This blog was originally started to better help me understand the technologies in the CCIE R&S blueprint; after completing the R&S track I have decided to transition the blog into a technology blog.

CCIE #29033

This blog will continue to include questions, troubleshooting scenarios, and references to existing and new technologies but will grow to include a variety of different platforms and technologies. Currently I have created over 185 questions/answers in regards to the CCIE R&S track!! Note: answers are in the comment field or within "Read More" section.

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Friday, April 23, 2010

Question 13

What does an IPv6 address layout look like?

3 comments:

Packets Analyzed said...

32 character hexadecimal
2032:0000:130A:0000:0000:08F9:768B:123A

Leading zeros in a field can be dropped
2032:0:130A:0:0:8F9:768B:123A

Fields of successive zeros are represented as ::, but only once in an address
2032:0:130A::8F9:768B:123A
2032::130A::8F9:768B:123A <--- Invalid
FF01:0:0:0:0:0:0:1 = FF01::1
0:0:0:0:0:0:0:0:1 = ::1
0:0:0:0:0:0:0:0:0 = ::

Terry Edwards said...

I know that you can use IPv4 addresses as UNC paths but how is this done with IPv6?

Obviously it can't be done the same way because the colon (:) is an invalid character in UNC paths (as least from the Microsoft point of view).

Packets Analyzed said...

Well I gave it a try and your right MS UNC paths do not like the colon.

To overcome this MS has registered a second level namespace ".ipv6-literal.net" which is appended to the end of the address. This namespace is resolved by MS software and there is no need DNS.

Here is an example

IP address of the host that you want to map a drive from using IPv6 - In my case fe80::410:bc5c:be9b:72ae. You have to replace the : with - and append the ".ipv6-literal.net" namespace.

\\fe80--410-bc5c-be9b-72ae.ipv6-literal.net\mediacenter

Works perfectly - remember the :: would be replaced by --

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