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| iPhone screenshot. |
The result, many ISPs would filter these bogon routes lest they leak out onto the Internet.
Now, to cut a long story short, I've noticed my iPhone now has an IP from this range. Time will tell if there are any connectivity issues.
Wednesday, 17 November 2010
In the 1/8 block.
Some while ago I noticed that APNIC had been allocated the 1.0.0.0/8 block. This was a cause for concern as it has been one of the more well know bogon prefixes. These are address blocks that may be used within organizations instead of the rfc1918 address space, e.g. 10.0.0.0/8. I've spoken people who have done this and the usual reason is to avoid issues with others who might be using rfc1918 address space.
The result, many ISPs would filter these bogon routes lest they leak out onto the Internet.
Now, to cut a long story short, I've noticed my iPhone now has an IP from this range. Time will tell if there are any connectivity issues.
The result, many ISPs would filter these bogon routes lest they leak out onto the Internet.
Now, to cut a long story short, I've noticed my iPhone now has an IP from this range. Time will tell if there are any connectivity issues.
Tuesday, 16 November 2010
TSHOOT Books
Yay, today I finally got my foundation learning guide for TSHOOT. I discovered recently that you can get two types of Ciscopress books, Exam certification guides which are all about passing the exam, and the Foundation Learning guides which are more like a course and give you much more depth.
I already had the certification guide so I thought I should really have the foundation learning guide (after failing SWITCH) so I ordered it from Amazon but as usual when you are waiting for something it takes forever to turn up.
So today, some 19 days later it finally arrived on my desk so now for some hard core reading as my exam is less than 1 month away!!
Wish me luck!
I already had the certification guide so I thought I should really have the foundation learning guide (after failing SWITCH) so I ordered it from Amazon but as usual when you are waiting for something it takes forever to turn up.
So today, some 19 days later it finally arrived on my desk so now for some hard core reading as my exam is less than 1 month away!!
Wish me luck!
Monday, 1 November 2010
CCNP SWITCH Passed
Yes, finally I managed to pass CCNP SWITCH exam.
Lesson to be learned, make sure you read all those tiny sections at the back of the book that mention exam updates.
It turns out that between publishing of the official certification guide and my sitting the exam the first time around, Cisco had updated the exam curriculum. As a result, the book author had written extra content as a PDF to be downloaded from the publishers website.
If I had know that before my first attempt, perhaps I would have passed, who knows. As it is I took advantage of several other aids to study for my second attempt and I guess it all worked as I passed.
Only one more exam for CCNP, that's TSHOOT booked for Dec 14th!
Wish me luck.
Lesson to be learned, make sure you read all those tiny sections at the back of the book that mention exam updates.
It turns out that between publishing of the official certification guide and my sitting the exam the first time around, Cisco had updated the exam curriculum. As a result, the book author had written extra content as a PDF to be downloaded from the publishers website.
If I had know that before my first attempt, perhaps I would have passed, who knows. As it is I took advantage of several other aids to study for my second attempt and I guess it all worked as I passed.
Only one more exam for CCNP, that's TSHOOT booked for Dec 14th!
Wish me luck.
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