Re: Communications Controller for Linux on Z/Series

On 15/06/2005, at 3:58am, Tony Harminc wrote:

> I think the bigger problem is that the whole thing is a licensed IBM
> product, mostly OCO, *and* it seems to require installation of an NCP
> load module, which is itself licensed code.

The NCP load module is not a problem, as you should already be  
licensed for NCP and SSP on your z/OS system -- after all, it's the  
3745s that you already have that you want to replace with CCL, right?

Tony is correct in that CCL is a licensed product; as we all know  
getting a license to run IBM mainframe code on Hercules is, well,  
difficult. ;)

For the curious, I know that an NCP on CCL (under SLES 9 SP1) and  
VTAM in z/OS v1r4, both running under z/VM on a FLEX/ES machine, will  
chat quite happily through an Ethernet switch or crossover cable.   
Running the CCL part under Hercules would in theory not be a problem  
-- but it would be a good test of the accuracy of Hercules' LCS  
emulation :)

Bear in mind that depending on how much traffic your 3745s handle,  
CCL can be hungry for resource -- I've heard that the amount of SNI  
traffic that a maxed-out 3745-61A could handle will consume an entire  
zSeries IFL with CCL...

Sellers of the FLEX/ES boxes might get some business; for some shops  
with only lightly loaded small 3745s and no grander plans for Linux  
on zSeries, buying a FLEX/ES system to run CCL on might be a better  
financial proposition than buying an IFL (and storage, and maybe  
disk, and probably more OSAs...).

Cheers,
Vic

--
Vic Cross
** all comments my own, not attributable to employer, spouse, child,  
dog, etc **


 
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