Brocade Fabric Watch Administrator's Guide Supporting Fabric OS v6.0.0 (53-1000601-01, October 2007)

6 Fabric Watch Administrator’s Guide

53-1000601-01

Fabric Watch components

FRU class areas

Table 4 lists Product Name areas in the FRU class and describes each area. Possible states for all

FRU-class areas are absent, faulty, inserted, on, off, ready, and up.

Supported FRU areas depend on the type of Brocade switches. For nonmodular switches such as

the Brocade 3250, 3850, 3900, 4100, 4900, 5000, 7500 and 7600, the slot and WWN areas are

not supported.

Performance Monitor class areas

Table 5 lists Product Name areas in the Performance Monitor class and describes each area.

Segmentation Changes Tracks the cumulative number of segmentation changes. Segmentation changes occur

due to:

• 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.

SFP State Changes Indicates whether the state of the SFP is normal or faulty, on or off. A faulty or off state

means that you must reinsert, turn on, or replace the SFP. Fabric Watch monitors only

the digital diagnostic SFP.

Note: SFPs connected to GbE ports are not monitored.

Zoning Changes 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 4 FRU class areas

Area Indicates

Slot State of a slot has changed.

Power Supply State of a power supply has changed.

Fan State of a fan has changed.

WWN State of a WWN card has changed.

TABLE 5 Performance Monitor class areas

Area Indicates

Customer Define Relies on performance monitor telnet commands. For more information on this area,

see the Fabric OS Command Reference.

Invalid Cyclic Redundancy

Checks (CRC)

Errors have been detected in the Fibre Channel frame. Invalid CRC messages occur

when the number of CRC errors in Fibre Channel frames for specific source ID (S_ID)

and destination ID (D_ID) pairs change. These messages can also be caused by dirty

or aging equipment and temperature fluctuations.

TABLE 3 Fabric class areas (Continued)

Area Description