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.

Blog: Mock Lab 4 is the spawn of Satan!

Mock Lab 4 is the spawn of Satan! lol.

*sigh*. I know I stuffed that one up. I just finished it. Didn’t have much time to check anything. I got full connectivity, and answered most things. I think I got something fundamentally wrong in the IGP section. I got to the end, and i was utterly exhausted. I’m sure I made mistakes, but I will see how it goes.

Multicast: What is the difference between an igmp filter and an igmp access-group?

After doing IE Mock Lab 5, and analyzing it over the last few days, I had an epiphany with regards to an igmp filtering question. The question required you to limit users joining a certain multicast group, and also place a limit on how many groups users in that vlan can join. I immediately thought “Oh cool, no problem ip igmp access-group with a standard access list, and an ip igmp limit and we are good to go! This stuff is easy”. Brrr! Wrong! :)

Tutorial: How to use Cisco MQC & NBAR to filter websites like Youtube

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