One serious problem when doing "debug ipv6 inspect" may cause the router to crash. In IOS 15.0 there are several caveats that you should know about. I find it useful to go through the release notes and caveats for new IOS versions I am planning on deploying to make sure I am not going to run into a problem that someone has already encountered. OSPFv3 Fast Convergence-LSA and SPF Throttling IPv6: Multicast Address Group Range Support In IOS release 15.0 there are three new IPv6 features. There is also a document that covers the " New Features in Cisco IOS Release 15.0(1)M". All of the latest IPv6 commands can be found in the IOS 15.0 " IPv6 Command Reference". You can learn about how to configure the latest IPv6 features by perusing the IOS 15.0 " IPv6 configuration guide". However, the documentation for Cisco IOS release 15.0 is already available so we can start to see what to expect. I haven't been able to download the IOS yet for the routers in my lab but hopefully that is coming soon. To avoid all those sticky issues, Cisco probably decided to jump clear to 15 (which still is the next release following 12 but not to be confused with the 13th version). Maybe it has something to do with 13 being considered an unlucky number and the fact that in many buildings that don't have a 13th floor the 14th floor is really just the 13th floor. Don't ask me why Cisco jumped from 12 to 15. Now the IOS documentation set can barely fit onto a DVD.Ĭisco has just released IOS 15.0. That seems like a long time ago because it was. It was during the transition from 11.3 to 12.0 that Cisco stopped printing the entire IOS documentation set. It filled up an entire shelf of my bookcase. I had a complete set of IOS 11.2 documentation back when I was studying for my CCIE lab. The size of the documentation grew quickly with the size of the IOS firmware image. Back then the entire documentation for IOS was only a few small books. In 1995 I took my first Cisco class called Introduction to Cisco Router Configuration (ICRC) on IOS 10.3. I started my career learning about Cisco IOS version 9.11 back in 1994. While these features won't likely be implemented in production networks right away, seeing these new IOS features helps us plan for our future networks. When it comes to software, I always want to learn about the latest Cisco IOS features. The advancements in the industry come in the form of both hardware and software. One of the things that I enjoy about the computer networking industry is that there are always new things to learn and share. Like you, I always like keeping up on the latest technology. Based on the IPv6 features that have come out in IOS 12.4T we should expect many new IPv6 features in IOS 15.0M and IOS 15.0T in the coming years. However, it only has a few new IPv6 features for multicast and OSPFv3. This new IOS version has many new advancements. You may have heard that Cisco has released IOS version 15.0.
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