Re: Query Regarding M2PA Rfc 4165

Amit,

Amit Ray wrote:                                                                       (Fri, 21 Oct 2005 20:46:10)
> 
> Hi Brian,
>        I'd like some clarification on the Processor Outage mechanism
> defined in RFC 4165.
> 
>   What should be the behavior in the following scenario:
> 
> 1. Let us suppose there are two sides A and B. A and B both are in LPO
> condition. Hence both the sides are in LPO and RPO simultaneously.
> 2. Now LPO ends at side A. It will send a LPO Ended message to peer.
> 3. Now what should be the behavior at side B? As it is still in LPO, should
> not send a LS Ready message because it has some buffered data which is
> still not  notified to the application(as per the buffering mechanism in
> LPO) . Hence correct re synchronization of FSN and BSN is not possible at
> this moment.

Why not?  B can send LS Ready.

Then I suppose there is no problem.

--brian

> 4. RFC 4165 says that if one end is in RPO, it should continue sending user
> data  messages and other end should buffer it. It also says that  "M2PA
> SHALL NOT resume   transmitting User Data messages until it has sent the
> Link Status  Ready message".
> 5. Hence in this case neither A nor B can send a packet as neither end
> sends a  LS Ready message. But as A is in RPO, it can continues sending
> and receiving  user data messages and B should buffer  it.
> 

-- 
Brian F. G. Bidulock
[email protected]
http://www.openss7.org/