HP StorageWorks 2/64 HP StorageWorks Fabric OS 5.x Command Reference Guide (AA - Page 801

digital certificate disparity DLS DMTF domain controller domain ID DTE DWDM E_D_TOV E_Port ECCN edge fabric EE_Credit EIA rack ELP ELS EM embedded port EMI emulex enabled zone configuration An electronic document issued by a CA (certificate authority) to an entity, containing the public key and identity of the entity. Entities in a secure fabric are authenticated based on these certificates. See also authentication, CA, public key. The proportion of 1s and 0s in an encoded character. Neutral disparity means an equal number of each, positive disparity means a majority of 1s, and negative disparity means a majority of 0s. Dynamic load-sharing. Dynamic distribution of traffic over available paths. Allows for recomputing of routes when an Fx_Port or E_Port changes status. Distributed Management Task Force. A domain controller or embedded port communicates with and gets updates from other switches' embedded ports. The well-known address is fffcdd, where dd = domain number). A unique identifier for all switches in a fabric, used in routing frames. Usually automatically assigned by the principal switch but can be assigned manually. The domain ID for an HP StorageWorks switch can be any integer between 1 and 239. Data terminal equipment. Usually refers to a terminal. Dense wave division multiplexing. Allows more wavelengths to use the same fiber. See WDM. Error-detect timeout 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 is declared. See also R_A_TOV, RR_TOV. Expansion port. A standard Fibre Channel mechanism that enables switches to network with each other, creating an ISL. See also ISL. Export classification control number. A government classification of encryption. For example, SSH is in the high-encryption category (number 5x02) and therefore has certain restrictions regarding its transfer. A Fibre Channel fabric connected to an FC router via an EX_Port (where hosts and storage are attached in a meta-SAN). 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 frame exchange across the fabric, between source and destination. See also BB_Credit, end-to-end flow control. A storage rack that meets the standards set by the Electronics Industry Association (EIA). Exchange link parameters. Extended link service. ELSs are sent to the destination N_Port to perform the requested function or service. ELS is a Fibre Channel standard that is sometimes referred to as "Fibre Channel Physical (FC_PH) ELS." Environmental monitor. Monitors FRUs and reports failures. An embedded port (or domain controller) communicates and get updates from other switches' embedded ports. The well-known address is fffcdd, where dd = domain number. Electromagnetic interference. A brand of host bus adapter. The currently enabled configuration of zones. Only one configuration can be enabled at a time. See also defined zone configuration, zone configuration. Fabric OS 5.x command reference guide 801