[c-nsp] 7600/SUP32/6x48-GE-45AV LCs

[Gert Doering]

Hi,

On Mon, Jul 29, 2013 at 11:08:58AM -0400, Jason Lixfeld wrote:
> CISCO7606

I'm not sure if a 7600 with LAN cards is a good idea.  Go with the sane BU,
get a 6506.   Same chassis, less insanity inside.

> FAN-MOD-6HS
> PWR-2700-DC
> WS-SUP32-GE-3B
> WS-X6148-GE-45AF
> WS-X6148A-GE-45AF
> WS-X6548-GE-45AF

Don't go near that card.  The 6548-GE is an abomination before hell - it
shares 1 GE backplane bandwidth among *8* ports, so one single port can
saturate a group of 8.  Worse, the buffering of the 1:8 ASIC is stupid by
default, so if you have a 100M port that is overloaded, it can head-of-line
block the other 7 GE ports.  Doesn't do jumbo frames either.

I'm not sure about the 6148*GE - we never had any of these, when we need
GE on 6500s, we either use the 6516-GBIC or 6516-GE-TX cards, or go for a
6748-GE-TX (... which, unfortunately, is not available as -45AF variant,
and additionally the card needs a Sup720).


In summary, I think the 6500 selection of line cards is not well suited
to do POE on Gbit with it if you need GigE performance as well.

gert

-- 
USENET is *not* the non-clickable part of WWW!
                                                           //www.muc.de/~gert/
Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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