Lag And Qos Policies On 7210 Sas-R6 - Alcatel-Lucent 7210 SAS M Interface Configuration Manual

LAG
100Mbps, for a SAP configured on a LAG with two ports, then the policer limits the traffic
entering the system through the two ports to a maximum of 100Mbps.
In 7210 SAS-X, SAP egress QoS policy shaper parameters are applied to all the ports that are
members of the LAG (all ports get the full SLA). For example, if an SAP egress policy is
configured with a shaper of PIR 100Mbps, each port would get a PIR of 100 Mbps. The advantage
of this method over a scheme where the PIR is divided equally among all the member ports of the
LAG is that, a single flow can uses the entire SLA. The disadvantage is that the overall SLA can
be exceeded if the flows span multiple ports.
In 7210 SAS-X, network port egress QoS policy shaper parameters are applied to all the ports that
are members of the LAG (all ports get the full SLA). For example, if an network port egress policy
is configured with a shaper of PIR 100Mbps, each port would get a PIR of 100 Mbps. The
advantage of this method over a scheme where the PIR is divided equally among all the member
ports of the LAG is that, a single flow can uses the entire SLA. The disadvantage is that the overall
SLA can be exceeded if the flows span multiple ports.

LAG and QoS policies on 7210 SAS-R6

In 7210 SAS-R6, a SAP ingress QoS policy or network port ingress QoS policy or network IP
interface ingress QoS policy is applied to the aggregate traffic that enters through all the ports on a
IMM. If the LAG has member ports on different IMMs, then the policy is created for each IMM
and is applied to the aggregate traffic that enters through all the ports on a given IMM. For
example, if an ingress policy is configured with a policier of PIR 100Mbps, for a SAP configured
on a LAG with two ports, then the policer limits the traffic entering through the two ports of the
IMM to a maximum of 100Mbps. If the LAG has two ports on 2 different IMMs, then policy is
applied each IMM individually, and the policer on each IMM allows a maximum of 100Mbps for
a total of 200Mbps.
In 7210 SAS-R6, SAP egress QoS policy shaper parameters are applied to all the ports that are
members of the LAG (all ports get the full SLA), irrespective of whether they are located on a
single IMM or two different IMMs. For example, if an SAP egress policy is configured with a
shaper of PIR 100Mbps, each port would get a PIR of 100Mbps. The advantage of this method
over a scheme where the PIR is divided equally among all the member ports of the LAG is that, a
single flow can uses the entire SLA. The disadvantage is that the overall SLA can be exceeded if
the flows span multiple ports.
In 7210 SAS-R6, network port egress QoS policy shaper parameters are applied to all the ports
that are members of the LAG (all ports get the full SLA), irrespective of whether they are located
on a single IMM or two different IMMs.. For example, if an network port egress policy is
configured with a shaper of PIR 100Mbps, each port would get a PIR of 100 Mbps. The advantage
Page 38
Guide
7210 SAS M, T, X, R6, Mxp Interface Configuration