Re: [M3UA] Action on Receipt of ERROR
"Brian F. G. Bidulock" <[email protected]> Thu, 17 Mar 2011 16:26:38 -0600
| Newsgroups | gmane.ietf.sigtran |
|---|---|
| Organization | http://www.openss7.org/ |
| Message-ID | <[email protected]> |
Simon, I agree with Michael in this case. The ASP is not even following the required (MUST) ASP Down procedures. No amount of requirements placed on error message handling would have fixed this. The ASP is simply broken. --brian Sporton, Simon, VF-Group wrote: (Thu, 17 Mar 2011 22:42:15) > Hi Chris, > > I agree, certainly a number of serious 'mis-implementations' were > discovered when we looked into this problem! These have been taken up > with the vendors and are being resolved. What I'm asking here is if > there is any guidance the RFC can provide to bring error handling > implementations closer together... at the moment it seems to be open > season for each vendor to implement the logic they think is right, > which can lead to unexpected consequences when interworking > with another stack. > > Our understanding was that the ASP was sending ERROR (Unexpected > Message) because it was receiving DATA while in the ASP-DOWN or > ASP-ACTIVE states. I agree, the RFC says the state of remote ASPs is > maintained in the SGP, but I'd assume each ASP must maintain its own > state even if not formally stated in the RFC. > > Simon > -- Brian F. G. Bidulock [email protected] http://www.openss7.org/