H3C Technologies H3C S5830V2 Series Switches - Manual (Page 104)

93
3. After the merge process initiated by Switch A is complete, Switch B synchronizes changes in its
local database arising from the merge to the entire fabric by initiating a merge process to all its
neighbors.
4. Two 1-way merge processes can ensure data consistency between Switch A and Switch B.
NOTE:
Consistent active zone sets among switches can be achieved by a merge. Consistent zone databases
achieved after a merge, however, require all participating switches to be configured with complete merge.
Zone merge rules
Table 5 Zone merge rules
Local database Neighbor database Merge status Merge result
The databases contain zone sets with the same name,
but zones in these zone sets have different names.
Successful
The union of the local database
and neighbor database. Zone sets
with the same name are merged.
The databases contain zone sets with different names. Successful
The union of the local database
and neighbor database. All zone
sets with different names are
retained.
The databases contain zones or zone aliases with
different names.
Successful
The union of the local database
and neighbor database. All zone
sets or zone aliases with different
names are retained.
The databases contain zones or zone aliases with the
same name but different member ports.
Failed
Both databases remain
unchanged.
Empty Contain data Successful
The neighbor database overwrites
the local database.
Contain data Empty Successful
The local database overwrites the
neighbor database.
NOTE:
•
If two switches have active zone sets with different names, the larger name obtained by comparison of
strings acts as the name of the active zone set after merging.
• If the active zone sets on two switches fail to merge, the two switches isolate their connecting link by
bringing down the relevant ports in the VSAN, in addition to keeping their zone databases unchanged.
Access control
If a server wants to access a disk device through the name service, the server needs to determine whether
the server and the disk device are in one zone of the active zone set. Members in the same zone can
access each other. Otherwise, they cannot access each other.