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
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
Conditional BGP, showing status
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.
Timers used in OSPF
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
Conditional BGP advertisement with advertise-map
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
Integrated Routing and Bridging
Sorry for the lack of updates lately but I spent the whole last week skiing and recharging my batteries and now I’m back fully motivated to continue my path to the lab. This time we will be talking about Integrated
Lost in transit
I have registered a domain for my blog. It is still hosted at WordPress but I wanted an easier address to remember. From now on you can also reach my blog via http://lostintransit.se or http://www.lostintransit.se
Filtering RIP routes with an offset-list
As you all know RIP is a distance vector routing protocol and that gives us a lot of options when doing filtering. This time we will look at a feature that is not widely known, the offset list. Assume that
Flash cards updated
I have updated the flashcards with some questions on FHRP, Syslog, EEM, ZBF and NTP. There is over 200 questions in the bank now. As usual download the file from here.
OSPF lab notes
This post is based on notes from my practicing OSPF vol1 labs. I want to have them saved for later reference but I also think that this post can help others and clear some of the confusions of OSPF. Lets