[ih] why did CC happen at all?

[Paul Ferguson]

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On 9/2/2014 9:23 AM, Louis Mamakos wrote:

> 2. Anyone remember HSSI and ATM DXI interfaces on your routers?
> This was early in the deployment of ATM, and you could get this
> external device that was a combination of an DS3 CSU/DSU and an ATM
> SAR.  There was this DXI protocol a router could speak to send and
> receive frames on ATM virtual circuits.  The external ATM frame
> shredder would do all of the SAR functions because the router
> interfaces didn't exist yet.
> 
> Every wonder why IS-IS LSDB entries contain checksums, well this is
> why..

Oh yes, I remember well, although I wish I could forget. :-)

- - ferg

- -- 
Paul Ferguson
VP Threat Intelligence, IID
PGP Public Key ID: 0x54DC85B2
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