7950 XRS
Overview
The Nokia 7950 XRS is a large-scale routing system that is designed for core deployments. The NFM-P supports the management of the 7950 XRS including device discovery, equipment management, routing management, OAM, MPLS, QoS policies, and services.
Shelf components
You can monitor and manage the following 7950 XRS shelf components using the navigation tree:
The number of the preceding components depends on the variant of the 7950 XRS.
The shelf components are N+1 redundant. The fan tray and power supply tray objects are automatically discovered and provisioned, and require no configuration using the NFM-P. See Chapter 12, Device object configuration for more information about configuring shelf objects.
CCMs
The 7950 XRS-20 shelf includes CCMs that support operator access to the routing system. You can view and monitor CCM and flash memory module properties from the CCM properties form. The CCMs are automatically detected and provisioned.
Each CCM includes three flash memory modules which can be viewed and monitored by the NFM-P. The “cf1” module is an internal flash module that is embedded in the system. The “cf2” and “cf3” modules are external compact flash slots.
XCM cards
The 7950 XRS-20 shelf includes ten XCM card slots that can be configured with XCM X20 cards. The 7950 XRS-16c shelf includes eight XCM card slots that can be configured with XCM X16 cards. Each XCM card can house up to two XMA cards for a total of twenty XMAs per 7950 XRS-20 shelf or sixteen XMAs per 7950 XRS-16c shelf. XMA card slots can also be configured with a compact XMA card, or C-XMA card. The 7950 XRS-16c can be configured only with C-XMA cards.
Note: To configure the 40-port 10 GE SFP+ XMA or 4-port 100 GE CXP XMA cards on the 7950 XRS-20, you must configure SFM X20 B cards on the shelf. You cannot configure the XMA cards if the shelf is configured with SFM X20 cards.
XCM2 cards
These cards enable redundant switching capacity up to 2.4T FD per XMA or 4.8T FD per XCM, and can accommodate any FP3-based or FP4-based XMA.
CPM cards
The 7950 XRS shelf includes two redundant CPM card slots. Each slot is automatically provisioned with CPM X20 or CPM X16 cards, depending on the variant of the 7950 XRS.
On the 7950 XRS-20, each CPM card slot has an association with a CCM. If one of the components is removed, the appropriate status is applied to the corresponding CPM or CCM. In the navigation tree, the CPM in Card Slot A is associated with CCM A. The CPM in Card Slot B is associated with CCM B.
On the 7950 XRS-16c, each CPM X16 card includes three flash memory modules, which can be viewed and monitored with the NFM-P. There is no associated CCM for the CPM X16.
SFM cards
The 7950 XRS shelf includes eight SFM card slots. SFM card slots on the 7950 XRS-20 can be configured with SFM X20 or SFM X20 B cards. SFM card slots on the 7950 XRS-16c can be configured with SFM X16 or SFM X16 B cards. You cannot configure a mix of SFM card types cards on one shelf. All configured slots must contain the same type of SFM card. Seven SFM cards must be operational to provide full capacity to the XCM cards, and one SFM card is redundant. At least one SFM card must be configured for the system to function.
SFM2 cards
After SFM2 slots are configured, the new XCM2 cards can be configured. The SFM2 and XCM2 cards enable redundant switching capacity up to 2.4T FD per XMA or 4.8T FD per XCM. SFM2 cards support FP3-based and FP4-based XCM cards. FP3-based XCMs can be intermixed with FP4-based SFM2s.
Automatic provisioning for CPM5 SFMs
The NFM-P automatically provisions and configures the integrated SFMs of CPM5s that feature built-in modules. The automated provisioning occurs during node discovery.