Sometimes we have a need for debugging and Cisco has a lot of options for debugging, this is one of the things why I definately prefer Cisco to HP or other network vendors. I did some vol2 labbing yesterday and
First round of vol2 started
Did my first round of vol2 tonight and man it was brutal. It’s a total different thing trying to get all protocols running together nicely than running them each separately. Also when doing entire scenarios you have to think if
MPLS added to flash cards
I’ve added some MPLS and MPLS VPN’s to the flash cards. The flash cards are covering a pretty wide base by now and I have finished the vol1 labs from INE (not all of them) and as I go through
Vol1 finished
I’ve finished the Vol1 labs following the schedule from INE. That is about 25% of all the Vol1 labs. Will start doing the vol2 soon. I’ll be adding content to the flash cards with MPLS and MPLS VPN questions today
Flash cards – multicast added
Added some multicast content to the flash deck. There is now a total of 151 questions in the deck. The next section that will be added when I have finished the labs is MPLS VPN. As usual, the deck is
Troubleshooting multicast – RPF failure
In unicast routing we are interested in how to forward packets to their destination. In multicast routing we are interested where the source came from, multicast packets need to pass a RPF (Reverse Path Forwarding) check. Packets that are received
Multicast session booked for tonight
Going to do a rack rental tonight since I’m going to do multicast labs. From what I’ve heard Dynamips has some issues with multicast, not sure if it still has issues but I’ll do a rack rental to not spend
IPv6 content added to flash cards
I have added some IPv6 content to the flash cards. Next up is multicast. Will add more advanced content and more content as I start with the vol2 labs. I now only have multicast left from the vol1 labs (following
BGP troubleshooting – route not installed
Sometimes prefixes in BGP do not get installed into the routing table, if the route is also in an IGP that might be a reason but then a RIB-failure would be indicated. This scenario shows another possible source of problems.
Educational IOS
Greg at Etherealmind has a call for educational IOS up on his site. It had to be redone because the signatures were lost from the first round. Dynamips is great but it has it’s issues and takes a lot of horsepower.