Those are features that can be entered in the plus column :-)  

Regards, 
Richard Schuh 

 

> -----Original Message-----
> From: The IBM z/VM Operating System 
> [mailto:[EMAIL PROTECTED] On Behalf Of David Boyes
> Sent: Friday, April 04, 2008 9:48 AM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Re: VTAM R.I.P.
> 
> > I am not sure that you were defending VTAM. All of the interesting 
> > things that you did were done to overcome deficiencies. That seems
> quite
> > the opposite of a defense.
> > Richard Schuh
> 
> On the matter of defense of VTAM, one thing that VTAM (and 
> SNA networking in general) does do well is lend itself to 
> predictive modeling of network behavior. The lockstep model 
> used in SNA is very amenable to standard simulation 
> techniques, which make it very easy to determine the impact 
> of a change, or determine the capacity of the network in the 
> abstract. The "completely define the world" approach makes it 
> much easier to construct full topology graphs and diagnostics 
> tools. SNA also has much better engineered instrumentation 
> for measurement. 
> 
> TCP networks are self-similar, which complicates prediction 
> by a lot, and SNMP is a real hack. It's all we have at the 
> moment, but it lacks a lot for sampling and performance analysis. 
> 

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