[j-nsp] MTBF of M-serie nodes and PICs

[Julien Goodwin]

On 14/05/12 02:00, Rachid DHOU wrote:
> Hi experts,
> 
> Does anyone have the MTBF of M series routers and their PIC especially
> Ethernet PIC.
> Same question also for J-series.

It really is better to think in terms of *what* fails (for the larger M
and up).

The most common will be:
- Moving parts: fans, hard drives
- Memory
- Optical modules

Once you get past that you're into rare territory. MTBF is a horrible
measurement for network kit, you really only care if you need redundency
and if so how much, and MTBF doesn't actually tell you very much of that.


-- 
Julien Goodwin
Studio442
"Blue Sky Solutioneering"

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