HP Surestore 64 Planning Guide - Page 84
Joining Zoned Fabrics, Default zone, RSCN service requests
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• Default zone The default zone consists of all devices not configured as members of a zone contained in the active zone set. If there is no active zone set, then all devices attached to the fabric are in the default zone. For the default zone: - The default zone is enabled or disabled separately from the active zone set. - If the default zone is disabled and there is no active zone set, then the zoning feature is completely disabled for the fabric and no devices can communicate with each other. - All devices are considered to be in the default zone if there is no active zone set. • RSCN service requests Registered state change notification (RSCN) service requests are transmitted to all N_Ports attached to the director when the zoning configuration is changed. Joining Zoned Fabrics Directors are linked through ISLs to form multiswitch fabrics. In a multiswitch fabric, the active zoning configuration applies to the entire fabric. Any change to the configuration applies to all directors in the fabric. When fabrics attempt to join, participating directors exchange active zone configurations and determine if their configurations are compatible. If the configurations are compatible, the fabrics join. The resulting configuration is a single zone set containing zone definitions from each fabric. If the configurations cannot merge, E_Ports that form the ISL for each director become segmented. The ports cannot transmit data frames between attached switches (class 2 or 3 traffic), but can transmit control frames (class F traffic). Zoning configurations are compatible if there are no duplicate domain IDs, the active zone set name is the same for each fabric (or switch in the fabric), and zones with the same names in each fabric have identical members. 70 Security Provisions