[c-nsp] IOS Modularity

[lists at hojmark.org]

> you can restart a process, upgrade a process, protected memory 
> and more. all in IOS on 7600 platform.

Apparently the current version is also IOS running on top of a
microkernel OS, which is what brings you restartable processes
etc. They call it ION (IOS On Nucleus).

That might also explain the jump in image size from SXD to SXE.

> now it will be interesting to see if the 7200 platform will
> have IOS-XR or these functions on IOS

It's not IOX. However, I don't see why ION shouldn't come to
the 7200 as well, but it'll probably need tons of (more) DRAM
and flash.

-A