Refresh Capability</a> <small>Service Providers or Large enterprises commonly change routing policies from...</small></li>
<li><a href='http://www.networkers-online.com/blog/2009/12/cisco-or-juniper-which-one-should-i-choose/' rel='bookmark' title='Permanent Link: Cisco or Juniper, Which one should I choose?'>Cisco or Juniper, Which one should I choose?</a> <small>Being in charge of choosing the right boxes for a...</small></li>
</ol>

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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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<li><a href='http://www.networkers-online.com/blog/2010/03/is-is-mtu-mismatch/' rel='bookmark' title='Permanent Link: IS-IS MTU Mismatch'>IS-IS MTU Mismatch</a> <small>IS-IS uses the concept of distributed map or database, each...</small></li>
<li><a href='http://www.networkers-online.com/blog/2010/02/mtu-and-ping-size-confusion/' rel='bookmark' title='Permanent Link: MTU and ping size confusion'>MTU and ping size confusion</a> <small>I am very glade to return back after pausing posting...</small></li>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>How to select your core routers?</title>
		<link>http://www.networkers-online.com/blog/2010/01/how-to-select-your-core-routers/</link>
		<comments>http://www.networkers-online.com/blog/2010/01/how-to-select-your-core-routers/#comments</comments>
		<pubDate>Mon, 04 Jan 2010 18:34:35 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[Network Design]]></category>
		<category><![CDATA[Platforms]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=233</guid>
		<description><![CDATA[This question comes to my mind every time we are faced by choosing a new device for our network or whenever I read about hardware architecture of networking devices. However, when the time comes for  choosing routers for a large network migration I thought it will be wise to have a checklist or a model [...]


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<li><a href='http://www.networkers-online.com/blog/2009/12/crs-1-hardware-overview/' rel='bookmark' title='Permanent Link: CRS-1 Hardware Overview'>CRS-1 Hardware Overview</a> <small>After introducing the Cisco  CRS-1 router in a previous post,...</small></li>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>CRS-1 Hardware Overview</title>
		<link>http://www.networkers-online.com/blog/2009/12/crs-1-hardware-overview/</link>
		<comments>http://www.networkers-online.com/blog/2009/12/crs-1-hardware-overview/#comments</comments>
		<pubDate>Wed, 23 Dec 2009 10:33:53 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[Network Design]]></category>
		<category><![CDATA[Platforms]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=222</guid>
		<description><![CDATA[After introducing the Cisco  CRS-1 router in a previous post, We are going to delve more into the hardware architecture of this router. I believe we have to start by defining the main hardware components of the CRS-1 router and briefly describe their functions. In later posts we are going to study each part in [...]


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<li><a href='http://www.networkers-online.com/blog/2009/12/bgp-table-analysis-and-statistics/' rel='bookmark' title='Permanent Link: BGP table analysis and statistics'>BGP table analysis and statistics</a> <small>For those of you who are interested in obtaining some...</small></li>
<li><a href='http://www.networkers-online.com/blog/2009/12/cisco-or-juniper-which-one-should-i-choose/' rel='bookmark' title='Permanent Link: Cisco or Juniper, Which one should I choose?'>Cisco or Juniper, Which one should I choose?</a> <small>Being in charge of choosing the right boxes for a...</small></li>
</ol>

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		<wfw:commentRss>http://www.networkers-online.com/blog/2009/12/crs-1-hardware-overview/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Carrier Routing System (CRS-1) Overview</title>
		<link>http://www.networkers-online.com/blog/2009/12/carrier-routing-system-crs-1-overview/</link>
		<comments>http://www.networkers-online.com/blog/2009/12/carrier-routing-system-crs-1-overview/#comments</comments>
		<pubDate>Thu, 10 Dec 2009 11:45:33 +0000</pubDate>
		<dc:creator>Wael Osama</dc:creator>
				<category><![CDATA[Network Design]]></category>
		<category><![CDATA[Platforms]]></category>

		<guid isPermaLink="false">http://networkers-online.com/blog/?p=210</guid>
		<description><![CDATA[We have finished the physical installation of our CRS-1 routers this week, so I thought it would be nice to have some discussions about CRS-1, Juniper T-series and some general high end platform concepts. I believe this will be a series of posts, we can start with the CRS-1 overview. The CRS-1 is a carrier [...]


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<li><a href='http://www.networkers-online.com/blog/2009/12/bgp-table-analysis-and-statistics/' rel='bookmark' title='Permanent Link: BGP table analysis and statistics'>BGP table analysis and statistics</a> <small>For those of you who are interested in obtaining some...</small></li>
</ol>

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		<wfw:commentRss>http://www.networkers-online.com/blog/2009/12/carrier-routing-system-crs-1-overview/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
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