HP AE370A - Brocade 4Gb SAN Switch 4/12 Administrator's Manual page 356

Table 83 Zoning database limitations (continued)
Fabric OS version
3.x
3.1.x
3.2.x
4.x, 4.1.x, 4.2.x
4.4.x
5.0.1
5.0.x
5.1.x
5.2.x
Before linking two switches together, it is important that you know the zone database limit of adjacent
switches. For example, when switches running Fabric OS v3.2, v4.4.0, or 5.1.x discover that the zone
merge database is larger than its pre-determined zone database size limit, they issue a reject notification
before symmetrically segmenting their own ends of the ISL, thereby preventing the new switch from joining
the fabric.
Symmetrical segmentation occurs when both ends of an ISL are shut down. Subsequently, no frames are
exchanged between those two switches.
Asymmetrical segmentation not only prevents frames from being exchanged between switches, but also
causes routing inconsistencies.
The best way to avoid either type of segmentation is to know the zone database size limit of adjacent
switches. The following tables provide the expected behavior based on different database sizes after a
zone merge is specified..
Table 84 Resulting database size: 0 to 96K
Receiver Fabric
OS 2.6
Initiator
Fabric OS 2.6/3.1 Join
Fabric OS 3.2 Join
Fabric OS Join
4.0/4.1/4.2
Fabric OS Join
4.3/4.4.0
Fabric OS Join
5.0.0/5.0.1
Fibre Channel Join
Router
XPath 7.3 Join
356 Administering Advanced Zoning
Maximum database size (KB))
128
96
256
128
256
256
256
256
1024
Fabric Fabric Fabric OS
OS 3.1 OS 3.2 4.0/4.1/4.2
Join Join Join
Join Join Join
Join Join Join
Join Join Join
Join Join Join
Join Join Join
Join Join Join
Fabric OS Fabric OS
4.3/4.4.0 5.0.0/
5.0.1/5.1.x
Join Join
Join Join
Join Join
Join Join
Join Join
Join Join
Join Join
Fibre XPath 7.3
Channel
Router
Join Join
Join Join
Join Join
Join Join
Join Join
Join Join
Join Join