9372PX to 2348TQ with breakout

[jbrown3118]

I know that in order to connect the 2348TQ (6x40G uplink) to the 9372PX I need to use breakout cables with appropriate SFPs.  My question is, is there any configuration to be done in order for the 2348 uplinks to work in this mode.  Can I just create the 4x10G port-channel on the 9372 and connect the FEX?  Will the FEX recognize that I am doing 4x10G instead of 40G?

Any help is appreciated.

Thanks

[Reza Sharifi]

You don't need any change/config on the 2348. The change will need to take place on the 9372PX Where you use the "interface breakout"  command to change 40Gig interfaces to 10Gigs.

HTH

[jbrown3118]

The 40G interfaces are on the 2348.  The 10G interfaces are on the 9372.  The 40G interfaces on the 2348 will need to breakout, not the other way around.  I've done breakout TOWARD an N2K before, but this is breakout in the opposite direction.  As far as I know, the uplink interfaces on an N2K are not configurable.  Thus my question: Can I just create the 4x10G port-channel on the 9372 and connect the FEX?  Will the FEX recognize that I am doing 4x10G instead of 40G?

Thanks for the reply Reza.

[Reza Sharifi]

Thus my question: Can I just create the 4x10G port-channel on the 9372 and connect the FEX?  Will the FEX recognize that I am doing 4x10G instead of 40G?

Yes, the only place you can do the breakout is on the parent switch (in this case 9372) as the FEX (2348) is just a dump device and not configurable.

I need to add this and that I have never used the 9300 series before but have used the 2348 FEX with other parent switches (5k, 6k. etc..) and that is how they work. So my knowledge on the 9300 is very limited.

HTH

[jbrown3118]

Thanks for the responses.  I will let you know how this turns out.