Explicit Class Of Service (802.1P And Diffserv) Traffic Groupings - Extreme Networks ExtremeWare 7.2e Installation And User Manual

Traffic Groupings
Dynamic MAC Addresses
Dynamic MAC addresses can be assigned a QoS profile whenever traffic is coming from or going to the
MAC address. This is done using the following command:
create fdbentry [<mac_address> | any-mac] vlan <vlan name> dynamic ingress-qosprofile
<qosprofile>{ingress-qosprofile <inqosprofile>}
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 ingress-qosprofile
"QP1" qosprofile qp2
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
Blackhole MAC Address
Using the option configures the switch to not forward any packets to the destination MAC
blackhole
address on any ports for the VLAN specified. The option is configured using the following
blackhole
command:
create fdbentry <mac_address> vlan <vlan name> blackhole {source-mac | dest-mac |
both}
For example:
create fdbentry 00:11:22:33:44:55 vlan default blackhole
Verifying MAC-Based QoS Settings
To verify any of the MAC-based QoS settings, use either the command
show fdb permanent
or the command
show qosprofile {<qosprofile>} {port <portlist>}

Explicit Class of Service (802.1p and DiffServ) Traffic Groupings

This category of traffic groupings describes what is sometimes referred to as explicit packet marking, and
refers to information contained within a packet intended to explicitly determine a class of service. That
information includes:
• IP DiffServ code points, formerly known as IP TOS bits
• Prioritization bits used in IEEE 802.1p packets
An advantage of explicit packet marking is that the class of service information can be carried
throughout the network infrastructure, without repeating what can be complex traffic grouping policies
at each switch location. Another advantage is that end stations can perform their own packet marking
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