Using cs_ctl auto mode at the chassis level, Using, Cs_ctl auto mode at the chassis level – Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) User Manual
Page 380: Considerations for using cs_ctl-based, Frame prioritization
1. Connect to the switch and log in to an account that has admin permissions.
2. Enable CS_CTL mode:
portcfgqos --enable [slot/]port csctl_mode
3. Enter y at the prompt to override QoS zone-based traffic prioritization.
Disabling CS_CTL-based frame prioritization on ports
When you disable CS_CTL-based frame prioritization, QoS zone-based traffic prioritization is restored
if it had been previously enabled.
1. Connect to the switch and log in to an account that has admin permissions.
2. Disable CS_CTL mode using the portCfgQos command with the --disable option:
portcfgqos --disable [slot/]port csctl_mode
Alternatively, you can use the --default option to disable CS_CTL mode and set QoS to auto-enable
(AE):
portcfgqos --default [slot/]port
Using CS_CTL auto mode at the chassis level
You can use the CS_CTL QoS mode options for the configureChassis command to change the
chassis-wide default mode, as in the following example.
switch:admin> configurechassis
Configure...
cfgload attributes (yes, y, no, n): [no]
Custom attributes (yes, y, no, n): [no]
system attributes (yes, y, no, n): [no]
fos attributes (yes, y, no, n): [no] y
CSCTL QoS Mode (0 = default; 1 = auto mode): (0..1) [0] 1
Set CSCTL QoS Mode to 1 to enable auto mode, establishing the settings shown in
379. Set CSCTL QoS Mode to 0 to disable auto mode and revert to default settings, shown in
on page 378.
This is a chassis-level configuration. It does not provide options to enable CS_CTL QoS on the ports.
Considerations for using CS_CTL-based frame prioritization
To use CS_CTL for QoS on a given port for a given flow, proceed with the following steps.
1. Determine whether to use the default mode (refer to
on page 378) or the auto mode (refer
on page 379). No choice results in the default mode.
2. In either case, ensure that the switch port connected to the initiator host and the switch port
connected to the target host have csctl_mode enabled, as in
Disabling CS_CTL-based frame prioritization on ports
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Fabric OS Administrators Guide
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