On 02/10/2011, at 12:03 PM, Martin T wrote:
> In addition, as I checked the 4900 series as well, do built in X2
> ports(the ones in the chassis http://mcaf.ee/us1dt) in 4900M support
> "TwinGig Converter Module"? According to documentation they don't. Any
> experience with this?
Only the 8-port X2 half card (X4908 supports the TwinGig modules. The OneX
modules (X2 to SFP+) are supported in all X2 ports, even the built-in chassis
ports.
A 4900M would meet your needs, but you'd have to configure as:
1x WS-X4908-10G-RJ45 (8x 10GBASE-T ports)
1x WS-X4908-10GE (8x X2 10Gb ports)
+ 8x CVR-X2-SFP TwinGig converter
+ 14x GLC-T (14x 1000BASE-T ports)
That would leave 2x SFP ports spare on the TwinGigs for your LX10 optics and
all 8x X2 ports on the chassis free for other 10gig purposes.
It's a bit more expensive like this than making use of the WS-X4920-GB-RJ45 20
port 1000BASE-T card, though, which you could do if you didn't need the 2x LX10
SFPs. Could you upgrade to 10GBASE-LR? You could put 2x X2-10GB-LR adapters
in the X2 chassis slots.
Tom
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