[c-nsp] Hw field in 7600 show mod

[Phil Mayers]

On 06/08/10 17:04, John Neiberger wrote:
> I'm trying to compare two 7600s. We're seeing an odd issue on one, but
> not the other. They both have SUP720-3BXLs on them, but the Hw field
> on the first one is 5.3, while the second one is 5.7. We're seeing
> this issue on the router with the 5.3 version, but we're not seeing it
> on the 5.7 router. This is a multicast issue that we thought we had
> figured out, but then we realized that if we were right then it should
> be affecting both boxes.
>
> Any idea what the Hw field is for? Does that indicate an earlier
> version of that blade?

Yes.

I have never been able to find a definitive list of the "bugs" fixed in 
later minor hardware revisions. I suspect Cisco are not keen to reveal 
it; it would make their sparing difficult ("You sent me an older sup, I 
want a newer one").

FWIW we have Hw 4.4, 4.6, 5.2 and 5.4 in service at various places. Hw 
revision does seem to correspond roughly with purchase date i.e. newer 
is higher.