Re: [Mip4] Query For error code from HA ..
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Re: [Mip4] Query For error code from HA ..

Title: Message
 
http://www.ietf.org/internet-drafts/draft-ietf-mip4-experimental-messages-02.txt
 
This shld help u!
----- Original Message -----
Sent: Tuesday, March 01, 2005 1:19 PM
Subject: Re: [Mip4] Query For error code from HA ..

Hi arun,
I got ur scenario. see section 6.4 RFC 3344
"
 128-192    Error Codes from the Home Agent
"
Cisco's behavior is quite right!
----- Original Message -----
From: Arun H S
Sent: Tuesday, March 01, 2005 1:18 PM
Subject: RE: [Mip4] Query For error code from HA ..

do U have a Cisco Rtr there ... U can chk out ... he sends back code 128 (reason un-specified) as the registration reply
-----Original Message-----
From: Radhakrishnan Suryanarayanan [mailto:rkrishnan.s at samsung.com]
Sent: Tuesday, March 01, 2005 01:09 PM
To: HS_Arun at huawei.com
Subject: Re: [Mip4] Query For error code from HA ..

In such a case the MN/FA can never be reached even to intimate the error. The packet is just discarded at the HA.
FA/MN does retransmission and The Registration fails! 
----- Original Message -----
From: Arun H S
Sent: Tuesday, March 01, 2005 1:00 PM
Subject: RE: [Mip4] Query For error code from HA ..

For the Home Agent, I think it dows not matter whether the "COA" is a CLCOA or a COA
-----Original Message-----
From: Radhakrishnan Suryanarayanan [mailto:rkrishnan.s at samsung.com]
Sent: Tuesday, March 01, 2005 12:42 PM
To: HS_Arun at huawei.com
Cc: mip4 at ietf.org
Subject: Re: [Mip4] Query For error code from HA ..

Hi arun,
  For further understanding your problem can you please clarify the following:
  Is the CoA address of the FA (in case registration is being done via FA) or that MN (co-located CoA)?
 
Regards
Radhakrishnan
----- Original Message -----
From: Arun H S
Sent: Tuesday, March 01, 2005 11:18 AM
Subject: RE: [Mip4] Query For error code from HA ..

Hi,
 
Sorry, I guess the problem was not understood properly.
 
 
    The problem in question is as follows:
 
    __________                         ____________
    |                | HA1                  |                    |
    |    HA        | ============|        FA        |
    |                |                 FA1  |                    |
    -----------------                         ----------------------
                                                        ||   COA
                                                        ||
                                                        ||
                                                ___________
                                                |                  |
                                                |        MN     |
                                                |                  |
                                                --------------------
 
Now when MN sends an RRQ with Care-of-Address as COA, to Home-Agent Address, HA1, the Registration is successful because the IP addresses HA1 and FA1 are routable. However, since the tunnel that is created is between the IP addresses HA1 and COA, at the Home Agent, there may not be any route in HA for the IP Address COA.
In such a scenario, what type of error-code should the Home Agent send back to the Mobile Node.
 
PS: In such a scenario, the Registration will be successful, however the packet forwarding to the Mobile Node will fail since there is no route to the COA at the Home Agent.
 
Regards,
Arun
 
 
-----Original Message-----
From: mip4-bounces at ietf.org [mailto:mip4-bounces at ietf.org] On Behalf Of Radhakrishnan Suryanarayanan
Sent: Friday, February 25, 2005 05:52 PM
To: keshavak at huawei.com; mip4 at ietf.org
Subject: Re: [Mip4] Query For error code from HA ..

Hi Mr.Keshav,
If you are talking about Registration reply, HA will recv ICMP Destination unreachable (from intermediate routers) for CoA of MN.
Where is the question of HA sending any error msg to MN if MN's CoA in unreachable?????
 
Regards
Radhakrishnan
----- Original Message -----
From: keshav
Sent: Friday, February 25, 2005 5:32 PM
Subject: [Mip4] Query For error code from HA ..

Hi,

            I would like to know is there any error code that HA has to send to MN if the

            Care of address of the MN is not reachable during registration?

           

           

 

 

           

Thanks & regards,

Keshava

 

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