This post is about frame-relay. Knowing frame-relay is core knowledge for the CCIE exam. We need to have our layer 2 functioning to be able to move on to routing and other tasks. While I do have an OK understanding
Yesterday I did a vol3 lab and one of the tasks was to enable EIGRP on a couple of the switches. I had enabled EIGRP, however I was not getting any routes installed in the routing table. Look at the
Reflexive access-lists is a way of filtering traffic where only return traffic is allowed if it belongs to a session initiated on the “inside”. In a regular access-list we can use the keyword established for filtering but that only looks
This is some notes for the post that I did on conditional BGP advertisement. I found an easier way of seeing the status for the advertise-map. It is available by looking at the neighbor status, look at the following output.
In any IGP there are a lot of timers involved in running the protocol. This post will not describe the hello and dead timers, these are well known. This post describes the less known timers that control how often packets
This post will describe how to do conditional advertising with BGP. In a real life scenario this can be used to only announce routes to your backup provider when your primary link is down. In a lab scenario this can