This part of ISO\/IEC 9314 specifies a hybrid ring control (HRC) protocol which provides a mode of operation in which both packet switched and isochronous data are transmitted within the same special frame structure, called a cycle. HRC is designed to operate with the existing media access control (MAC), physical layer (PHY), and physical medium dependent (PMD) layers of the FDDI protocol.<\/p>\n
The HRC is composed of the hybrid multiplexer (H-MUX) and the isochronous media access control (IMAC) protocols. The H-MUX integrates packet and isochronous data into cycles which it transmits onto and receives from the medium using the services of the physical layer. The l-MAC provides separate transmission channels for the transfer of user isochronous data streams. The format, clocking and synchronization of cycles, and the operation and interfaces of the H-MUX and l-MAC are defined by this part of ISO\/IEC 9314. These interfaces include the interface to the FDDI station management (SMT) protocol.<\/p>\n
The HRC is designed to support various transmission rates, from 100 Mbps upwards, in increments of 6,144 Mbps. All transmission rate dependent parameters defined in this part of ISO\/IEC 9314 assume a transmission rate of 100 Mbps.<\/p>\n
Stations composed of FDDI and HRC entities are referred to as FDDI-II stations. The FDDI packet MAC (P-MAC) and the HRC components, and their architectural relationship to LLC and a circuit switching Multiplexer (CS-MUX) are illustrated in figure 1. This figure does not imply an implementation configuration<\/p>\n
FDDI-II networks consist of FDDI-II stations. Interoperability between FDDI and FDDI-II stations on the same network is provided in HRC basic mode, which only supports packet transmission.<\/p>\n
The set of FDDI standards, ISO\/IEC 9314, specifies the interfaces, functions, and operations necessary to ensure interoperability between conforming FDDI implementations. This part of ISO\/IEC 9314 specifies a hybrid ring control protocol: HRC. Conforming implementations may employ any design technique that does not violate interoperability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Information processing systems. Fibre Distributed Data Interface (FDDI) – Hybrid Ring Control (HRC)<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 1995<\/td>\n 106<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":345685,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[669,2641],"product_tag":[],"class_list":{"0":"post-345679","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-35-100-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/345679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/345685"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=345679"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=345679"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=345679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}