Interface Configuration
7750 SR OS Interface Configuration Guide Page 19
Configuration Overview
NOTE: This document uses the term preprovisioning in the context of preparing or preconfiguring
entities such as chassis slots, line cards (or input/output modules (IOMs) and media dependent
adapters (MDAs), ports, and interfaces, prior to initialization. These entities can be installed but
not enabled. When the entity is in a no shutdown state (administratively enabled), then the entity
is considered to be provisioned.
Alcatel-Lucent 7750 SR-Series routers provide the capability to configure chassis slots to accept
specific line card and MDA types and set the relevant configurations before the equipment is
actually installed. The preprovisioning ability allows you to plan your configurations as well as
monitor and manage your router hardware inventory. Ports and interfaces can also be
preprovisioned. When the functionality is needed, the card(s) can be inserted into the appropriate
chassis slots when required.
The following sections are discussed.
• Chassis Slots and Cards on page 19
• MDAs on page 20
• Ports on page 34
Chassis Slots and Cards
To pre-provision a chassis slot, the line card type must be specified as well as the MDA type.
System administrators or network operators can enter card type information for each slot, allowing
a range of card types in particular slots. From the range of card types, a card and accompanying
MDAs are specified. When a card is installed in a slot and enabled, the system verifies that the
installed card type matches the allowed card type. If the parameters do not match, the card remains
offline. A preprovisioned slot can remain empty without conflicting with populated slots.
SR7/SR12 systems accept Input/Output Modules (IOM) cards. These IOM cards have two slots
which accept MDA modules. The SR-c12 and SR-c4 systems do not accept IOMs. SR-c12 and
SR-c4 systems accept MDAs using an MDA Carrier Modules. SR-c12 and SR-c4 systems also
accept Compact Media Modules (CMAs) directly without the need for MCMs. Refer to the
appropriate system installation guide for more information.
MCMs
An MCM (MDA Carrier Module) slot must be configured before an MDA (Media Dependant
Adapter) can be provisioned. If you provision an MDA type before an MCM slot is configured, it
is assumed you are provisioning a Compact Media Adapter (subscriber/SAP/spoke SDP). CMAs
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