Hi Graham, please see inline below:
At 09:17 AM 8/9/2010, Graham P. Wooden averred:
Hi there,
I am trying to decide if swapping a few x6348s to x6548
(fabric-enabled/CEF256 .. no DFC) will be a huge performance gain
with SUP32s (IOS is SXI).
Nope.
>From what I am reading, it looks like they will somewhat - but
appears that I will bump up against the 256 mark until the SUPs
themselves get upgraded.
There is no "256" with sup32. It is a bus-based sup, no xbar fabric
whatsoever.
Even if the line cards have the DFCs, can the SUP32-3B take advantage of them?
DFC + sup32 = not supported/possible.
Basically you're trading one bus-attached 48 port 1G card for
another. There are some benefits perhaps - qos capabilities,
possibility to u/g to sup720 in future & get fabric connections & add
DFCs for more performance - but for now, they are pretty equivalent.
Hope that helps,
Tim
Currently, this chassis doesn't see a whole-lot of traffic and is
very light on the QoS side - but I have the funds to get this
particular chassis upgraded and thought that spending a few bucks
for new line cards would be a step in the right direction.
Appreciate any real-world comments on the older 6348 vs. 6548 w/ a SUP32.
Thanks,
-graham
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Tim Stevenson, tstev...@cisco.com
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Distinguished Technical Marketing Engineer, Cisco Nexus 7000
Cisco - http://www.cisco.com
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