Cisco SFP-H10GB-CU5M vs Cisco SFP-H10GB-ACU7M

[Rafael Jimenez]

what is the diference bettween passive an active Twinax cables?

especifically Cisco SFP-H10GB-CUxM and Cisco SFP-H10GB-ACUxM .

[Reza Sharifi]

It is about the CNA you are using:

In regards to active versus passive twinax cables, it depends on what you are connecting together:

Note: The following information assumes that either FOS 6.4.1 (or later) or NX-OS 4.2(1)N2(1) (or later) is being used.

• If you are connecting a CNA to a Cisco ToR switch (Nexus) and the  cable length is 1, 3, or 5m, you can use a Cisco-supplied 1, 3, or 5m  passive twinax cable or a EMC active twinax 1, 3, or 5m cable.
• If you are connecting a CNA to a Cisco ToR switch (Nexus) and the  cable length is 7 or 10m, you need to use a Cisco-supplied 7 or 10m  active twinax cable.
• If you are connecting a CNA to a Brocade ToR switch (8000) and the  cable length is 1, 3, or 5m, you can use a Brocade-supplied 1, 3, or 5m  active twinax cable or an EMC-supplied 1, 3, or 5m active twinax cable.

The above assumes that you are using a CNA that supports a given  flavor of twinax.  As of right now, the QLogic 815x and Emulex OCe1012,  support either active or passive twinax from both Cisco and QLogic.  The  Brocade CNAs support active twinax from Brocade or EMC’s active twinax  cable.

here is the link:

http://brasstacksblog.typepad.com/brass-tacks/2010/12/should-i-use-optical-fiber-or-twinax-cable.html

HTH

[Rafael Jimenez]

Thanks Reza,

what if I want connect two catalyst 7-E supervisors (two 4500) with 10GB uplinks?.

do I need use active or passive?.

Is enougth with the SFP+Twinax cable like SFP-H10GB-xxx ? or do I need an aditional part like a SFP?.

Thanks.

[Reza Sharifi]

Hi

You can't use twinax on the sup module of a 6500

Twinax is only used with SFP ports the 6500 uses x2 LC type connector

HTH

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