Aaron's Worthless Words
  • Home
  • About
Sign in Subscribe

area

Summary Post - OSPF Network Statement Order and Matching

When you configure OSPF network statements, IOS orders them most-specific to least-specific then does a top-to-bottom match of the interfaces. It doesn’t matter which order you put them in, the configuration will always be ordered with the longest prefix matches first.  Lab time! I have router R1 with these
jac Jul 9, 2014

A Little OSPF Story

Here’s a story from last week with little of no teaching value. I got a call from one of our business units looking for some routing help.  We don’t usually care about their production networks, but they were seeing some funky traceroutes, so I agreed to try and
jac Sep 12, 2011

OSPFv3 - The Basics

A few hours ago, the last of the IPv4 addresses were allocated by IANA.  Now's the time to learn more about IPv6!  Yesterday, I posted about EIGRP for IPv6, so I think I'll continue the trend by introducing OSPFv3, which is the IPv6 implementation of OSPF.
jac Jan 31, 2011

ROUTE Notes - OSPF Filtering and Summarization

Feel free to correct all this stuff.  Additions are also welcome. Study Questions * How do I keep an area route from reaching a router in that area? You don’t.  That defeats the whole purpose of having the topology database on every router.  If you filtered one route from a
jac Jun 20, 2010

Subscribe to Aaron's Worthless Words

Don't miss out on the latest news. Sign up now to get access to the library of members-only articles.
  • Sign up
Aaron's Worthless Words © 2025. Powered by Ghost