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Miguel Goncalves

twingig support in 4500 Supervisor II+10GE


I have a doubt regarding the support of CVR-X2-SFP - aka twingig adapter - in WS-X4013+10GE (Supervisor II+10GE in a 4507R-E chassis).

This sup has 2 10GE and 4 GE interfaces and the 4 GE interfaces are all occupied. We need to connect 2 more switches that don't have 10GE ports, so the idea was to use the twingig adapter to use 2 more gigabit SFP's. The problem is I can't find it in any compatibility list, either stating it is supported or not supported.

Has anyone tried this in real life?

Thanks for any answers!


Tom Randstrom
Rising star

Take a look at the following URL to determine the capability you are looking for:

The compatibility information tables do not seem to identify what is supported with the Twingig module.

Marvin Rhoads
VIP Community Legend

I couldn't find that particular (older) Supervisor but it is conspicuous by its absence on this page where it specifically states:

To increase the flexibility of X2 ports on the Supervisor Engine 6-E, Supervisor Engine 6L-E and WS-X4606-X2-E, the Catalyst 4500 series switch, as well as Catalyst 4900M and Catalyst 4948E, support TwinGig Convertor modules. When you plug a TwinGig Convertor module into an X2 hole, it converts a single X2 hole (capable of holding one pluggable X2 optic) into two SFP holes (capable of holding two pluggable SFP optics). This enables you to have 10-Gigabit ports and 1-Gigabit ports on the same line card. It also allows you to use Gigabit ports, and then switch to a 10-Gigabit port, when needed.

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