Brocade Network Advisor SAN + IP User Manual v12.1.0 - Manual (Page 1837)

1796 Brocade Network Advisor SAN + IP User Manual
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MAPS monitoring categories
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Fabric monitoring category
The Fabric category groups areas of potential problems arising between devices, such as zone
changes, fabric segmentation, downed E_Ports, fabric reconfiguration, domain ID changes, and
fabric logins.
Table 176 lists measures in the Fabric category and describes each measure.
Missing SFPs 1 (MISSING_SFP) Ports that are missing SFP transceiver.
Error Ports 1 (ERR_PORTS) Ports with errors.
1. Marginal ports, faulty ports, error ports, and missing SFP transceivers are calculated as a percentage of the
physical ports (excluding FCoE and VE_Ports).
TABLE 176 Fabric measures
Measure Description
Domain ID changes (DID_CHG) Monitors forced domain ID changes. Forced domain ID changes occur when
there is a conflict of domain IDs in a single fabric and the principal switch
must assign another domain ID to a switch.
Fabric logins (FLOGI) Activates when ports and devices initialize with the fabric.
Fabric reconfigurations (FAB_CFG) Tracks the number of reconfigurations of the fabric. Fabric reconfiguration
occurs when:
•
Two fabrics with the same domain ID are connected.
•
Two fabrics are joined.
•
An E_Port or VE_Port goes offline.
•
A principal link segments from the fabric.
Down E_Port (EPORT_DOWN) Tracks the number of times that an E_Port or VE_Port goes down. E_Ports
and VE_Ports go down each time you remove a cable or an SFP transceiver
(where there are SFP transceiver failures or transient errors).
Segmentation changes (FAB_SEG) Tracks the cumulative number of segmentation changes. Segmentation
changes occur because of one of the following:
•
Zone conflicts.
•
Incompatible link parameters. During E_Port and VE_Port initialization,
ports exchange link parameters, and incompatible parameters result in
segmentation. This is a rare event.
•
Domain conflicts.
•
Segmentation of the principal link between two switches.
Zone changes (ZONE_CHG) Tracks the number of zone changes. Because zoning is a security provision,
frequent zone changes might indicate a security breach or weakness. Zone
change messages occur whenever there is a change in zone configurations.
TABLE 175 Switch status measures
Measure Description