M3UA: Routing Key and Network Appearance?
Dario Filjar <[email protected]>
| Newsgroups | gmane.ietf.sigtran |
|---|---|
| Message-ID | <[email protected]> |
Hi, I have some difficulties to understand the relation between Routing Key and Network Appearance. At first, it seems that one AS belongs to single network only. This opinion is supported by the following statements from the RFC4666: (section 1.2): Routing Key: ....."Parameters within the Routing Key cannot extend across more than a single Signalling Point Management Cluster". Signalling Point Management Cluster: the complete set of Application Servers represented to the SS7 network under a single MTP entity (Signalling Point) in one specific Network Appearance." (section 3.7.1.) Routing Context: ...."There is one-to-one relationship between an index entry and an SGP Routing Key or AS Name. Because an AS can only appear in one Network Appearance, the Network Appearance parameter is not required in ASP Active message" However some statement support the opposite, that is, AS (represented by Routing Key) in more than one Network Appearance: (section 3.6.1.) Network Appearance: ...."If the Network Appearance is not specified and the Routing Key applies to all Network Appearances, then this Routing Key MUST be the only one registered for the association; that is, Routing Context is implied and DATA and SSNM messages are discriminated on Network Appearance rather than on Routing Context" Here it is explicitly stated that RK can apply to more than one Network Appearance. There is another statement which not only supports the AS-in-multiple-NAs theory, but also possibly (does it?) supports idea of having multiple SCTP Associations between SG and ASP: (section 3.3.1) Network Appearance: ...."Where an SG operates in the context of a single SS7 network, or if individual SCTP associations are dedicated to each SS7 network Context, the Network Appearance is not required" Can you please comment on that? Thanks! Kind regards, Dario __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Sigtran mailing list [email protected] https://www1.ietf.org/mailman/listinfo/sigtran