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What is 6PE?


6PE is one of the efficient solutions for interconnecting IPv6 islands over an IPv4-only MPLS cloud without needing to drastically change the core network design by having all your Core routers dual-stacked 6PE does not use manual standard tunnels, it provides an alternative where all tunnels are established dynamically eliminating the need to configure and maintain tunnels. The approach requires that the edge routers connected to IPv6 islands be Dual Stack Multiprotocol-BGP-speaking routers. while the core routers can only run IPv4 MPLS Configuring 6PE is has a lot of similarities with configuring  IPv4 VPNs as both use MP-BGP to distribute non-IPv4 reachability …

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IPv6 Tutorial

This is a collected IPv6 tutorial form IPv6 posts we have written and should be a good starting point for anyone who is just learning about IPv6. IPv6 was first formally described in Internet standard document RFC 2460. IPv6 offers more addresses, and implements features not present in IPv4. It simplifies aspects of address assignment (stateless address autoconfiguration), network renumbering, and router announcements when changing network connectivity providers. It simplifies processing of packets in routers by placing the responsibility for packet fragmentation into the end points. IPv6 overview IPv6 is also called IPng or IP next generation; it builds on …

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IPv6 Tutorial: IPv6 Unicast Address

To refresh our memories, we started our IPv6 tutorial  with an overview then we moved to IPv6 addressing in general and in this post I am moving deeper into IPv6 addressing types. As promised I will keep things simple and clean for you and for me, so let’s begin. Generally speaking IPv6 unicast addresses play the same role unicast addresses used to play in IPv4 networks. There are plenty of different IPv6 unicast types this post will focus on four of them. Global unicast address: Global IPv6 unicast addresses are equivalent to the public IPv4 addresses, this means they are …

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IPv6 Tutorial: IPv6 Addressing #1

I am back again with the second post in this series, in the first post we had an overview of IPv6 and the need for it in the near future. In this post we will start breaking the technical ice of IPv6; I am going to discuss basic IPv6 addressing. This will need more than one post to finish. My philosophy for this series will be “Cut the jargon and keep things, simple and straight as possible”. That’s why I will try to keep it short and to the point . Let us begin: IPv6 Address size and space: This …

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IPv6 Tutorial: The overview

I will start from the beginning; two weeks ago I wrote a post claiming that IPv4 is depleting and IPv6 is coming soon; and since we are considering deploying IPv6 soon in our network, I thought it might be useful to write about IPv6 migration and transition strategies. Although, this is important but I think the readers of this blog including me will benefit more if we start at the beginning even if it takes longer to get where I wanted to start. I will start small and build up as we go toward the new IPv6 internet. Get yourself …

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7 Actions to get your network ready for IPv6

IPv4 is depleting so fast and time comes to get ready for IPv6. IPv6 may come to real life by 2012/2013. I am making a big claim here and I think I need to back it up with some facts: IPv4 address space is estimated to deplete somewhere in 2011. Check this Report. U.S government agencies are ready for IPv6 since June 2008. Large service providers are IPv6 ready or being ready now. Google your service provider. Content providers are preparing for IPv6. Google is one of the leaders in this transition. Just do a simple search to see the …

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