Brocade Communications Systems Network Advisor 12.0.0, User Manual

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952 Brocade Network Advisor SAN User Manual
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Policy monitor overview
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Fabric policy monitors
Fabric policy monitors enable you to set the following policy monitors on SAN (refer to “Adding a
policy monitor” on page 959):
•
Check zoning status — This fabric policy monitor enables you to determine if zoning is enabled
or disabled on the fabric.
Zoning plays a key role in the management of device communication. When you enforce
zoning, devices not in the same zone cannot communicate. Zoning provides protection from
disruption in the fabric (putting bounds on the scope of RSCNs). The best practice is always to
enable zoning.
Rule Violation Fix — If the policy monitor report shows a violation, the Administrator can use the
Zoning dialog box (Configure > Zoning > Fabric) to fix the violation. Refer to
“Zoning” on
page 713.
For example, if you use the policy monitor to make sure that the zoning status is enabled, you
can fix the violation through the Zoning dialog box by locating the target fabric, defining a zone
configuration, and activating the zone configuration.
•
Check that all zones belong to at least one zone config — This fabric policy monitor enables you
to determine if there are any orphaned zones in the fabric zone database.
Too many orphaned zones can fill up the fabric zone database and complicate other ongoing
administrative tasks.
Rule Violation Fix — If the policy monitor report shows a violation, the Administrator can use the
Zoning dialog box (Configure > Zoning > Fabric) to fix the violation. Refer to
“Zoning” on
page 713.
For example, the Administrator can fix the violation through the Zoning dialog box using one of
the following methods:
-
Defining a new zone configuration and moving the orphaned zones to the new zone
configuration.
-
Moving the orphaned zones to an existing zone configuration.
-
Cleaning up unused orphaned zones.
•
Check the number of initiator ports zoned to each storage port — This fabric policy monitor
enables you to determine the total number of initiator ports zoned to each storage port.
When too many initiators share the same connection (share the bandwidth of the storage
port), congestion can occur.
There are four possible zone member types: device port WWN, device node WWN, (D,I), and
Fabric Assigned WWN.
-
Device port WWN — The application counts the connected device ports and uses them for
the ratio calculation.
-
Device node WWN zone member — The application finds the corresponding device ports
and uses them for the ratio calculation.
-
D,I — If the switch port is connected to a device, the application finds the connected device
ports and uses them for the ratio calculation.
-
Fabric Assigned WWN — If the switch or Access Gateway (AG) port has a connected device
port, the application finds the connected device ports and uses them for the ratio
calculation.