QoS and QoS Policies
88
Quality of Service Guide
3HE 11014 AAAC TQZZA Edition: 01
When the aggregate mode is used, one aggregate rate sets the rate on all adapter
cards. When the destination mode is used, the multipoint shaper is used to set the
fabric shaping rate for traffic switched to a LAG SAP.
3.2.6 Configurable Ingress Shaping to Fabric (Access
and Network)
The use of fabric profiles allows the ingress (to the fabric) shapers to be
user-configurable for access ingress and network ingress traffic.
For the 7705 SAR-8 and 7705 SAR-18, the maximum rates are:
• 1 Gb/s for the 7705 SAR-8 with CSMv2
• 2.5 Gb/s for the 7705 SAR-8 Shelf V2 with CSMv2
• 1 Gb/s or 2.5 Gb/s for the 7705 SAR-18 (12 MDA slots)
• 10 Gb/s for the 7705 SAR-18 (4 XMDA slots)
For information about fabric shapers on the 7705 SAR-M, 7705 SAR-H,
7705 SAR-Hc, 7705 SAR-A, 7705 SAR-Ax, 7705 SAR-W, and 7705 SAR-X, see
Fabric Shaping on the Fixed Platforms (Access and Network).
By allowing a rate of 1 Gb/s or higher to be configured from any adapter card to the
fabric, the fabric may become congested. Therefore, the collection and display of
fabric statistics are provided. These statistics report about the fabric traffic flow and
potential discards. Refer to the 7705 SAR Interface Configuration Guide,
“Configuring Adapter Card Fabric Statistics”, “Configuration Command Reference”,
and “Show, Monitor, Clear, and Debug Command Reference” for information on how
to configure, show, and monitor fabric statistics on an adapter card.
Note: Even though the multipoint shaper is used to set the fabric shaping rate for traffic
switched to a LAG SAP, it is the per-destination unicast counters that are incremented to
show the fabric statistics rather than the multipoint counter. Only the fabric statistics of the
active port of the LAG are incremented, not the standby port.
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