Re: Need ANSWER 4 these QUERIES !!

Mahantesh,

Please see comments below...

Mahantesh wrote:                     (Wed, 15 Nov 2006 17:38:38)
> 
>    Hi there,
> 
>     1.      What is a Routing Context [RC] and why it is required, when a
>        Routing Key [RK] serves the purpose?

Because an RK is a large thing with difficult decoding and the
RC is a simple 32-bit number.  Because RC is used in every
message in the main data flow, it increases peformance and
throughput.


>     2.     Whether 2 Application Servers [AS] can have the same RK?

No they cannot.  There is a 1:1:1 relationship between AS:RC:RK.
Grep the RFC for unique.

>     3.     What's the main purpose of Network Appearence [NA] ?

To define the format and numbering space for signalling point
codes when the SG supports multiple signalling point code
formats or numbering spaces and the 32-bit signalling point code
value is not sufficient to distinguish between two signalling
points.  See definition RFC 4666 bottom of page 7.

>     4.     How many Associations are possible between SG and AS?

Zero.  An SG does not form associations to an AS: SGPs form
associations to ASPs.

Between an SGP and an ASP?  Zero or one.  Two is not permitted.
If a second connection is attempted to an SGP and the SGP knows
that it is the same ASP (from the remote or local IP address(es)
and port and configuration) it should refuse the connection.  If
it cannot determine the ASP identity (or uniqeness) from these
parameters, it will require an ASP Id.  If a ASP Up is received
on two associations with the same ASP Id, the second should be
refused with error Invalid ASP Id.  Note that an ASP or an SGP
is not a piece of hardware or an IP host (although they are
drawn that way in the examples), it can be a process or
sub-process within a host.  As such, one host can represent
multiple ASPs, but each must have only one association to each
SGP.

>     5.     How many ASPs can be in an AS? and why?

Zero to unlimited.  Because no minimum or maximum is placed on
this number by the RFCs.  For a loadsharing AS, there is usually
a practical limit to the number of ACTIVE ASP in an AS (the range
of the load sharing key, but, depending in the loadsharing key
that number could still be very large).

--brian


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