7750SR 7750SR-7S 13RU System capacity 57.6 Tb/s

Expandable Media Adapter-s (XMA-s)

The XMA-s provides flexible interface options for the 7750 SR-14s, SR-7s and SR-2s, including highdensity 10GE, 40GE, 100GE and 400GE interfaces. They contain an FP4-based forwarding complex that performs typical functions such as packet lookups, traffic classification, processing and forwarding, service enablement and QoS.

The XMA-s uses front face plate connectors capable of supporting native QSFP-DD and QSFP28 optical modules and 100GE and 10GE optical breakout options.The XMA-s is available in three base adapters: 36 connectors of QSFP-DD at


QSPF-DD optics enables any high-density 10GE, 40GE, 100GE and 400GE interfaces.QSFP-DD is backwards compatible to QSFP28, and Nokia takes the additional step of supporting 10 x 10GE break-out per QSFP28.This enables leading 10GE density without the loss of 60 Gb/s of capacity per slot or forcing design shortcuts.

XMA Control Module-s (XCM-s)

The XMA-s is housed in an XCM-s.The XCM-s contains a slot-level control plane subsystem and fabric interface.The 7750 SR-14s XCM-s delivers 9.6 Tb/s FD slot capacity, supporting a pair of XMA-s adapters.The 7750 SR-7s and 7750 SR-2s XCM-s delivers 4.8 Tb/s FD slot capacity supporting a single XMA-s.The 7750 SR-2s supports two XCM-s modules, each supporting a single XMA-s of up to 4.8 Tb/s FD.

The 7750 SR-1s has a fixed XCM-s/XMA-s in a fixed form factor system with a non-redundant control plane.The control plane function and CPU are housed on the integrated XCM-s/XMA-s.The 7750 SR-1s comes in base variants of 36 connectors of QSFP-DD at 4.8 Tb/s FD and 36 connectors of QSFP28 at 2.4 Tb/s FD, and 100GE and 10GE optical breakout options.It is also available in a number of 

 

Power shelf

The 7750 SR-s implements a building-block approach with a decoupled power subsystem design.DC, AC or HVDC power type is available via a clip-on power shelf that can be flexibly changed and spared independent of the main 7750 SR-s system.This decoupled power design provides a very high degree of flexibility along with better cooling efficiencies.The two separate power shelves can be of the same power type or different power types.The 7750 SR-14s and SR-7s share a common power shelf. 

 

The 7750 SR-1s and SR-2s have an integrated power shelf that is either AC/HVDC or LVDC.All 7750 SR-s systems share common power supply units (PSUs) which insert into the power shelf.Decoupling power from the 7750 SR-14s and SR-7s ensures that the system is never handicapped by changing power requirements or power standards in the future.The 7750 SR-s also never relies on rear-mounted power supply fans for the cooling of next-generation ASICs or 400G and greater optics.