HP StorageWorks 1606 Brocade Fabric OS Administrator's Guide v6.3.0 (53-100133 - Page 467

High availability considerations for bottleneck detection, Enabling bottleneck detection on a port

Page 467 highlights

Bottleneck detection 18 High availability considerations for bottleneck detection The bottleneck detection configuration (ports where enabled and thresholds) is maintained across a failover or reboot; however, bottleneck statistics collected are lost. Upgrade and downgrade considerations for bottleneck detection The configuration files for bottleneck detection are persistent across firmware upgrades and downgrades. If you downgrade to a firmware version earlier than Fabric OS v6.3.0, bottleneck detection is no longer supported. If you later upgrade to Fabric OS 6.3.0 or later, the switch attempts to enable the bottleneck detection settings that were enabled before the downgrade. Virtual Fabrics considerations for bottleneck detection If a port on which bottleneck detection is enabled is moved out of a logical switch, the bottleneck detection configuration is retained by the logical switch. If the port is returned to the logical switch, bottleneck detection is automatically enabled for the port with the same settings as before. Access Gateway considerations for bottleneck detection If you enable bottleneck detection on an F_Port to which an Access Gateway is attached, you do not get information about which device is causing a bottleneck, because devices are not directly connected to this port. To detect bottlenecks on an Access Gateway, enable bottleneck detection on the Access Gateway to which the devices are actually connected. Enabling bottleneck detection on a port When you enable bottleneck detection, you also determine whether RASlog alerts are to be sent when the bottleneck conditions at a port exceed a specified threshold. 1. Connect to the switch to which the target port belongs and log in as admin. 2. Enter the bottleneckmon --enable command to enable bottleneck detection on an F_Port or FL_Port. bottleneckmon --enable [ -alert ] [ -thresh threshold ] [ -time window ] [ -qtime quiet_time ] [slot/]portlist [[slot/]portlist]... If you do not specify the alert parameter, alerts are not sent, but you can view a history of bottleneck conditions for the port as described in "Displaying history of bottlenecks on a port" on page 427. If you do not specify the alert parameter, the thresh, time, and qtime parameters are ignored. NOTE Best practice is to use the default values for the thresh (0.1), time (300), and qtime (300) parameters. If you change the time parameter, you should use a setting that is 300 or higher. Fabric OS Administrator's Guide 425 53-1001336-01

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Fabric OS Administrator’s Guide
425
53-1001336-01
Bottleneck detection
18
High availability considerations for bottleneck detection
The bottleneck detection configuration (ports where enabled and thresholds) is maintained across
a failover or reboot; however, bottleneck statistics collected are lost.
Upgrade and downgrade considerations for bottleneck detection
The configuration files for bottleneck detection are persistent across firmware upgrades and
downgrades.
If you downgrade to a firmware version earlier than Fabric OS v6.3.0, bottleneck detection is no
longer supported. If you later upgrade to Fabric OS 6.3.0 or later, the switch attempts to enable the
bottleneck detection settings that were enabled before the downgrade.
Virtual Fabrics considerations for bottleneck detection
If a port on which bottleneck detection is enabled is moved out of a logical switch, the bottleneck
detection configuration is retained by the logical switch. If the port is returned to the logical switch,
bottleneck detection is automatically enabled for the port with the same settings as before.
Access Gateway considerations for bottleneck detection
If you enable bottleneck detection on an F_Port to which an Access Gateway is attached, you do
not get information about which device is causing a bottleneck, because devices are not directly
connected to this port. To detect bottlenecks on an Access Gateway, enable bottleneck detection
on the Access Gateway to which the devices are actually connected.
Enabling bottleneck detection on a port
When you enable bottleneck detection, you also determine whether RASlog alerts are to be sent
when the bottleneck conditions at a port exceed a specified threshold.
1.
Connect to the switch to which the target port belongs and log in as admin.
2.
Enter the
bottleneckmon
--
enable
command to enable bottleneck detection on an F_Port or
FL_Port.
bottleneckmon --enable
[
-alert
] [
-thresh
threshold
] [
-time
window
] [
-qtime
quiet_time
]
[
slot
/
]portlist
[[
slot
/
]
portlist
]...
If you do not specify the
alert
parameter, alerts are not sent, but you can view a history of
bottleneck conditions for the port as described in
“Displaying history of bottlenecks on a port”
on page 427.
If you do not specify the
alert
parameter, the
thresh
,
time
, and
qtime
parameters are ignored.
NOTE
Best practice is to use the default values for the
thresh
(0.1),
time
(300), and
qtime
(300)
parameters. If you change the
time
parameter, you should use a setting that is 300 or higher.