Extreme Networks Summit 300-48, Software User'S Manual

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132 Summit 300-48 Switch Software User Guide
Quality of Service (QoS)
Displaying QoS Profile Information
The QoS monitor can also be used to verify the QoS configuration and monitor the use of the QoS
policies that are in place. To display QoS information on the switch, use the following command:
show qosprofile <qosprofile>
Displayed information includes:
• QoS profile name
• Minimum bandwidth
• Maximum bandwidth
• Priority
• A list of all traffic groups to which the QoS profile is applied
Additionally, QoS information can be displayed from the traffic grouping perspective by using one or
more of the following commands:
•
show fdb permanent
— Displays destination MAC entries and their QoS profiles.
•
show switch
— Displays information including PACE enable/disable information.
•
show vlan
— Displays the QoS profile assignments to the VLAN.
•
show ports <portlist> info {detail}
— Displays information including QoS information for
the port.
Modifying a QoS Configuration
If you make a change to the parameters of a QoS profile after implementing your configuration, the
timing of the configuration change depends on the traffic grouping involved. The following rules apply:
• For destination MAC-based grouping (other than permanent), clear the MAC FDB using the
command
clear fdb
. This command should also be issued after a configuration is implemented, as
the configuration must be in place before an entry is made in the MAC FDB. For permanent
destination MAC-based grouping, re-apply the QoS profile to the static FDB entry, as documented.
You can also save and reboot the switch.
• For physical and logical groupings of a source port or VLAN, re-apply the QoS profile to the source
port or VLAN, as documented. You can also save and reboot the switch.
Traffic Rate-Limiting
The Summit 300-48 rate-limiting method is based on creating a rate limit, a specific type of access
control list. Traffic that matches a rate limit is constrained to the limit set in the access control list. Rate
limits are discussed in Chapter 10, “Access Policies”.