SYSTEMS FOR SCHEDULING THE TRANSMISSION OF DATA IN A NETWORK DEVICE
First Claim
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1. A system for scheduling traffic, including data units, in a network device, the system comprising:
- a first scheduler, including a plurality of queues to store the data units, configured to perform quality of service (QoS) scheduling on a per-data unit basis, and to route the traffic to an asynchronous transfer mode (ATM) scheduler, connected in series to the first scheduler, and configured to schedule and shape the routed traffic.
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Abstract
In a network device, a line card includes a first scheduler configured to perform scheduling for data units of a first type and a second scheduler that is connected in series to the first scheduler and configured to perform scheduling for data units of a second type. The schedulers may be configured in a variety of ways to achieve certain data unit flow characteristics.
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Citations
58 Claims
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1. A system for scheduling traffic, including data units, in a network device, the system comprising:
a first scheduler, including a plurality of queues to store the data units, configured to perform quality of service (QoS) scheduling on a per-data unit basis, and to route the traffic to an asynchronous transfer mode (ATM) scheduler, connected in series to the first scheduler, and configured to schedule and shape the routed traffic. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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2-39. -39. (canceled)
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52. A method for transmitting traffic by a network device, in a network, the method comprising:
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receiving traffic at a first scheduler of the network device, the first scheduler being configured to operate in one of multiple user configurable modes; receiving, via the network device, a selection of a user configurable mode from the multiple user configurable modes; scheduling, using the first scheduler, the traffic based on the selected user configurable mode; routing, using the first scheduler, the traffic to a Segmentation and Reassembly (SAR) scheduler of the network device; scheduling, using the SAR scheduler, the traffic based on the selected user configurable mode; and transmitting the traffic by an output port of the network device. - View Dependent Claims (53, 54, 55, 56, 57)
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58. In a network device, a line card to schedule traffic, including data units of a first type, the line card comprising:
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a first scheduler to perform quality of service (QoS) scheduling of the data units of the first type and to route all of the traffic, based on the QoS scheduling, to a second scheduler, connected in series to the first scheduler, to schedule the routed traffic, where the first scheduler and the second scheduler are configured to operate in one of three user selectable modes, selected from; a first user selectable mode, in which the second scheduler is dominant over the first scheduler, a second user selectable mode, in which the first scheduler is dominant over the second scheduler, and a third user selectable mode, in which neither the first scheduler or the second scheduler is dominant.
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Specification