routing
Tutorial: Filtering Routes in OSPF Part 2 » Filtering Between Areas Using area filter-list
In our last article on filtering Routes in OSPF we looked at filtering routes within an OSPF area. In this article we will be filtering routes between areas using the area filter-list command. OSPF route filtering is an important concept to be familiar with for any CCIE candidate. We will be looking at the area filter-list command first. Part 3 will then look at some of the more obtuse ways of filtering using the area range and summary-address commands. Part of being a CCIE is knowing multiple ways of configuring the same task…just in case those evil proctors decide to restrict which of those methods you can and can’t do! :)
Tutorial: Filtering Routes in OSPF Part 1 » Filtering Within An Area
In addition to knowing all the different OSPF Network Types and how they relate to Frame-Relay, a CCIE candidate must be familiar with the different methods of filtering routes in OSPF. This two part series of tutorials will focus on filtering routes in OSPF, both within an area and between areas. This tutorial will focus on filtering routes within an area using distribute-lists, access-lists and using a route-map.
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Tutorial: IPv6 Tunnels Part 2 - Automatic 6to4 Tunnels
In our previous article on IPv6 tunnels, we looked at manual GRE and IPv6IP Tunnels in order to provide connectivity for IPv6 networks segregated by an IPv4 network. By tunneling IPv6 over IP, we can migrate our internal networks to IPv6 and still have communication between these networks, even though we are seperated by an IPv4 network. In this article we will be using another method to provide connectivity for IPv6 networks segregated by an IPv4 network: The Automatic 6to4 Tunnel! Mastering IPv6 is not only an important part of a CCIE candidates journey, but will become increasingly important as the global pool of IPv4 addresses diminishes….
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