HP Cisco MDS 8/24c Cisco MDS 8Gb Fabric Switch for HP BladeSystem c-Class User - Page 49
Simple Network Management Protocol. An Internet management protocol that uses
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RAID request rate route routing RR_TOV RSCN SAID SAN SD_Port SDRAM sequence service rate SFP single mode SNMP SNS SUM switch switch port switched fabric SWL TE_Port tenancy throughput topology transmission character Redundant Array of Independent Disks. A collection of disk drives that appear as a single volume to the server and are fault tolerant through mirroring or parity checking. The rate at which requests arrive at a servicing entity. With respect to a fabric, the communication path between two switches. May also apply to the specific path taken by an individual frame from source to destination. The assignment of frames to specific switch ports according to frame destination. Resource recovery time-out value. The minimum time a target device in a loop waits after a LIP before logging out a SCSI initiator. Registered state change notification. A switch function that allows notification of fabric changes to be sent from the switch to the specified nodes. Service Agreement Identifier. Storage area network. A network of systems and storage devices that communicate using FC protocols. In SPAN destination port (SD port) mode, an interface functions as a switched port analyzer (SPAN) Synchronous dynamic random access memory. The main memory for a switch. See also switch. A group of related frames transmitted in the same direction between two N_ports. The rate at which an entity can service requests. Small form-factor pluggable optical transceiver. The fiber optic cabling standard that corresponds to distances up to 10 km between devices. Simple Network Management Protocol. An Internet management protocol that uses either IP for network-level functions and UDP for transport functions, or TCP/IP for both. SNMP can be made available over other protocols (such as UDP/IP) because it does not rely on the underlying communication protocols. See also MIB, trap (SNMP). Simple Name Server. A switch service that stores names, addresses, and attributes for up to 15 minutes, and provides them as required to other devices in the fabric. May also be referred to as a directory service. Software Update Manager. Hardware that routes frames according to FC protocol and is controlled by software. A port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports. A network topology where devices connect to each other through Fibre Channel switches. Short wavelength. A type of fiber optic cabling that is based on 850 mm lasers and supports link speeds up to 2 Gb/s. May also refer to the type of transceiver. See also LWL. A trunking expansion port. The time span that begins when a port wins arbitration in a loop and ends when the same port returns to the monitoring state. Also called loop tenancy. The rate of data flow achieved within a cable, link, or system. Usually measured in bits per second (b/s). With respect to FC, the configuration of the FC network and the resulting communication paths allowed. There are three possible topologies: • Point-to-point: A direct link between two communication ports • Switched fabric: Multiple N_Ports linked to a switch by F_Ports • Arbitrated loop: Multiple NL_Ports connected in a loop A 10-bit character encoded according to the rules of the 8b/10b algorithm. Cisco MDS 8Gb Fabric Switch for HP BladeSystem c-Class User Guide 49