Re: Re: [JXTA discuss] NEW Re: [JXTA discuss] Mobile IP

Hi mohamed abdelaziz

I still feel a bit confusing about your reply. 
>A peer (jxme, or otherwise) can be mobile about the network, without 
>having to worry about it's new address.
Does peer in jxta-java and jxta-c can enjoy mobiliy as well? (relay mode or http directly)
 
>if a peer changes it's physical or virtual endpoint, such  change is reflected within the access point advertisement and is automatically re-resolved when connection failures occur
Does peer can be re-connected sucessful, in the case of jxta-shell without relay, if I changed IP address directly without modifying it in PlatformConig.

thanx very much


	

======= 2005-07-18 15:21:00 您在来信中写道：=======

>Giorgos,
>
>A peer (jxme, or otherwise) can be mobile about the network, without 
>having to worry about it's new address. Addressing within the JXTA 
>network is by a peer's endpoint, which is resolved to an access point 
>advertisement (an APA describes a peer's physical and virtual 
>endpoints), if a peer changes it's physical or virtual endpoint, such 
>change is reflected within the access point advertisement, and is 
>automatically re-resolved when connection failures occur.   In relayed 
>situations where the relay remains the same, a change in physical 
>addresses has no effect, whereas in direct connections, or when a change 
>to a different relay occurs, such change would manifest itself as slower 
>than usual delivery of messages to the mobile peer, or in an exception 
>when attempting to send more than 3 messages before the new Access Point 
>Advertisement is resolved.  Also keep in mind that peer routes are 
>resolved by a peer's advertisement or access point advertisement (via 
>discovery), through the EndpointRouter resolution protocol, of through 
>forward routes which are part of delivered messages.
>
>
>Cheers,
>Mohamed
>
>
>
>
>Giorgos Georgakoudis wrote:
>
>>I read the paper but I did not get any clear answer. Ok, here is a scenario:
>>
>>Someone is using a JXTA enabled PDA communicating in P2P JXTA network.
>>Moving in the city, the PDA's IP changes from X to Y. What happens?
>>
>>Guess 1: The Peer Advertisement that the PDA has issued still exists (as the
>>timeout has not expired) so when other peers want to communicate with this
>>peer they find a "new" route. There is some delay though. ( Will there be
>>any missing packets granted they were routed according to the "old" route?
>>Is there any caching of messages in the relay route?)
>>
>>Guess 2: The peer is considered disconnected so it issues a new Peer
>>Advertisement to manifest its existence in the JXTA universe. All previous
>>communication is considered disconnected.
>>
>>Giorgis Georgakoudis
>>
>>----- Original Message -----
>>From: "Peter Fagerlund" <[email protected]>
>>To: <[email protected]>
>>Sent: Saturday, July 16, 2005 3:14 PM
>>Subject: Re: [JXTA discuss] Mobile IP
>>
>>
>>It do not affect the jxta protocols, the mobile is recognised through a
>>jxme-proxy relay being the window in to the jxta world.
>>
>>http://www.jxta.org/project/www/docs/JXTA4J2ME.pdf
>>
>>/p
>>
>>On 16 Jul 2005, at 10:24, Giorgos Georgakoudis wrote:
>>
>>  
>>
>>>Hello,
>>>
>>>
>>>I would like to ask what happens in jxta when we have a mobile peer
>>>that is moving through networks thus having a mobile IP address. How
>>>does that affect the jxta protocols? Is the peer considered dead and
>>>reconnected or otherwise? If there is any documentation mentioning
>>>this or any other concepts please let me know.
>>>
>>>Giorgis Georgakoudis
>>>    
>>>
>>
>>
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　　　　　　　　马里
　　　　　　　　[email protected]
　　　　　　　　　　2005-07-19