Brocade Fabric Watch Administrator's Guide - Supporting Fabric OS v7.0.x (53-1002153-02, March 2012)

56 Fabric Watch Administrator’s Guide
53-1002153-02
Port class guidelines and default settings
7
NOTE
Only the Packet loss, State changes, and Utilization areas are supported on the VE_Port.
Port class guidelines and default settings
There are different recommendations and default settings for the physical port, the E_Port, and the
FOP_Port and FCU_Port. Refer to the following sections and plan carefully before you begin
configuring the port:
• “Physical port setting guidelines”
• “E_Port subclass setting guidelines”
• “FOP_Port and FCU_Port subclass setting guidelines”
• “VE_Port class default settings”
NOTE
E_Ports and VE_Ports are not supported in Access Gateway mode.
Physical port setting guidelines
It is recommended that you use the default settings listed in Table 16 for most Port class areas.
Consider the Port class to be a superset containing the E_Port, FOP_Port, and FCU_Port
subclasses. If you make a change to a default setting for an area in the Port class, it applies to all of
the subclasses. This is convenient if you have determined that changes you plan to make to the
default settings for the subclasses are the same for certain areas. In this case, you only need to
make the changes to the Port class. Note, however, that if you make a change to one of the
subclasses, that change overrides the Port class setting.
Protocol errors (PE) The number of times a protocol error occurs on a port. Invalid state due to LRR on
an online link. Occasionally these errors occur due to software glitches. Persistent
errors occur due to hardware problems.
Received packets (RXP) The percentage of maximum bandwidth consumed in packet receipts.
State changes (ST)
(Port and VE_Port)
The state of the port has changed for one of the following reasons:
• The port has gone offline.
• The port has come online.
• The port is faulty.
Transmitted packets (TXP) The percentage of maximum bandwidth consumed in packet transmissions.
Trunk utilization
(E_Port, FCU_Port, and
FOP_Port)
The percent of utilization for the trunk at the time of the last poll.
Utilization (VE_Port only) The percent of utilization for the trunk at the time of the last poll.
Link reset The ports on which the number of link resets exceed the specified threshold
value.
TABLE 15 Port class areas (Continued)
Area Description