We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is Why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 641 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

 

370 New Members signed up the last 30 days!

satisfaction-guaranteed

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags:


Forum Replies

  1. Hi Rene

    Question, should the following sentence under Within Network say IPv4 rather than IPv6?

    “The destination IPv6 address network bits are derived from the BR IPv6 address that the router knows.”

    Also how does 100:10::1 get mapped to .1 on the IPv4 side?

    And on Outside Domain, why is the IPv4 Source the IP of CE2 (192.168.1.2), when the ping is initiated from Host 1 behind CE1? Should it be 192.168.1.1?

    Thanks

  2. Hi Chris,

    Thanks, that last line shouldn’t be there so I removed it.

    The IPv6 prefix has this format:

    https://networklessons.com/wp-content/uploads/2018/02/ipv6-6rd-prefix-format.png

    Now take a look at this address:

    https://networklessons.com/wp-content/uploads/2018/02/ipv6-6rd-prefix-format-common-bits.png

    2001:DB8 is the ISP prefix, what comes next is the IPv4 address.

    192.168.1.1 in hexadecimal is C0A8:0101, but I don’t have to embed the entire IPv4 address. I can forget about 192.168.1. (

    ... Continue reading in our forum

  3. Thanks Rene, any chance you could provide the configs at the end? I guess I’m wondering how the BR knows about the “General prefix” when you didn’t configure it.

    BR#show tunnel 6rd
    Interface Tunnel0:
    Tunnel Source: 192.168.1.3
    6RD: Operational, V6 Prefix: 2001:DB8::/32
    V4 Prefix, Length: 24, Value: 192.168.1.0
    V4 Suffix, Length: 0, Value: 0.0.0.0
    General Prefix: 2001:DB8:300::/40

  4. Hi Chris,

    Just added them. The general prefix is also configured on the BR.

    Rene

  5. Any chance you could provide an example for “within domain”, but with an IPv6 internet host generating the traffic? Does the native IPv6 host route traffic to the 6RD gateway?

1 more reply! Ask a question or join the discussion by visiting our Community Forum