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What is Ethernet switch fabric?
Switching fabric is a network topology wherein different network nodes or terminals connect with each other via a number of switches, usually crossbar switches. The topology is used in high-speed networks like fiber channel, InfiniBand and RapidIO. Switching fabric may also be known as switched fabric or simply fabric.
What protocol does Fiber Channel use?
SCSI interface protocol
Fibre Channel Protocol (FCP) is the SCSI interface protocol utilising an underlying Fibre Channel connection. The Fibre Channel standards define a high-speed data transfer mechanism that can be used to connect workstations, mainframes, supercomputers, storage devices and displays.
What is the difference between Fibre Channel and Ethernet?
Fibre channel supports a transmission speed of 1, 2, 4, 8, 16, 32, and 128 Gbps. While, the speed of optical transceiver used in Ethernet ranges from Fast Ethernet of up to 100 Mbps, Gigabit Ethernet of up to 1000Mbps, 10 Gigabit of up to 10 Gbps to even some 40 or 100 Gbps today.
What are three basic interconnectivity options supported by Fibre channel?
The FC architecture supports three basic interconnectivity options: point-to-point, arbitrated loop (FC-AL), and fabric connect.
What is the goal of Ethernet fabric?
Compared to classic hierarchical Ethernet architectures, Ethernet fabrics provide higher levels of performance, utilization, availability, and simplicity. Ethernet fabrics eliminate the need for Spanning Tree Protocol, while still being completely interoperable with existing Ethernet networks.
What are the distance limitations of Fibre channel?
16 Gb shortwave adapters have a maximum distance of 125 meters (410 ft). 16 Gb longwave adapters have a maximum distance of 10 km (6.2 miles). 32 Gb adapters have a maximum distance of 10 km (6.2 miles).
Does iSCSI use Ethernet?
iSCSI benefits Because it uses standard Ethernet, iSCSI does not require expensive and sometimes complex switches and cards that are needed to run Fibre Channel networks.
What are the distance limitations of Fibre Channel?
How does a crossbar switch work?
A crossbar switch is an assembly of individual switches between a set of inputs and a set of outputs. The switches are arranged in a matrix. If the crossbar switch has M inputs and N outputs, then a crossbar has a matrix with M × N cross-points or places where the connections cross.
Which is Ethernet flow point does Rep support?
REP is supported only on Trunk Ethernet Flow Point (EFP) interfaces. The figure below shows an example of a segment consisting of six ports spread across four switches. Ports E1 and E2 are configured as edge ports. When all ports are operational (as in the segment on the left), a single port is blocked, shown by the diagonal line.
What does the resilient Ethernet protocol ( REP ) do?
Resilient Ethernet Protocol (REP) The Resilient Ethernet Protocol (REP) is a Cisco proprietary protocol that provides an alternative to the Spanning Tree Protocol (STP). REP provides a way to control network loops, handle link failures, and improve convergence time.
Why are Ethernet switches used in data centers?
High-bandwidth Ethernet switch fabrics are now the leading networking solution used to interconnect servers and storage within large data center networks. With the movement toward modular rack scale architectures, some limitations with Ethernet are becoming exposed.
What is the name of the Cisco Ethernet protocol?
Resilient Ethernet Protocol (REP) The Resilient Ethernet Protocol (REP) is a Cisco proprietary protocol that provides an alternative to the Spanning Tree Protocol (STP).