Lab Challenge EIGRP
This is a Lab Challenge only for EIGRP, based on the request from one of the users at the networking-forum.com. The base configuration is not too complex and is limited to five routers but it got some nice stuff to look after. I hope you enjoy it 
If you want to do the lab and got questions, just drop me a line.
As with the other Lab in the end you have to have full connectivity between all routers and their interfaces.
Multicast Rate-Limit
During the preparations for multicast I stumbled across the ip multicast rate-limit command. The command itself is nothing special but the logic on how to define which source and multicast groups to rate-limit is somehow, at last if you got the same logic as myself.
So to start with, for me if I have to define something based on a source (multicast source in this case) and a destination (multicast group(s)) I first specify the source and afterwards the destination. Sounds logic or not? I dont know but I hope I do not belong to a small group of persons with a strange logic, cause the people that wrote the code for the command have a different one 
Challenge Labs
Ok given that the one Challenge Lab I have on the blog got the 2nd most hits (after Get the Cisco configuration over SNMP) I think it might be time for another one but I’d like to know what you are looking for, given Im a CCIE in Routing and Switching I’d like to know what topics you’d like to see covered in a Challenge Lab. Another thing is I did not post any solution for that lab yet cause I did not want to spoil the solution, do you want to see a solution for it? (there is always more then one solution to fix a problem )
Please let me know what you think.
Book Review: Routing TCP/IP Volume I 2nd Edition
Routing TCP/IP Volume I 2nd Edition (written by Jeff Doyle) was the first book for my CCIE preparations I’ve read from the first to the last page (except the IS-IS chapter). Some people I know call this book the routing bible
Its about interior routing protocols (distance vector and link state) and also covers redistribution, filtering and route-maps.
Wrong/Unknown Remote AS Number
Lately I got asked how to find the remote AS number for a BPG peering, especially if you do not have access to that remote router. In real life I’d say you should know which AS’ you peer with but in the Lab it might be a question to find out the remote AS.
OSPF Network Command
The OSPF network command is used to activate OSPF on the specified interfaces. Specifying an interface with the command will include the interface into the OSPF routing process. On broadcast and point-to-point network types, the router will automatically start the neighbor discovery process by sending hello packets to the AllSPFRouters multicast address (224.0.0.5) after an interface has been integrated into the OSPF process.
If there’s another OSPF router on that link and their Hello packets match, they will try to form an adjacency but that’s another story.
About
Im a network engineer working for an international medical company based in Basel, Switzerland. I began my professional life in 2000 after 4 years of an IT apprenticeship. I started as the Network Management System responsible with quite a lot other of other tasks inside the Cisco networking field. In 2005 I changed to my current employer where I changed my field of knowledge from part NMS part Networking to full time Networking. I also started to educate myself deeper into networking. After passing the CCNA and CCNP exams I wanted to go further with my education and took the CCIE R&S track instead of doing a school with lots of stuff Im not interested in
I started the CCIE journey in August 2007 with the first of 5 workshops at the Cisco Network Academy in Rapperswil and passed the CCIE in Brussels at 07th of May 2008.
During that time I wrote a lot of documents to keep the stuff I learned and I thought it might be an idea to make it public so it might help other people on their path through the Cisco Certifications. I hope this site gets useful not only for CCIE candidates but also for other networking professionals on their search for knowledge.
If you have any questions or want to contact me, please drop me a line to pashtuk at gmail.com
