UCSM to C240 - can use old 2248 way or have to use the new 2232 way?

[mcotherman]

Referring the the fairly well known, but somewhat dated C200 document:

http://www.cisco.com/en/US/docs/unified_computing/ucs/c/hw/C200M1/install/ucsm-integration.html

If my customer is ordering brand new C240's and 6296's, and we want to have the 10G ports on the C240 CNA's go directly to the 6296 so they are not oversubscribing like they would if going through a 2232... and use a 2248 for the uplinking of the LOM connections... But it is not clear at all if that method is supported with newer server firmware and UCSM versions.

-mike

[Zaira Vega]

Hello,

Check this out:

http://www.cisco.com/en/US/docs/unified_computing/ucs/c/hw/C240/install/ucsm-integration.html#wp1102676

Based on that, only the 2232 way is supported.

-Zaira

[Robert Burns]

Quite simply, the 2248's were 1G only.  The 2232 does both 1G/10.   This is the second phase towards single wire management.  The C-Series data and mgmt connections now both terminate on the FEX (2232), whereas before the 10G connections went into the FIs, and Management into the 1G 2248's. 

Last phase which is coming will make use of new adatpers in which both data and mangement will be carried over single wires to a 2232.

Regards,

Robert

[mcotherman]

I understand new vs. old, and that the 2248 was 1G...   Does someone have a statement by Cisco saying this is not supported ???

If the customer has a hard requirement to not oversubscribe, and go wire rate, we are limited to 8 servers per 2232, which amounts to them paying $1250 for each of 8 servers up to $10000 for a single server for what is really just a dongle.

even the new adapters still will have to go to the 2232 from what I hear, whereas if they could hook up straight to the FI if they only had a couple of C-Series in their Blade environment... does not seem like rocket science to do a bit of packet manipulation on the CNA or in the FI

Does not seem to follow the mantra of less cabling, complexity, and components of unified....