[support] [supprt] How do I get the CN address?

[rohit gupta]

Hi,

Scenario you are asking is that of route optimization.  we can maintain
authorized CN's list in the configuration file of MR/MN and it updates in
Home agent  the CN's address by appending a extension containing CN's
address in the registration request. So that HA sends binding update
messages to the CN's mentioned in the registration request during every time
MR/MN registers. CN make direct tunnel to the POA instead of sending packets
to Home Agent.



-> another thing which could be done & is also a integral part of Mobile
IPv6. That MR/MN picks up the CN's IP address from any running/establish
session & update the CN's communicating with its current
point-of-attachement whenever it changes its POA.


Regards,

Rohit Gupta.


On Tue, Mar 9, 2010 at 3:01 PM, tony chen <aoc90058 at gmail.com> wrote:

> hello! everyone!
>
>
> I am wirting a NEPL-like program, but I have a problem about communication
> between CN and MN.
> The following figure, Time1 and Time2, is the motion I consider.
>
> Time1 :
> CN------HA---(Internet)--AR
>     │
> MR------┘
>
> MR is under the home network, so MR use a home address in the home network
> to communicate with CN.
>
> Time2 :
> CN------HA--(Internet)--AR
>             │
>             └--MR
> The MR do handover from home network to AR(foreign network), and MR gets a
> CoA in foreign network. At the time, MR must tell CN about MR's CoA, so CN
> can commucation directly with MR instead of transporting by HA.The quetion
> is how do I get CN's address and continue to communicate with CN.
>
> Thanks everybody!
>
>
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