Symmetrical segmentation occurs when both ends of an ISL are shut down. Subsequently, no frames are
exchanged between the two switches.
Asymemetrical 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.
Table 36
after a zone merge is specified.
Table 36
Resulting database size: 0 to 96K
Receiver
FOS 2.6
Initiator
FOS 2.6, 3.1
Join
FOS 3.2
Join
FOS 4.0, 4.1,
Join
4.1
FOS 4.3, 4.4.0
Join
FOS 5.5.0, 5.0.1 Join
Fibre Channel
Join
Router
XPath 7.3
Join
Table 37
Resulting database size: 96K to 128K
Receiver
FOS 2.6
Initiator
FOS 2.6, 3.1
Segment
FOS 3.2
Segment
FOS 4.0, 4.1,
Segment
4.1
FOS 4.3, 4.4.0
Segment
FOS 5.5.0, 5.0.1 Segment
Fibre Channel
Join
Router
XPath 7.3
Segment
through
Table 39
provide the expected behavior based on different database sizes
FOS 3.1
FOS 3.2
FOS 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
FOS 3.1
FOS 3.2
FOS 4.0,
4.1, 4.2
Segment
Segment
Segment
Segment
Join
Join
Segment
Segment
Join
Segment
Join
Join
Segment
Join
Join
Join
Join
Join
Segment
Segment
Join
FOS 4.3,
FOS 5.5.0,
4.4.0
5.0.1
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
FOS 4.3,
FOS 5.5.0,
4.4.0
5.0.1
Segment
Segment
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Fabric OS 5.x administrator guide 189
Fibre
XPath
Channel
7.3
Router
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Fibre
XPath
Channel
7.3
Router
Join
Segment
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join
Join