Connecting sfp and sfp+ interfaces

Unanswered Question
Dec 10th, 2009

Hi all. Here from Spain.



¿How can i connect a Cisco switch Nexus 5000 to a Cisco switch 3750-E at 10 Gpbs of bandwith via copper cables? 3750's switches have a TwinGig module (10Gpbs, SFP interface), and i think also have a X2-10GB-CX4 transceiver module (http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps7077/product_data_sheet0900aecd805bbe67.html); cisco Nexus 5000 has SFP+ interfaces. ¿Is it possible? ¿Can i connect sfp to sfp+ and achieve 10Gbps?


Or how can i connect a Qlogic CNA 8152 http://www.qlogic.com/Products/ConvergedNetworking/ConvergedNetworkAdapters/Pages/QLE8152.aspx), SFP+, to a switch with SFP ports (Cisco Catalyst 3560E-12D,  http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps7078/product_data_sheet0900aecd805bac22.html).


l ask all these questions because i would like to install a 10G-switched network among a NetApp 3140 and two vmware-servers with qlogic CNAs. And also connect that 10G-switch with a 3750-E stack at 10Gps.


Ufff,


Thanks in advance.

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Reza Sharifi Thu, 12/10/2009 - 07:49

Hello Ufff,


¿How can i connect a Cisco switch Nexus 5000 to a Cisco switch 3750-E at 10 Gpbs of bandwith via copper cables?



For 3750-E to connect using 10Gig, you will need the X2-10Gig transceiver module (it could be single mode or multimode). The fiber connecter type you need is SC.


On the Nexus, if you are using a 10Gig SFP, then you need to have an LC type fiber connector.


So, to connect the 3750-E to Nexus, you need  an SC to LC patch cord.


In addition,  on the 3750-E if you want to have 4 1Gig SFPs, instead of 2 X2 10Gig modules you can use TwinGig module to do that.


HTH

Reza

santjoanCisco Thu, 12/10/2009 - 09:51

Hello Reza.

Ufff was an expression. Here Franky.


Ok. My concept about TwinGig was wrong. Thanks for your answer.


So, Nexus 5000 <-> 3750 = fiber, not CX4 copper, ok?


Nexus 5000 is so expensive...


And, if i had to connect two 3750s via X2-10Gb? Fiber? CX4 copper? Suppose i don't want to stack them.


Now i think... is it possible to join two 3750s via 20Gb-bandwith-Etherchannel?

Reza Sharifi Thu, 12/10/2009 - 10:07

Hello Franky!!!!


hmm, what does Ufff mean anyway? (Thanks for clarefication)




So, Nexus 5000 <-> 3750 = fiber, not CX4 copper, ok?

Right, fiber if you want to use the 10Gig interfaces



And, if i had to connect two 3750s via X2-10Gb? Fiber? CX4 copper? Suppose i don't want to stack them.

If you want to connect 2 3750s using X2-10Gb, then you have to use fiber

All the copper ports on the 3750 are 10/100/1000 no 10Gig

stacking is a different story.  You use the connectors in the back of the switch with a stacking+ cable to stack them, so don't get theses 2 confused




Now i think... is it possible to join two 3750s via 20Gb-bandwith-Etherchannel?

Yes, you can etherchannel the 2 10Gig from each switch


HTH

Reza

santjoanCisco Thu, 12/10/2009 - 11:36

Ufff : The first one was a long paragraph in english... i was tired at the end.


You said:

If you want to connect 2 3750s using X2-10Gb, then you have to use fiber


All the copper ports on the 3750 are 10/100/1000 no 10Gig


And what about Cisco X2-10GB-CX4?, it's copper: (http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6574/product_data_sheet0900aecd801f92aa.html)


From http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps7077/product_data_sheet0900aecd805bbe67.html :



X2 for Catalyst 3750-E Series

X2-10GB-ER=

10GBASE-ER X2 Module

X2-10GB-LR=

10GBASE-LR X2 Module

X2-10GB-SR=

10GBASE-SR X2 Module

X2-10GB-CX4=

10GBASE-CX4 X2 Module

X2-10GB-LX4=

10GBASE-LX4 X2 Module

X2-10GB-LRM=

10GBASE-LRM X2 Module


Is it posible? Cheaper? Less perfomance?

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