7705 SAR Interfaces
110
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
The following restrictions apply to egress MSS LAG.
• The shaper policy for all LAG ports in a LAG must be the same and can only be
configured on the primary LAG port member.
The following limitations apply to adaptive QoS (distribute mode).
• The QoS rates for an ingress LAG using adaptive QoS are only distributed
among the active links when a non-default shaper group is used. If a default
shaper group is used, the full QoS rates are configured for each port in the LAG
as if link mode is being used.
• The QoS rates for an ingress or egress LAG using adaptive QoS will not be
distributed among the active links when a user sets the PIR/CIR on a SAP
queue, or aggregate rate/CIR on a SAP scheduler or MSS scheduler, to the
default values (max and 0).
• A port on an 8-port Ethernet Adapter card, version 2, can be added to a LAG
group but does not support H-QoS or MSS. If distributed mode is applied to a
LAG SAP with a port on an 8-port Ethernet Adapter card, version 2, the H-QoS
and MSS bandwidth distribution is determined based on all active links including
the 8-port Ethernet Adapter card, version 2 port. However, the H-QoS or MSS
bandwidth share for this port cannot be configured. Ports on other adapter
cards, modules, or platforms will have their H-QoS or MSS bandwidth share
configured.
3.2.13.3.1 Adaptive QoS Examples (Distribute Mode)
The following examples can be used as guidelines for configuring adapt-qos
distribute.
SLA distribution for SAP queue-level PIR/CIR configuration
• Configure a qos sap-ingress policy with a queue ID of 2, a PIR of 200 Mb/s,
and a CIR of 100 Mb/s. Assign it to an active/active LAG SAP with five active
ports.
• For each port, the PIR/CIR configuration of SAP queue 2 is calculated so that
the PIR = 40 Mb/s and CIR = 20 Mb/s.
• If one link goes down, the PIR/CIR configuration of SAP queue 2 on each active
port is recalculated so that the PIR = 50 Mb/s and CIR = 25 Mb/s.
SLA distribution for ingress/egress (H-QoS)
• Create a LAG SAP with two different ports (for example, port 1/1/1 and port
1/1/2) in a LAG subgroup.
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