RE: IPSP Single Exchange Mode

MyHanh,

The latter is true.

 Thanks,
 Tolga

-----Original Message-----
From: Bui, MyHanh [mailto:[email protected]]
Sent: Friday, August 18, 2006 12:51 PM
To: [email protected]
Subject: [Sigtran] IPSP Single Exchange Mode


Hi All,

In [RFC3331Bis page 99] is the following

Single exchange

               IPSP-A                           IPSP-B
                 |                                |
                 |-------------ASP Up------------>|
                 |<----------ASP Up Ack-----------|
                 |                                |
                 |<------- ASP Active(RCb)--------|  RC: Routing Context
                 |-----ASP Active Ack (RCb)------>|      (optional)
                 |                                |
                 |                                |
                 |<=========  DATA (RCb) ========>|
                 |                                |
                 |<-----ASP Inactive (RCb)--------|  RC: Routing Context
                 |----ASP Inactive Ack (RCb)----->|      (optional)
                 |                                |
I highlighted the Optional to ask if this means the ASP AC ACK message is
optional or the Routing context parameter is optional?
If the former is true then why it can be optional? No need to start timer
after sending out ASP AC and traffic can start right away?
I have no question if the latter is true.

MyHanh







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