Multicast And Unicast Traffic Distribution - Alcatel-Lucent OmniSwitch 9900 Series Network Configuration Manual

Configuring QoS
QSet Profile 5 (8 WRR)
Queue Queue
Scheduling Weight
ID Type
1 WRR7 WRR
2 WRR6 WRR
3 WRR5 WRR
4 WRR4 WRR
5 WRR3 WRR
6 WRR2 WRR
7 WRR1 WRR
8 WRR0 WRR
WRED Profiles
Weighted Random Early Detection (WRED) is a queue management function that monitors the virtual
output queues of the switch to provide early detection and notification of queue congestion. Note that
WRED is only supported on the OmniSwitch 6900. For more information about WRED and configuring
WRED profiles, see

Multicast and Unicast Traffic Distribution

The following Class of Service (CoS) model for unicast and multicast traffic is applied when either the
default QSet profile (QSP 1) or the default Data Center Bridging (DCB) profile 8 is the active profile for
the port.
Cos 0 - Lower Priority MC (0-3) = 10
Cos 1 - Higher Priority MC (4-7) = 52
Cos 3 - All Other Unicast UC(0-7) = 108
Cos 7 - CPU Generated Packets = 127 (maximum weight)
For example:
•
When sending two streams of 100% MC Lower Priority and 100% MC Higher Priority, the distribution
should be 10 and 50 packets, which is approximately 17% of Lower Priority MC and 83% of Higher
Priority.
•
When sending Lower Priority MC 100% and UC 100%, the distribution is 9% of MC and 91% of UC.
•
When sending Higher Priority MC 100% and UC 100%, the distribution is 32% of MC and 68% of
UC.
OmniSwitch AOS Release 8 Network Configuration Guide
802.1p ToS
1 7
1 6
1 5
1 4
1 3
1 2
1 1
1 0
"OmniSwitCongestion Avoidance" on page
DSCP Notes
7 7.x WRR7 shares bandwidth with
other queues receiving traffic.
6 6.x WRR6 shares bandwidth with
other queues receiving traffic.
5 5.x, WRR5 shares bandwidth with
other queues receiving traffic.
4 4.x WRR4 shares bandwidth with
other queues receiving traffic.
3 3.x WRR3 shares bandwidth with
other queues receiving traffic.
2 2.x WRR2 shares bandwidth with
other queues receiving traffic.
1 1.x WRR1 shares bandwidth with
other queues receiving traffic.
0 0 WRR0 shares bandwidth with
other queues receiving traffic.
26-19.
December 2017
Congestion Management
page 26-15