[comp.protocols.ibm] More than one CTC per VTAM SSCP

SMITH@GECRDVM1.BITNET (Don Smith) (11/19/88)

I want to reduce the traffic load over my single CTC to another VTAM
SSCP.. Is there any restriction on adding another CTC to both of my
VTAM domains for load balancing over two channels... Any ROUTING
issues that I need to consider (i.e COS etc.)
Thanks for whatever info you can give..
Don Smith
GE-Research and Development
NOTE: These are REAL CTC's

P85025@BARILVM.BITNET (Doron Shikmoni) (11/21/88)

>I want to reduce the traffic load over my single CTC to another VTAM
>SSCP.. Is there any restriction on adding another CTC to both of my
>VTAM domains for load balancing over two channels... Any ROUTING
>issues that I need to consider (i.e COS etc.)

There is only one restriction: it can't be done.

You can't connect 2 SSCPs with more than one "channel" TG.
If you try to define two CTCAs, both of them are being defined
as TG1, so only one of them can actually be working at a certain
point in time. (Incidentally, the funny thing is that under most
circumstances you *will* be able to define and sometimes even
ACTivate both CTCAs - but rest assured only one of them really works..
I worked like this for over two months, being positive that I'm making the
best out of my two CTCAs - until an IBM SE that insisted on "it can't
be done" forced me to check - and guess what I found, to my - or IBMs
- disgrace..).

Note: this only talks about connecting of two specific SSCPs with
more than one channel-attachment TGs. Obviously one SSCP can talk
to more than one CTCA - if their "other ends" are connected to
different SSCPs.

Doron