Configuring The Scheduler Hierarchy For Hashed Load Balancing In 802.3Ad Link Aggregation Groups - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

JunosE 11.3.x Quality of Service Configuration Guide
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Configuring the Scheduler Hierarchy for Hashed Load Balancing in 802.3ad Link
Aggregation Groups
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Documentation
182
specify the "ip queue traffic-class best-effort" rule, so those queues are reported in
the interface hierarchy. The lag-default QoS profile does not specify this rule by default.
Do not attach QoS profiles to IP or VLAN subinterfaces in a LAG that contain
downreferences (that is, rules for S-VLAN or Ethernet nodes or queues). QoS profiles
attached at subinterfaces above a LAG that also include downreference create an
asymmetric scheduler hierarchy. For example, one Ethernet port might be shaped and
not another.
Also, if the QoS profile specifies only Ethernet, then the traffic sent to the subinterface
might be only partially affected by the QoS profile, or not at all. The traffic can be
allocated to another port entirely.
Subscriber Load Balancing for 802.3ad Link Aggregation Groups Overview on page 178
Configuring the Scheduler Hierarchy for Subscriber Load Balancing in 802.3ad Link
Aggregation Groups on page 183
Configuring Load Rebalancing for 802.3ad Link Aggregation Groups on page 184
The type of load balancing that the system performs depends on the configuration of
the scheduler hierarchy in the QoS profile.
To configure the scheduler hierarchy for hashed load balancing:
Configure a QoS profile.
1.
host1(config)#qos-profile hashed-lag
Configure the nodes and queues, including an Ethernet queue.
2.
host1(config-qos-profile)#ethernet queue traffic-class best-effort
host1(config-qos-profile)#ethernet queue traffic-class tc1
host1(config-qos-profile)#ethernet queue traffic-class tc2
Create the LAG interface and attach the QoS profile.
3.
host1(config)#interface lag lg1
host1(config-if)#qos-profile hashed-lag
QoS for 802.3ad Link Aggregation Interfaces Overview on page 175
Hashed Load Balancing for 802.3ad Link Aggregation Groups Overview on page 177
interface lag
node
qos-profile
queue
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