Configuration Overview
Page 14 7210 SAS M, T, X, R6, R12, Mxp Interface Configu-
ration Guide
           Equipped Type (if different)            State State
-------------------------------------------------------------------------------
8      (not provisioned)                           up    unprovisioned
           imm-sas-b-4sfp+
A      cpm-sf-sas-R12                              up    up/active
B      cpm-sf-sas-R12                              up    up/standby
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A:A6144909484>show#
MDAs
The 7210 SAS-R6, R12, 7210 SAS-X, and 7210 SAS-T platforms, as explained in the previous 
section, do not support any physical removable MDAs. Software uses the concept of MDA 
internally (as a logical entity) to represent the ports and the MDA type is either auto-provisioned 
on bootup or auto-provisioned automatically based on the configured IMM type. 
On 7210 SAS-M, as explained in the previous section, in addition to the fixed ports, a expansion 
slot is available. It is represented as a physical MDA and needs to be provisioned. The section 
below talks about provisioning of MDAs and is applicable only to those platforms where physical 
MDAs are supported.
A chassis slot and card type must be specified and provisioned before an MDA can be 
preprovisioned. An MDA is provisioned when a type designated from the allowed MDA types is 
inserted. A preprovisioned MDA slot can remain empty without conflicting with populated slots. 
Once installed and enabled, the system verifies that the installed MDA type matches the 
configured parameters. If the parameters do not match, the MDA remains offline. An MDA is 
provisioned when a type designated from the allowed MDA type is inserted. A preprovisioned 
MDA slot can remain empty without conflicting with the populated slots.
Provisioning of MDA on 7210 SAS-M
Provisioning guidelines for MDA used with 7210 SAS-M:
• The device rejects the insertion of a CES card if the slot is provisioned for a 2* 10G MDA 
and vice versa.
• If a 2*10G MDA provisioned, it ensures that the BOF parameter "no-service-ports" is 
configured to specify two ethernet ports.
• Only on 7210 SAS-M 24F variant, the no-service-ports BOF parameter is not available for 
use.