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Overview
Overview
NOTE: This chapter is applicable to 7210 SAS-X only. Multipoint bandwidth management is
supported only on 7210 SAS-X. It is not supported on 7210 SAS-R6.
In the 7210 SAS-X, multicast, unknown unicast, and broadcast traffic types are en-queued into a
set of eight ingress queues. SAP ingress traffic and network traffic which are been policied by
multipoint SAP ingress meters are en-queued into these queues before being replicated to
appropriate egress port. There are a set of eight queues per node which are shared by all the
services. Packets are en-queued to the appropriate queue based on the Forwarding Class (FC)
assigned to the packet by the SAP ingress classification.
The Multipoint Bandwidth Management CLI commands are used to configure a bandwidth policy
to manage different traffic types like broadcast, unknown unicast and multicast traffic. The
aggregate ingress rate can be configured to control the amount of multipoint traffic per node. For
each of the queues the user can specify the CIR/PIR and CBS/MBS to control the amount of traffic
and packet buffers allocated per FC respectively.
If a policy is not configured explicitly by the user, a default multipoint ingress policy is used by the
system. A default slope-policy is used by the system, but this policy cannot be configured by the
user.
The default slope policy for a multipoint queue:
high-slope
no shutdown
exit
low-slope
no shutdown
exit
Page 412
start-avg 70
max-avg 90
max-prob 75
start-avg 50
max-avg 75
max-prob 75
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
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