In 7210 SAS-R6 and 7210 SAS-R12, 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 specific IMM. For example, if an ingress policy is configured with a policer of PIR 100 Mbps, 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 100 Mbps. 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 100 Mbps for a total of 200 Mbps.
In 7210 SAS-R6 and 7210 SAS-R12, 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 100 Mbps, 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-R6 and 7210 SAS-R12, 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 100 Mbps, 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-R6 and 7210 SAS-R12, when operating in port-based queuing mode, the access egress QoS policy is applied to access ports and the policy parameters are applied to all the ports that are members of the LAG (all access ports get the full SLA). For example, if an access egress policy is configured with a shaper of PIR 100 Mbps, each port gets 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 use the entire SLA. The disadvantage is that the overall SLA can be exceeded if the flows span multiple ports. Access egress policy override parameters configured for the primary port of the LAG are applied to all the member ports of the LAG.