HP StorageWorks 2/32 HP StorageWorks SAN Switch 2/32 V4.2.X Installation Guide - Page 85
Community SNMP, Connection Initiator, Connection Recipient, Credit, Disparity, Domain ID, E_D_TOV
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Glossary Community (SNMP) A relationship between a group of SNMP managers and an SNMP agent, in which authentication, access control, and proxy characteristics are defined. See also SNMP. Connection Initiator A port that has originated a Class 1 dedicated connection and received a response from the recipient. Connection Recipient A port that has received a Class 1 dedicated connection request and transmitted a response to the originator. CRC Cyclic Redundancy Check; a check for transmission errors included in every data frame. Credit As applies to Fibre Channel, the number of receive buffers available for transmission of frames between ports. See also BB_Credit, EE_Credit. Disparity The relationship of ones and zeros in an encoded character. "Neutral disparity" means an equal number of each, "positive disparity" means a majority of ones, and "negative disparity" means a majority of zeros. DLS Dynamic Load Sharing; dynamic distribution of traffic over available paths. Allows for recomputing of routes when an Fx_Port or E_Port changes status. Domain ID As applies to SAN switches, a unique number between 1 and 239 that identifies the switch to the fabric and is used in routing frames. Usually automatically assigned by the switch, but can be manually assigned. E_D_TOV Error Detect Time-out Value; the minimum amount of time a target waits for a sequence to complete before initiating recovery. Can also be defined as the maximum time allowed for a round-trip transmission before an error condition is declared. E_Port Expansion Port; a type of switch port that can be connected to an E_Port on another switch to create an ISL. See also ISL. EE_Credit End-to-end Credit; the number of receive buffers allocated by a recipient port to an originating port. Used by Class 1 and 2 services to manage the exchange of frames across the fabric between source and destination. See also End-to-end Flow Control, BB_Credit. SAN Switch 2/32 Version 4.2.x Installation Guide 85