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Understanding the IP Multicast Helper-Map Command

Tue, 06 May 2008 22:13:45 +0000
Hi Brian,
I have a problem with the multicast helper topic, the case when a broadcast network is separated by a multicast network, and then again it continues. Can you discuss this topic?
Thanks,
Nizami

Hi Nizami,
The multicast helper-map command is similar in theory to how the unicast “ip helper-map” works. With the IP helper map feature, ...]


A break through - at last!

Thu, 08 May 2008 09:58:50 +0000
I thought I would post to let you know that I’m back on track; the lack of a deadline that is completely unachievable and a move to a more comfortable desk (the dining table!) allowed me to enjoy last night’s studies and make some real progress.  After a couple of weeks of struggling it was ...]

Understanding BGP Outbound Route Filtering (BGP ORF)

Mon, 05 May 2008 19:31:56 +0000
Hi Brian,
I’m having a problem with Workbook Volume 1 Version 4.1. ORF (Outbound Route Filtering) isn’t working for me. Any help would be appreciated.
Thank you,
JoeT

Hi Joe,
First off let’s talk a little bit about what BGP ORF (Outbound Route Filtering) is designed to do for us, and then we’ll take a look at ...]


R&S Lab Diagrams

Thu, 17 Apr 2008 01:28:22 +0000
There are a lot of rumors floating around in regards to diagrams in the R&S CCIE lab.  Cisco officially has said little in regards to this other than the following “the lab document has L1/L2 diagrams for the physical connectivity as well as an IP or topology diagram and an IP Routing diagram”.  This is ...]


Multiprotocol BGP - IPv4 Multicast

Fri, 09 May 2008 08:21:10 +0000
To route multicast traffic between AS’ MBGP is the tool of choice….
RFC 2283 = two new BGP attributes:


Multiprotocol Reachable NLRI (MP_REACH_NLRI)


Type 14


Optional and nontransitive


Always an IPv4 prefix describing feasible routes of one or more multicast sources to advertise (not used for packet forwarding, used for RPF checks)


Address Family Information + Next Hop Information + NLRI ...]

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