Extreme 3804 User Guide

Summit24e3 Switch Installation and User Guide

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prescribe the bandwidth management and priority handling for that traffic grouping. This level of 
packet filtering has no impact on performance.

QoS profiles can be assigned to destination MAC addresses. MAC-based traffic groupings are 
configured using the following command:

create fdbentry <mac_address> vlan <name> [blackhole | port <portlist> | dynamic] 

qosprofile <qosprofile>

The MAC address options, defined below, are as follows:

Permanent

Dynamic

Blackhole

Permanent MAC addresses can be assigned a QoS profile whenever traffic is destined to the MAC 
address. This can be done when you create a permanent FDB entry. For example:

create fdbentry 00:11:22:33:44:55 vlan default port 4 qosprofile qp2

Dynamic MAC addresses can be assigned a QoS profile whenever traffic is destined to the MAC 
address. For any port on which the specified MAC address is learned in the specified VLAN, the port is 
assigned the specified QoS profile. For example:

create fdbentry 00:11:22:33:44:55 vlan default dynamic qosprofile qp3

The QoS profile is assigned when the MAC address is learned. If a client’s location moves, the assigned 
QoS profile moves with the device. If the MAC address entry already exists in the FDB, you can clear 
the forwarding database so that the QoS profile can be applied when the entry is added again. Use the 
following command to clear the FDB:

clear fdb

Using the 

blackhole

 option configures the switch to not forward any packets to the destination MAC 

address on any ports for the VLAN specified. The 

blackhole

 option is configured using the following 

command:

create fdbentry 00:11:22:33:44:55 vlan default blackhole

To verify any of the MAC-based QoS settings, use either the command

show fdb permanent 

or the command

show qosprofile <qosprofile>