Can anyone confirm whether or not the WS-C4948-10GE switch supports the TwinX converter modules to allow the use of the 1000Base-X SFPs ?
The data sheets state clearly that only the X2 optics are supported for 10GE fibre uplinks, yet the release notes for version 12.2(50)SG state that the new hardware feature, "SFP+ using the X2 hole adapter" is supported.
Any help is much appreciated.
it looks like unsupported in the datasheet
see table-2 at the line "TwinG support" it reports No
configuration guide that is shared with C4500 says:
To use an SFP+ in an X2 port to obtain 10-Gigabit Ethernet bandwidth, the Catalyst 4500 series switch supports OneX Convertor modules. When you plug a OneX Converter module into an X2 port, it converts the X2 port into an SFP+ port into which you can plug in an SFP+. An SFP+ in a OneX Convertor module provides the same functionality as an X2 and maintains the same port numbering.
This feature is supported on Supervisor Engine 6-E X2 ports as well as the WS-X4606-10GE (or WS-X4606-X2-E), WS-X4908-10GE, WS-X4904-10GE, and WS-C4900M chassis.
It makes sense for a data center switch like this to support only 10GE uplinks
Hope to help