Running Dynamips takes a lot of CPU and memory and running a full CCIE topology on a Windows machine can be tough. I do a lot of studying on my commute to my job and I run some smaller labs
First troubleshooting session done
I did my first troubleshooting session tonight. I was worried about only having 2 hours alotted but time was the least of my concerns. I finished at 70 minutes so almost an hour to spare. I did quite OK, 60%
Creating an IOS menu
I did some labbing yesterday and I got a task that said I should create an IOS menu for NOC users so that they can ping and traceroute without needing to know the CLI. I had never used this feature
Flash cards updated
The flash cards have been updated. There is now a total of 222 flash cards. Download it as usual from here.
Understanding frame-relay
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
Don’t forget ip routing on switches
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