Alcatel-Lucent 7750 SR Manual page 1483

Related Commands
Refer to the 7750 SR OS Interface Configuration Guide for more card, MDA, and port command
information. Refer to the 7750 SR OS Services Guide for details about configuring specific service
parameters.
mda
Syntax mda mda-slot
no mda mda-slot
Context config>card
Description
This command provisions an adaptor into an MDA position on an IOM slot. The provisioned MDA
may or may not exist in the system at the time of provisioning. If the provisioned MDA does not
currently exist in the specified MDA position number, it is considered to be a 'ghost' MDA. Ports and
other resources on a ghost MDA may be configured once the MDA is provisioned. When a proper
MDA matching the provisioned MDA type is inserted into the IOM MDA position, forwarding
though the MDA based on configured services or network interface will be available once the MDA
has been properly initialized.
A Versatile Service Module (VSM) is provisioned into the system in the same manner as all other
adaptors using MDA slots. Once a VSM is provisioned, independent of it actually existing in the
system on the specified slot and MDA position, the VSM may be defined as a member of a CCAG
(Cross Connect Adaptor Group). A VSM inserted into the system prior to provisioning is not
available for CCAG membership and will be treated as an unprovisioned MDA.
Once a VSM is provisioned and populated in the system, it cannot be used until it has been defined
membership into a CCAG. When the CCAG membership has been defined for the VSM, the various
internal resources of the VSM will be configured according to the CCAG bandwidth control
parameters. This includes the alpha and beta path weights, the alpha and beta path maximum rates
and the aggregate alpha and beta maximum rate.
The no form of the command unprovisions an MDA from the system. For a VSM to be
unprovisioned, the VSM must not be a member of a CCAG. If the VSM is a member of a CCAG, the
no cca slot-number/mda-number command must be used in the CCAG member-list context. Once a
CCA is unprovisioned from the system; it cannot be made a member of a CCAG until it has been
reprovisioned.
Default None (An MDA position number must be explicitly specified.)
Parameters
mda-slot — Defines the position on the card slot-number the CCA will be populated into. On the iom-
7750 SR OS Services Guide
20g IOM module, two MDA positions are available. Future IOMs will support a different
number of MDA positions.
Values
1 or 2
Versatile Service Module
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