Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 195)

Multi-Service IronWare QoS and Traffic Management Configuration Guide 181
53-1003037-02
Hierarchical QoS (HQoS) for 8x10G modules
5
Configuring HQoS
The HQoS configuration procedure goes through the following phases:
• Create scheduling entities and configure forwarding profiles for them.
• Associate the scheduling entities with the forwarding profiles.
• Configure the match criteria for each node.
• Apply the organized scheduler policy to an interface.
FIGURE 15 HQoS example
The rate shaper of a scheduler flow will limit the amount of traffic that can be scheduled from that
scheduler flow. Therefore, the combination of scheduler flow rate shapers and scheduler element
allows for the sharing of bandwidth among the respective scheduler flows.
Configuration considerations
• HQoS is not supported for broadcast, multicast, and unknown unicast traffic
• HQoS is not supported on the interface of a LAG
• If HQoS is enabled on a interface, then the port QoS commands (port shaper configurations)
cannot be executed
• Egress mirroring is degraded when HQoS is enabled
Queues
queuing per
Level 3
Service
(VLAN)
Level 2
Customer
(VLAN group)
Level 0
Physical Port
(10GE)
Level 1
Logical Port
DSL to CPE1
2 Mb/s shaper
(VLAN group
shaper)
DSL to CPE2
1 Mb/s shaper
DSL to CPE3
2 Mb/s shaper
1GE to DSLAM2
1 Gb/s shaper
1GE to DSLAM1
1 Gb/s shaper
10GE to Access Switch1
DSL to CPE4
1 Mb/s shaper
0.5 Mb/s
shaper
VLAN#1,
VLAN#2
10GE 1/1
Logical#2
Logical#1
Scheduler Flow
Queue
Scheduler Element
Rate shaper
<10GE 1/1,
VLAN#8,
priority 7>
7
6
5
4
3
2
1
0 SVLAN#8
VLAN#8,...
7
6
5
4
3
2
1
0
15 Mb/s
VLAN
100
CoS1
CoS2
CoS3
CoS4
7,6
5,4
3,2
1,0
2 Mb/s
’
’
’
CoS1
CoS2
CoS3
CoS4
7,6
5, 4
3, 2
1, 0
2 Mb/s
’
’
’
VLAN
200
mixed
2
40
20
20
2
40
20
20