On Oct 26, 2010, at 1:47 PM, Bruce Lowekamp <[email protected]> wrote:

> Yes, using PING first introduces some corner failure cases that simply 
> routing the ATTACH to the resource-id of JP does not.
> 
> Section 9.5  doesn't actually conflict with the notion that the initial 
> attach is routed to the JP's resource-id, though.  

> 9.5 simply says that if peer A learns of peer B through peer C, it needs to 
> send the ATTACH through peer C. 

This is a MUST or should be IMO.

> This is simply because A may not have connectivity with B other than through 
> peer C, such as when an overlay has been partitioned and is now healing.  The 
> initial ATTACH is essentially handled the same way, because it is routed via 
> the BP.
> 
> Bruce
> 
> On Mon, Oct 25, 2010 at 6:56 PM, <[email protected]> wrote:
> 
> Yes, these methods are also ok. 
> It appear to be inconsistent between section 9.5 and section 11.  I think the 
> method in section 11 is more efficient. 
> 
> 
> 
> 
> Frederic-Philippe Metz <[email protected]> 
> 发件人:  [email protected]
> 2010-10-25 15:36
> 
> 收件人
> [email protected]
> 抄送
> 主题
> Re: [P2PSIP]        答复:  Clarification of initial attach procedure
> 
> 
> 
> 
> 
> Ok. So JP either can
> a) Send a ping to the resource id+1 (as the node_id of JP) to get the node-id 
> (in the RELOAD message signature of the Ping answer) to then perform an 
> attach to this node_id (this is mentioned in 9.4) or
> b) directly form a resource-id+1 (as JP's node_id) and send an attach.
> 
> Do you agree ? 
> 
> Cheers,
>    Frederic
> 
> On Mon, Oct 25, 2010 at 9:04 AM, <[email protected]> wrote: 
> 
> I think JP is correct. The Node of JP is as Resource-ID in Attach. Before 
> Attaching, a Ping message is redundant. 
> 
> There is the description above the second dirgram in the draft: 
> "It sends an Attach to the Resource-IP AP+1, which gets routed to NP." 
> 
> "Resource-IP" should be "Resource-ID". 
> 
> 
> 
> Frederic-Philippe Metz <[email protected]> 
> 发件人:  [email protected]
> 2010-10-23 15:31
> 
> 
> 收件人
> [email protected]
> 抄送
> 主题
> [P2PSIP] Clarification of initial attach procedure
> 
> 
> 
> 
> 
> 
> 
> Hi all,
> 
> I've got a question resp. page 123:
> 
> The first attach in the call flow diagram states JP as the
> destination. I think it should be AP ? JP has got the node-id of AP
> from a previous ping, right ? If that assumption is not right, the
> attach to node-id JP will fail, because 5.5.1 states that the attach
> to a node-id which isn't reached will fail.
> 
> Cheers,
> Frédéric 
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