Depending on the chassis type, the relationship between the chassis slot and card slot varies. Chassis slots represent the physical slots in the chassis where modules can be installed. Card slots represent the reference used in management interfaces when provisioning the modules and then using resources of those modules (for example, port references). See the appropriate platform Installation Guide for more information.
To preprovision a card slot, the card type must be specified. Users can enter card type information for each slot. When a card is installed in a slot and enabled, the system verifies that the installed card type matches the provisioned card type. If the parameters do not match, the card remains offline. A preprovisioned slot can remain empty without conflicting with populated slots.
The general syntax for the configuration of card slots is similar for all platforms, though the number of available slots varies by platform and chassis model. The supported card-types vary by chassis. See the appropriate platform Installation Guide for more information.
The 7950 XRS platforms accept XCMs in card slots. An XCM has two slots, each of which accept an XMA or C-XMA module. The C-XMA modules require a mechanical adapter to fit in an XMA slot.
In the config context, use the following CLI commands and syntax examples to provision the chassis slot and XCM:
A:XRS20>config# card 1
A:XRS20>config>card# card-type xcm-x20
The 7750 SR-2s/7s/14s platforms accept XCMs in card slots. The XCMs of the 7750 SR-2s/7s platforms have a single slot for an XMA or an XIOM module. The XCM of the 7750-14s have two slots for the XMA or XIOM modules.
The 7750 SR-1s platform supports a single XCM in a dedicated card slot. This XCM has a single XMA module. The type of XMA module is fixed based on the variant of 7750 SR-1s chassis. Both the XCM and the XMA must be provisioned.
The 7450 ESS-7/12, and 7750 SR-7/12, and 7750 SR-12e platforms accept either IMMs or IOMs in card slots. IOMs have two slots for pluggable MDAs. The IOM4-e and IOM4-e-B support MDA-e modules. The IOM5-e supports MDA-e-XP modules.
In the config context, use the following CLI commands and syntax examples to provision a card slot with an IOM:
A:SR12-1>config# card 1
A:SR12-1>config>card# card-type iom3
IMMs have integrated MDAs. The provisioning requirements depends on the generation of IMM that you use. See the IMM Installation Guide for more information.
The 7750 SR-a platforms support IOM-a cards in dedicated chassis slots. The 7750 SR-a4 supports one physical IOM-a in slot 3. This IOM-a is represented in the CLI as card 1. The 7750 SR-a8 supports two physical IOM-a cards, one in slot 3, the other in slot 6. These IOM-a cards are represented in the CLI as card 1 and card 2 respectively. The IOM-a does not have pluggable MDA slots. Each IOM-a can be configured to support up to four MDA-a or MDA-aXP modules. IOM-a cards are configured in the same manner as IOMs.
The 7750 SR-e platforms support the IOM-e modules in dedicated slots in the rear of each chassis. The 7750 SR-1e supports one physical IOM-e module. This IOM-e is represented in the CLI as card 1. The 7750 SR-2e supports two physical IOM-e cards. These IOM-e cards are represented in the CLI as card 1 and card 2 respectively. The 7750 SR-3e supports three physical IOM-e cards. These IOM-e cards are represented in the CLI as card 1, card 2, and card 3 respectively. The IOM-e does not have pluggable MDA slots. An IOM-e can be configured to support up to four MDA-e modules. IOM-e cards are configured in the same manner as IOMs.