Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 445
• 8-port Ethernet Adapter card
• 8-port Gigabit Ethernet Adapter card
• Packet Microwave Adapter card
• 10-port 1GigE/1-port 10GigE X-Adapter card
• 2-port 10GigE (Ethernet) Adapter card
• 2-port 10GigE (Ethernet) module
• Ethernet ports on the 7705 SAR-A, 7705 SAR-Ax, 7705 SAR-H, 7705 SAR-Hc,
7705 SAR-M, 7705 SAR-W, and 7705 SAR-Wx
On the 6-port Ethernet 10Gbps Adapter card and the 7705 SAR-X, scheduler-mode is
permanently set to support 4-priority and is not user-configurable.
With profiled (or rate-based) scheduling, both in-profile and out-of-profile scheduling are
supported. Packets with a flow rate that is less than or equal to the CIR value of a queue are
scheduled as in-profile. Packets with a flow rate that exceeds the CIR value but is less than
the PIR value of a queue are scheduled as out-of-profile. In-profile traffic has strict priority
over out-of-profile traffic.
Profiled scheduling does not take queue type into consideration. With queue type-based
scheduling, queues are divided into two categories – those that are serviced by the Expedited
scheduler and those that are serviced by the Best Effort scheduler. The Expedited scheduler
has precedence over the Best Effort scheduler.
Four-priority scheduling combines both profiled and queue type-based scheduling. The
combination provides four scheduling priorities. Packets are scheduled in the following order,
in strict priority fashion:
• Expedited in-profile packets
• Best-effort in-profile packets
• Expedited out-of-profile packets
• Best-effort out-of-profile packets
Default profile —8-port Ethernet Adapter card
Note: 16-priority is the default scheduling option on the 8-port Gigabit Ethernet Adapter
card, 10-port 1GigE/1-port 10GigE X-Adapter card, 2-port 10GigE (Ethernet) Adapter card,
2-port 10GigE (Ethernet) module, Packet Microwave Adapter card, 7705 SAR-M,
7705 SAR-H, 7705 SAR-Hc, 7705 SAR-A, 7705 SAR-Ax, 7705 SAR-W, and 7705 SAR-Wx
Ethernet ports. These cards, modules, and ports support 16-priority scheduling, but not
profiled or 4-priority scheduling. In addition, 16-priority scheduling is not supported on the
8-port Ethernet card. For information on 16-priority scheduling, refer to the
7705 SAR Quality of Service Guide, “QoS Policies“.
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