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	<title>debugall &#187; Zarar</title>
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	<link>http://www.debugall.co.uk</link>
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	<lastBuildDate>Mon, 27 Jun 2011 06:33:20 +0000</lastBuildDate>
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		<title>Multicast VPN</title>
		<link>http://www.debugall.co.uk/2011/06/27/multicast-vpn/</link>
		<comments>http://www.debugall.co.uk/2011/06/27/multicast-vpn/#comments</comments>
		<pubDate>Mon, 27 Jun 2011 06:33:20 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[MPLS VPN]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[MVPN]]></category>
		<category><![CDATA[PIM-SM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=781</guid>
		<description><![CDATA[PIM-SM, PIM-SSM, and PIM-BIDIR are all supported inside the provider core for MVPN. PIM-SM or PIM-SSM is the recommended PIM option in the provider core, because PIM-BIDIR is not yet supported by all platforms, PIM-SM, PIM-SSM, PIM-BIDIR and PIM-DENSE-MODE are supported inside the MVPN. MVPN has the concepts of Multicast Distribution Trees (MDT). An MDT [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>MVPN</title>
		<link>http://www.debugall.co.uk/2009/11/11/mvpn/</link>
		<comments>http://www.debugall.co.uk/2009/11/11/mvpn/#comments</comments>
		<pubDate>Wed, 11 Nov 2009 06:12:31 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[MVPN]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=900</guid>
		<description><![CDATA[Overview An SP determines whether a particular VPN is multicast-enabled. If it is, it corresponds to a &#8220;Multicast Domain&#8221;. A PE which attaches to a particular multicast-enabled VPN is said to belong to the corresponding Multicast Domain. For each Multicast Domain, there is a default &#8220;Multicast Distribution Tree (MDT)&#8221; through the backbone, connecting ALL of [...]]]></description>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Bidirectional PIM (bidir PIM)</title>
		<link>http://www.debugall.co.uk/2009/11/09/bidirectional-pim-bidir-pim/</link>
		<comments>http://www.debugall.co.uk/2009/11/09/bidirectional-pim-bidir-pim/#comments</comments>
		<pubDate>Mon, 09 Nov 2009 07:56:23 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[PIM bidir]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=898</guid>
		<description><![CDATA[Introduction RFC5015 specifies Bidirectional PIM (BIDIR-PIM), a variant of PIM Sparse-Mode (PIM-SM) that builds bidirectional shared trees connecting multicast sources and receivers. The shared tree for each multicast group is rooted at a multicast router called the Rendezvous Point (RP). Different multicast groups can use separate RPs within a PIM domain. Bidirectional PIM dispenses with [...]]]></description>
		<wfw:commentRss>http://www.debugall.co.uk/2009/11/09/bidirectional-pim-bidir-pim/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>PIM-SSM</title>
		<link>http://www.debugall.co.uk/2009/11/03/pim-ssm/</link>
		<comments>http://www.debugall.co.uk/2009/11/03/pim-ssm/#comments</comments>
		<pubDate>Tue, 03 Nov 2009 07:47:25 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[PIM-SSM]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=894</guid>
		<description><![CDATA[IP version 4 (IPv4) addresses in the 232/8 (232.0.0.0 to 232.255.255.255) range are designated as source-specific multicast (SSM) destination addresses and are reserved for use by source-specific applications and protocols. For IP version 6 (IPv6), the address prefix FF3x::/32 is reserved for source-specific multicast use. The SSM destination address 232.0.0.0 is reserved, and it must [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Layer 2 Multicast Addresses</title>
		<link>http://www.debugall.co.uk/2009/10/21/layer-2-multicast-addresses/</link>
		<comments>http://www.debugall.co.uk/2009/10/21/layer-2-multicast-addresses/#comments</comments>
		<pubDate>Wed, 21 Oct 2009 13:37:58 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=867</guid>
		<description><![CDATA[Network Interface cards can accept Ethernet frames destined towards the following MAC addresses. BIA (Mac Address of the NIC) 0xFFFF.FFFF.FFFF (Broadcast Address) A range of multicast Address In this post we will discuss the range of multicast addresses. Ethernet Multicast Addresses An Ethernet multicast address consists of the The IANA owned OUI MAC address 01:00:5e [...]]]></description>
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		<slash:comments>1</slash:comments>
		</item>
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		<title>Electing an RP (in brief)</title>
		<link>http://www.debugall.co.uk/2009/10/14/electing-an-rp-in-brief/</link>
		<comments>http://www.debugall.co.uk/2009/10/14/electing-an-rp-in-brief/#comments</comments>
		<pubDate>Wed, 14 Oct 2009 14:50:28 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[PIM-DM]]></category>
		<category><![CDATA[PIM-SM]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=858</guid>
		<description><![CDATA[The PIMv2 RFC states: &#8220;This specification does not mandate the use of a single mechanism to provide routers with the information to perform the group-to-RP mapping. Currently four mechanisms are possible, and all four have associated problems: Static Configuration: A PIM router MUST support the static configuration of group-to-RP mappings. Such a mechanism is not [...]]]></description>
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		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>PIM Assert Messages</title>
		<link>http://www.debugall.co.uk/2009/10/14/pim-assert-messages/</link>
		<comments>http://www.debugall.co.uk/2009/10/14/pim-assert-messages/#comments</comments>
		<pubDate>Wed, 14 Oct 2009 06:38:58 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[PIM-SM]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=855</guid>
		<description><![CDATA[Where multiple PIM routers peer over a shared LAN, it is possible for more than one upstream router to have valid forwarding state for a packet, which can lead to packet duplication. PIM does not attempt to prevent this from occurring. Instead, it detects when this has happened and elects a single forwarder amongst the [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Building the shared and shortest path Tree</title>
		<link>http://www.debugall.co.uk/2009/10/13/building-the-shared-and-shortest-path-tree/</link>
		<comments>http://www.debugall.co.uk/2009/10/13/building-the-shared-and-shortest-path-tree/#comments</comments>
		<pubDate>Tue, 13 Oct 2009 08:53:44 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[PIM-SM]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=848</guid>
		<description><![CDATA[The Shared tree is rooted at the RP and the shortest path tree is rooted at the Source of the multicast traffic. The following processes will be discussed. Building the shared tree between the receivers and the RP Forwarding unicast PIM Register packets from the source to the RP Building the shortest Path tree between [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Pim Packet Formats</title>
		<link>http://www.debugall.co.uk/2009/10/12/pim-packet-formats/</link>
		<comments>http://www.debugall.co.uk/2009/10/12/pim-packet-formats/#comments</comments>
		<pubDate>Mon, 12 Oct 2009 13:32:26 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE]]></category>
		<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[PIM-SM]]></category>
		<category><![CDATA[PIM]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=833</guid>
		<description><![CDATA[The following information was taken from the RFCs below. RFC 4601(Obsoletes RFC 2362) &#8212; Protocol Independent Multicast &#8211; Sparse Mode (PIM-SM) RFC 5059 &#8212; Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM) To read the RFCs please visit the links below. ftp://ftp.rfc-editor.org/in-notes/rfc4601.txt ftp://ftp.rfc-editor.org/in-notes/rfc5059.txt The following PIM packets formats are described within rfc 4601 and [...]]]></description>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Multicast posts</title>
		<link>http://www.debugall.co.uk/2009/10/11/multicast-posts/</link>
		<comments>http://www.debugall.co.uk/2009/10/11/multicast-posts/#comments</comments>
		<pubDate>Sun, 11 Oct 2009 13:18:03 +0000</pubDate>
		<dc:creator>Zarar</dc:creator>
				<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Multicast]]></category>
		<category><![CDATA[CCIE]]></category>
		<category><![CDATA[Mu]]></category>

		<guid isPermaLink="false">http://www.debugall.co.uk/?p=821</guid>
		<description><![CDATA[In the next few weeks, time permitting I will try and cover the following range of subjects around multicast. PIM-V2 PIM-SM PIM-SSM PIM-bidir Inter-domain Multicast MVPN Inter-As MVPN To begin with here is a list of some important reserved multicast addresses. Multicast Address Usage 224.0.0.1 All Multicast Hosts 224.0.0.2 All Multicast Routers 224.0.0.4 DVMRP Routers [...]]]></description>
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		<slash:comments>3</slash:comments>
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