HP Surestore 64 - Director Switch Planning Manual page 84

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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.
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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