Specifications

Traffic Groupings
ExtremeWare XOS 11.0 Concepts Guide 117
By doing so, the hardware queue used to transmit a packet determines the DiffServ value replaced in
the IP packet.
To view currently configured DiffServ information, use the following command:
show diffserv [examination | replacement]
The following shows sample output of the show diffserv replacement command:
QOSProfile->CodePoint mapping:
QP1->00
QP2->08
QP3->16
QP4->24
QP5->32
QP6->40
QP7->48
QP8->56
DiffServ example. In this example, we use DiffServ to signal a class of service throughput and assign
any traffic coming from network 10.1.2.x with a specific DiffServ code point. This allows all other
network switches to send and observe the Diffserv code point instead of repeating the same QoS
configuration on every network switch.
To configure the switch, follow these steps:
1 Using ACLs, assign a traffic grouping for traffic from network 10.1.2.x to QP3:
configure access-list qp3sub any
The following is a sample policy file example:
#filename: qp3sub.pol
entry QP3-subnet {
if {
source-address 10.1.2.0/24
} then {
Qosprofile qp3;
replace-dscp;
}
2 Configure the switch so that other switches can signal calls of service that this switch should observe
by entering the following:
enable diffserv examination ports all
NOTE
The switch only observes the DiffServ code points if the traffic does not match the configured access
list. Otherwise, the ACL QoS setting overrides the QoS DiffServ configuration
Physical and Logical Groupings
Two traffic groupings exist in this category:
• Source port
• VLAN