Re: single/double exchange mode doubt
"Brian F. G. Bidulock" <[email protected]>
| Newsgroups | gmane.ietf.sigtran |
|---|---|
| Organization | http://www.openss7.org/ |
| Message-ID | <[email protected]> |
Ankit, Ankit Kumar Sharma wrote: (Thu, 05 Jul 2007 15:43:53) > > Hi all, > I have a doubt over single/double exchange mode. When we say > single/double exchange mode then do we mean: > a) it is a property of ASP. For all ASs served by this ASP, my mode > would be either single or double exchange, but not both. ASPs do not do single or double exchanges: IPSPs do. > b) it is a property of AS. For one AS, an ASP could behave as in > single exchange and for other it could behave as a double exchange. No. > Please look at the example below: > ---------- ------------ > |ASP 1|----------------------|ASP A | > ---------- ----------- > ASP 1 is serving AS 1 with routing context 1. ASP A is serving AS A, > with routing context 1. This configuration is running fine in single > exchange mode. > Now, I want to add one more AS at ASP 1, say AS 2. Routing context of > this AS would be 2 and I want to run it in double exchange mode. Do > someone see any discrepancy in this configuration? ASPs do not communicate directly with each other in this fashion: IPSPs do. The RFCs state that both IPSPs must operate in the same mode for all messages. --brian -- Brian F. G. Bidulock [email protected] http://www.openss7.org/